Endangered Languages Catalogue
The data were downloaded from the ELCat website on 2020-07-16.
| ID | Name | Genus | Family | Pop | Status | Level | Regions |
|---|---|---|---|---|---|---|---|
| 1763 | Abinomn | Isolate | Pacific | 50 | Critically Endangered | 7 | Southeast Asia |
| 3847 | Abom | Trans-New Guinea | Tirio | 15 | Critically Endangered | 7 | Pacific |
| 10638 | Abu | Lower Sepik-Ramu | Ramu | 2347 | Threatened | 4 | Pacific |
| 10569 | Abu' | Torricelli | Arapeshan | 2560 | Threatened | 4 | Pacific |
| 1381 | Abui | Timor-Alor-Pantar | 16000 | Threatened | 4 | Southeast Asia | |
| 10730 | Abun | Isolate | Pacific | 3000 | Threatened | 4 | Southeast Asia |
| 641 | Achagua | Arawakan | Northern Arawakan | 283 | Endangered | 5 | South America |
| 1520 | Aché | Tupian | Tupi-Guaranian | 200 | Severely Endangered | 6 | South America |
| 3591 | Acheron | Niger-Congo | Talodi | 70000 | Vulnerable | 3 | Africa |
| 647 | Achi' | Mayan | K'ichean | 51593 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 8122 | Chachapoyas Quechua | Quechuan | Quechua IIB | 7000 | Threatened | 4 | South America |
| 3645 | !Xun | Kx'a | 16000 | Vulnerable | 3 | Africa | |
| 3956 | 'Ôrôê | Austronesian | Malayo-Polynesian | 590 | Endangered | 5 | Pacific |
| 1933 | (Lower) Tanana | Athabaskan-Eyak-Tlingit | Dene (Athabaskan) | 25 | Critically Endangered | 7 | North America |
| 3581 | Aasáx | Afro-Asiatic | Cushitic | 0 | Dormant | 9 | Africa |
| 2011 | Abaga | Trans-New Guinea | Kainantu-Goroka | 5 | Critically Endangered | 7 | Pacific |
| 3584 | Abai Sungai | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Southeast Asia |
| 10590 | Abau | Sepik | 7000 | Threatened | 4 | Pacific | |
| 1415 | Abaza | Northwest Caucasian | Abkhaz-Abaza | 47880 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 9669 | Abellen Ayta | Austronesian | Malayo-Polynesian | 3500 | Threatened | 4 | Southeast Asia |
| 648 | Achuar | Chicham family (Jivaroan) | 5443 | Threatened | 4 | South America | |
| 1004 | Achumawi | Palaihnihan | 10 | Critically Endangered | 7 | North America | |
| 650 | Acoma-Laguna | Keresan | 4000 | Threatened | 4 | North America | |
| 6909 | Adamorobe Sign Language | Sign Language | African | 35 | Threatened | 4 | Africa |
| 9470 | Adang | Timor-Alor-Pantar | Alor | 7000 | Endangered | 5 | Southeast Asia |
| 2827 | Adasen Itneg | Austronesian | Malayo-Polynesian | 4000 | Threatened | 4 | Southeast Asia |
| 1130 | Adi | Sino-Tibetan | Tani | 100190 | At risk | 2 | South Asia; East Asia |
| 10754 | Adithinngithigh | Pama-Nyungan | Paman | Dormant | 9 | Australia | |
| 3593 | Adnyamathanha | Pama-Nyungan | Thura-Yura | 100 | Endangered | 5 | Australia |
| 581 | Adzera | Austronesian | Malayo-Polynesian | 28900 | Vulnerable | 3 | Pacific |
| 3596 | Aer | Indo-European | Indo-Iranian | 200 | Endangered | 5 | South Asia |
| 3600 | Afitti | Nyimang | 4000 | Endangered | 5 | Africa | |
| 2799 | Afra | Isolate | Pacific | 115 | Threatened | 4 | Southeast Asia |
| 10069 | Aftari | Indo-European | Indo-Iranian | 500 | Endangered | 5 | Near East |
| 3879 | Agavotaguerra | Arawakan | Southern Arawakan | 0 | Dormant | 9 | South America |
| 6661 | Aghu-Tharnggala | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 921 | Aghul | Northeast Caucasian | Daghestanian | 18000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 10554 | Agi | Torricelli | Palei | 670 | Endangered | 5 | Pacific |
| 1565 | Aguaruna | Chicham family (Jivaroan) | 55000 | Vulnerable | 3 | South America | |
| 3806 | Aguna | Niger-Congo | Atlantic-Congo | 3470 | Threatened | 4 | Africa |
| 3334 | Agwamin | Pama-Nyungan | Paman | 1 | Critically Endangered | 7 | Australia |
| 3690 | Àhàn | Niger-Congo | Atlantic-Congo | 300 | Endangered | 5 | Africa |
| 761 | Ahtna | Athabaskan-Eyak-Tlingit | Athabaskan | 30 | Critically Endangered | 7 | North America |
| 9329 | Aširat Northeastern Neo-Aramaic | Afro-Asiatic | Semitic | Endangered | 5 | Europe; Near East | |
| 5191 | Assangori | Taman | 23500 | Vulnerable | 3 | Africa | |
| 677 | Assiniboine | Siouan | Mississippi Valley Siouan | 150 | Endangered | 5 | North America |
| 966 | Asturian | Indo-European | Italic | 110000 | At risk | 2 | Europe |
| 3871 | Asumboa | Austronesian | Malayo-Polynesian | 10 | Severely Endangered | 6 | Pacific |
| 3129 | Asunción Mixtepec Zapotec | Otomanguean | Zapotecan | 100 | Severely Endangered | 6 | Mexico, Central America, Caribbean |
| 1579 | Asuri | Austro-Asiatic | Munda | 7000 | Threatened | 4 | South Asia |
| 1720 | Asuriní do Tocantins | Tupian | Tupi-Guaranian | 384 | Endangered | 5 | South America |
| 678 | Asuriní of Xingú | Tupian | Tupi-Guaranian | 125 | Endangered | 5 | South America |
| 543 | Bishuo | Niger-Congo | Atlantic-Congo | 1 | Critically Endangered | 7 | Africa |
| 10619 | Bisis | Sepik | Sepik Hill | 395 | Endangered | 5 | Pacific |
| 10628 | Bisorio | Trans-New Guinea | Engan | 200 | Endangered | 5 | Pacific |
| 4023 | Bisu | Sino-Tibetan | Lolo-Burmese | 2740 | Threatened | 4 | Southeast Asia; East Asia |
| 1239 | Bit | Austro-Asiatic | Palaungic | 1000 | Severely Endangered | 6 | Southeast Asia; East Asia |
| 10632 | Biwat | Yuat | 1642 | Threatened | 4 | Pacific | |
| 1454 | Blablanga | Austronesian | Malayo-Polynesian | 2000 | Threatened | 4 | Pacific |
| 1677 | Blackfoot | Algic | Algonquian | 3300 | Endangered | 5 | North America |
| 9469 | Blagar | Timor-Alor-Pantar | Alor | 10000 | Threatened | 4 | Southeast Asia |
| 3962 | Bo | Left May | 76 | Severely Endangered | 6 | Pacific | |
| 1920 | Omaha-Ponca | Siouan | Mississippi Valley Siouan | 85 | Severely Endangered | 6 | North America |
| 4921 | Omotik | Nilotic | Southern Nilotic | 50 | Severely Endangered | 6 | Africa |
| 2742 | Ona | Chonan | Island Chonan | Dormant | 9 | South America | |
| 10539 | One | Torricelli | One | 4450 | Threatened | 4 | Pacific |
| 1921 | Oneida | Iroquoian | Northern Iroquoian | 212 | Endangered | 5 | North America |
| 4925 | Önge | South Andamanese | 94 | Threatened | 4 | South Asia | |
| 8571 | Ongkor Solon | Tungusic | Northern Tungusic | 1 | Critically Endangered | 7 | Near East; East Asia |
| 4002 | Ongota | Unclassified | Afro-Asiatic? | 8 | Critically Endangered | 7 | Africa |
| 2739 | Onin | Austronesian | Malayo-Polynesian | 600 | Endangered | 5 | Southeast Asia |
| 2373 | Onjob | Trans-New Guinea | Dagan | 150 | Endangered | 5 | Pacific |
| 1922 | Onondaga | Iroquoian | Northern Iroquoian | 52 | Critically Endangered | 7 | North America |
| 4927 | Opata-Eudeve | Uto-Aztecan | Southern Uto-Aztecan | 0 | Dormant | 9 | Mexico, Central America, Caribbean |
| 2681 | Opuuo | Koman | 301 | Endangered | 5 | Africa | |
| 4928 | Orang Kanaq | Austronesian | Malayo-Polynesian | 87 | Severely Endangered | 6 | Southeast Asia |
| 4929 | Orang Seletar | Austronesian | Malayo-Polynesian | 880 | Endangered | 5 | Southeast Asia |
| 10470 | Ordos | Mongolic | Common Mongolic | 100000 | Vulnerable | 3 | East Asia |
| 1064 | Orejón | Tucanoan | Western Tucanoan | 95 | Critically Endangered | 7 | South America |
| 7187 | Original Bangkok Sign Language | Sign Language | Southeast Asian | 495 | Critically Endangered | 7 | Southeast Asia |
| 9029 | Original Chiangmai Sign Language | Sign Language | Southeast Asian | 19 | Critically Endangered | 7 | Southeast Asia |
| 2154 | Terena | Arawakan | Southern Arawakan | 8439 | Vulnerable | 3 | South America |
| 5098 | Teressa | Austro-Asiatic | Nicobarese | 2080 | Threatened | 4 | South Asia |
| 5092 | Teribe | Chibchan | Isthmic | 3000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 10787 | Ternate | North Halmaheran | 42000 | Threatened | 4 | Southeast Asia | |
| 4364 | Tese | Temein | 1400 | Threatened | 4 | Africa | |
| 10875 | Test Language | 1000000 | Safe | 1 | |||
| 2151 | Teteté | Tucanoan | Western Tucanoan | 0 | Dormant | 9 | South America |
| 8509 | Tetserret | Afro-Asiatic | Berber | 2000 | Severely Endangered | 6 | Africa |
| 2150 | Teushen | Chonan | Continental Chonan | 0 | Dormant | 9 | South America |
| 5881 | Tewa | Kiowa-Tanoan | Tanoan | 1500 | Endangered | 5 | North America |
| 5285 | Texistepec | Mixe-Zoquean | Zoquean | 1 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 10536 | Tezoatlan Mixtec | Otomanguean | Mixtecan | 5540 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3371 | Vinmavis | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Pacific |
| 5073 | Vinza | Niger-Congo | Atlantic-Congo | 10000 | Vulnerable | 3 | Africa |
| 3397 | Vishavan | Dravidian | South-Central Dravidian | 150 | Endangered | 5 | South Asia |
| 945 | Vivaro-Alpine | Indo-European | Italic | 200000 | Endangered | 5 | Europe |
| 10794 | Vivti | Austronesian | Malayo-Polynesian | 5 | Critically Endangered | 7 | Pacific |
| 5346 | Vlax Romani | Indo-European | Indo-Iranian | 885970 | At risk | 2 | Europe; Caucasus; East Asia |
| 10765 | Volow | Austronesian | Malayo-Polynesian | 1 | Critically Endangered | 7 | Pacific |
| 2998 | Võro | Uralic | Finnic | 50000 | Vulnerable | 3 | Europe |
| 2993 | Votic | Uralic | Finnic | 10 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 10797 | Vovo | Austronesian | Malayo-Polynesian | 475 | Endangered | 5 | Pacific |
| 669 | Aikanã | Isolate | South American | 188 | Vulnerable | 3 | South America |
| 10552 | Aiku | Torricelli | Palei | 819 | Endangered | 5 | Pacific |
| 3699 | Aimele | Trans-New Guinea | Awyu | 140 | Endangered | 5 | Pacific |
| 3700 | Aimol | Sino-Tibetan | Kukish | 2640 | Endangered | 5 | South Asia |
| 3692 | Ainbai | Border | Bewani | 110 | Endangered | 5 | Pacific |
| 3691 | Ainu (China) | Turkic | Central Asian Turkic | 12000 | Threatened | 4 | East Asia |
| 1212 | Ainu (Japan) | Isolate | 2 | Critically Endangered | 7 | East Asia | |
| 10644 | Aiome | Lower Sepik-Ramu | Ramu | 620 | Endangered | 5 | Pacific |
| 10330 | Aisi | Trans-New Guinea | Madang | 250 | Endangered | 5 | Pacific |
| 1426 | Aiton | Tai-Kadai | Kam-Tai | 1000 | Threatened | 4 | South Asia |
| 10349 | Äiwoo | Austronesian | Malayo-Polynesian | 7926 | Vulnerable | 3 | Pacific |
| 3703 | Aja | Kresh-Aja | 200 | Endangered | 5 | Africa | |
| 8889 | Ajumbu | Niger-Congo | Atlantic-Congo | 250 | Endangered | 5 | Africa |
| 1269 | Ak | Sepik | Yellow River | 80 | Severely Endangered | 6 | Pacific |
| 5054 | Aka | Eastern Jebel | Endangered | 5 | Africa | ||
| 10715 | Aka-Bo | Great Andamanese | Dormant | 9 | South Asia | ||
| 10716 | Aka-Kora | Great Andamanese | Dormant | 9 | South Asia | ||
| 651 | Akateko | Mayan | Q'anjob'alan-Chujean | 5572 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3698 | Ake | Niger-Congo | Atlantic-Congo | 2000 | Vulnerable | 3 | Africa |
| 3597 | Akeu | Sino-Tibetan | Lolo-Burmese | 5000 | Threatened | 4 | Southeast Asia; East Asia |
| 941 | Akhvakh | Northeast Caucasian | Daghestanian | 5000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 942 | Akkala Saami | Uralic | Saami | 1 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 4663 | Akoye | Trans-New Guinea | Angan | 800 | Endangered | 5 | Pacific |
| 537 | Akum | Niger-Congo | Atlantic-Congo | 600 | Endangered | 5 | Africa |
| 1567 | Akuntsú | Tupian | Tuparian | 3 | Critically Endangered | 7 | South America |
| 1568 | Akuriyo | Cariban | Guianan | 0 | Dormant | 9 | South America |
| 6998 | Al-Sayyid Bedouin Sign Language | Sign Language | Near Eastern | 150 | Endangered | 5 | Near East |
| 670 | Alabama | Muskogean | 275 | Endangered | 5 | North America | |
| 2828 | Alabat Island Agta | Austronesian | Malayo-Polynesian | 50 | Critically Endangered | 7 | Southeast Asia |
| 943 | Alabugat Tatar | Turkic | Kipchak | 400 | Threatened | 4 | Caucasus; Europe; East Asia |
| 8195 | Alago | Niger-Congo | Atlantic-Congo | 15000 | Vulnerable | 3 | Africa |
| 5988 | Alagwa | Afro-Asiatic | Cushitic | 10000 | Threatened | 4 | Africa |
| 10616 | Alamblak | Sepik | Sepik Hill | 1200 | Threatened | 4 | Pacific |
| 3832 | Alawa | Gunwinyguan | Maran | 17 | Critically Endangered | 7 | Australia |
| 8792 | Albarradas Zapotec | Otomanguean | Zapotecan | 5500 | Threatened | 4 | Mexico, Central America, Caribbean |
| 4184 | Alekano | Trans-New Guinea | Kainantu-Goroka | 25000 | Vulnerable | 3 | Pacific |
| 671 | Aleut | Eskimo-Aleut | Aleut | 85 | Endangered | 5 | Caucasus; Europe; North America; East Asia |
| 10642 | Alfendio | Arafundi | 633 | Endangered | 5 | Pacific | |
| 944 | Algherese Catalan | Indo-European | Italic | 25000 | Vulnerable | 3 | Europe |
| 7175 | Alipur Sign Language | Sign Language | South Asian | Threatened | 4 | South Asia | |
| 3833 | Allar | Dravidian | South-Central Dravidian | 350 | Endangered | 5 | South Asia |
| 3693 | Alngith | Pama-Nyungan | Paman | 3 | Critically Endangered | 7 | Australia |
| 10856 | Alto Huallaga Quechua | Quechuan | Quechua I | South America | |||
| 8114 | Alto Marañón Quechua | Quechuan | Quechua I | 83400 | Vulnerable | 3 | South America |
| 10547 | Alu | Torricelli | Wapei | 1880 | Threatened | 4 | Pacific |
| 3567 | Alu Kurumba | Dravidian | South Dravidian | 1000 | Threatened | 4 | South Asia |
| 1329 | Alune | Austronesian | Malayo-Polynesian | 17200 | Vulnerable | 3 | Southeast Asia |
| 7249 | Aluo | Sino-Tibetan | Lolo-Burmese | 40000 | Endangered | 5 | East Asia |
| 672 | Alutiiq | Eskimo-Aleut | Eskimo | 200 | Severely Endangered | 6 | North America |
| 947 | Alutor | Chukotko-Kamchatkan | Chukotkan | 2000 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 3878 | Alviri-Vidari | Indo-European | Indo-Iranian | Severely Endangered | 6 | Near East | |
| 5249 | Alyawarr | Pama-Nyungan | Arandic | 1664 | Vulnerable | 3 | Australia |
| 10662 | Ama | Left May | 450 | Vulnerable | 3 | Pacific | |
| 1330 | Amahai | Austronesian | Malayo-Polynesian | 50 | Critically Endangered | 7 | Southeast Asia |
| 674 | Amahuaca | Pano-Tacanan | Mainline | 100 | Severely Endangered | 6 | South America |
| 10582 | Amal | Sepik | 388 | Endangered | 5 | Pacific | |
| 10377 | Amami-North Okinawan | Japonic | Ryukyuan | 100000 | Endangered | 5 | East Asia |
| 10670 | Amanab | Border | Waris | 3500 | Threatened | 4 | Southeast Asia; Pacific |
| 3836 | Amanayé | Tupian | Tupi-Guaranian | 0 | Dormant | 9 | South America |
| 3694 | Amara | Austronesian | Malayo-Polynesian | 231 | Endangered | 5 | Pacific |
| 9171 | Amarasi | Austronesian | Malayo-Polynesian | 70000 | Vulnerable | 3 | Southeast Asia |
| 10639 | Ambakich | Lower Sepik-Ramu | Ramu | 770 | Endangered | 5 | Pacific |
| 6310 | Ambele | Niger-Congo | Atlantic-Congo | 3600 | Vulnerable | 3 | Africa |
| 10606 | Ambulas | Sepik | Ndu | 33000 | Vulnerable | 3 | Pacific |
| 4589 | Amdang | Furan | Threatened | 4 | Africa | ||
| 8740 | Ampari | Niger-Congo | Dogon | 5200 | Threatened | 4 | Africa |
| 1333 | Ampibabo | Austronesian | Malayo-Polynesian | 6000 | Threatened | 4 | Southeast Asia |
| 2012 | Amto | Amto-Musan | 230 | Endangered | 5 | Pacific | |
| 1646 | Amuesha | Arawakan | Southern Arawakan | 8000 | Threatened | 4 | South America |
| 8556 | Amur Nivkh | Nivkh | 500 | Severely Endangered | 6 | Caucasus; Europe; East Asia | |
| 1382 | Amurdak | Iwaidjan | 4 | Critically Endangered | 7 | Australia | |
| 8598 | Anaang | Niger-Congo | Atlantic-Congo | 733040 | Vulnerable | 3 | Africa |
| 9909 | Anakalangu | Austronesian | Malayo-Polynesian | 25000 | Vulnerable | 3 | Southeast Asia |
| 675 | Anal | Sino-Tibetan | Kukish | Endangered | 5 | South Asia; Southeast Asia | |
| 4954 | Anam | Trans-New Guinea | Madang | 1070 | Threatened | 4 | Pacific |
| 1570 | Anambé of Cairarí | Tupian | Tupi-Guaranian | 0 | Dormant | 9 | South America |
| 5448 | Andajin | Worrorran | Southern Worrorran | 2 | Critically Endangered | 7 | Australia |
| 10656 | Andarum | Lower Sepik-Ramu | Ramu | 830 | Endangered | 5 | Pacific |
| 10777 | Ande | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Pacific |
| 948 | Andi | Northeast Caucasian | Daghestanian | 15000 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 1334 | Andio | Austronesian | Malayo-Polynesian | 1700 | Threatened | 4 | Southeast Asia |
| 1571 | Andoa | Zaparoan | 0 | Dormant | 9 | South America | |
| 676 | Andoque | Isolate | South American | 597 | Endangered | 5 | South America |
| 10821 | Anejom̃ | Austronesian | Malayo-Polynesian | 900 | Endangered | 5 | Pacific |
| 10806 | Anem | Isolate | Pacific | 843 | Endangered | 5 | Pacific |
| 2675 | Anfillo | Afro-Asiatic | Omotic | 500 | Endangered | 5 | Africa |
| 1572 | Angaité | Enlhet-Enenlhet (Mascoyan) | 780 | Severely Endangered | 6 | South America | |
| 10673 | Angor | Senagi | 1250 | Threatened | 4 | Pacific | |
| 10629 | Angoram | Lower Sepik-Ramu | Lower Sepik | 6514 | Threatened | 4 | Pacific |
| 3809 | Anii | Niger-Congo | Atlantic-Congo | 25000 | Vulnerable | 3 | Africa |
| 3305 | Animere | Niger-Congo | Atlantic-Congo | 30 | Severely Endangered | 6 | Africa |
| 2025 | Anindilyakwa | Gunwinyguan | East Arnhem | 1500 | Threatened | 4 | Australia |
| 3840 | Anmatyerre | Pama-Nyungan | Arandic | 750 | Threatened | 4 | Australia |
| 4904 | Anong | Sino-Tibetan | Nungish | 4040 | Critically Endangered | 7 | Southeast Asia; East Asia |
| 10643 | Anor | Lower Sepik-Ramu | Ramu | 450 | Endangered | 5 | Pacific |
| 3110 | Antakirinya | Pama-Nyungan | Wati | 50 | Severely Endangered | 6 | Australia |
| 3592 | Antekerrepenh | Pama-Nyungan | Arandic | Critically Endangered | 7 | Australia | |
| 2013 | Anuki | Austronesian | Malayo-Polynesian | 574 | Threatened | 4 | Pacific |
| 1335 | Anus | Austronesian | Malayo-Polynesian | 320 | Endangered | 5 | Southeast Asia |
| 3872 | Anuta | Austronesian | Malayo-Polynesian | 340 | Endangered | 5 | Pacific |
| 3851 | Aore | Austronesian | Malayo-Polynesian | 0 | Dormant | 9 | Pacific |
| 10637 | Ap Ma | Isolate | 6500 | Threatened | 4 | Pacific | |
| 655 | Apalaí | Cariban | 317 | Endangered | 5 | South America | |
| 657 | Apatani | Sino-Tibetan | Tani | 14000 | Vulnerable | 3 | South Asia |
| 656 | Apiaká | Tupian | Tupi-Guaranian | 0 | Dormant | 9 | South America |
| 658 | Apinayé | Jean | Northern Je | 1500 | Threatened | 4 | South America |
| 3202 | Apuriná | Arawakan | Southern Arawakan | 400 | Endangered | 5 | South America |
| 1347 | Aputai | Austronesian | Malayo-Polynesian | 150 | Endangered | 5 | Southeast Asia |
| 3857 | Arabana-Wangkangurru | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 660 | Arabela | Zaparoan | 30 | Critically Endangered | 7 | South America | |
| 949 | Aragonese | Indo-European | Italic | 10000 | Endangered | 5 | Europe |
| 3829 | Araki | Austronesian | Malayo-Polynesian | 15 | Critically Endangered | 7 | Pacific |
| 3578 | Aranadan | Dravidian | South Dravidian | 200 | Endangered | 5 | South Asia |
| 3858 | Araona | Pano-Tacanan | Takana | 111 | Endangered | 5 | South America |
| 661 | Arapaho | Algic | Algonquian | 1000 | Severely Endangered | 6 | North America |
| 1705 | Arapaso | Tucanoan | Eastern Tucanoan | 0 | Dormant | 9 | South America |
| 3032 | Arára of Mato Grosso | Isolate | South American | 0 | Dormant | 9 | South America |
| 663 | Araweté | Tupian | Tupi-Guaranian | 339 | Endangered | 5 | South America |
| 2047 | Arawum | Trans-New Guinea | Madang | 60 | Severely Endangered | 6 | Pacific |
| 962 | Arbëreshë | Indo-European | Albanian | 100000 | Vulnerable | 3 | Europe |
| 3859 | Arbore | Afro-Asiatic | Cushitic | 4441 | Threatened | 4 | Africa |
| 721 | Archi | Northeast Caucasian | Daghestanian | 1237 | Threatened | 4 | Caucasus; Europe; East Asia |
| 1219 | Arem | Austro-Asiatic | Vietic | 100 | Critically Endangered | 7 | Southeast Asia |
| 7001 | Argentine Sign Language | Sign Language | South American | South America | |||
| 3685 | Argobba | Afro-Asiatic | Semitic | 10860 | Vulnerable | 3 | Africa |
| 1349 | Arguni | Austronesian | Malayo-Polynesian | 150 | Endangered | 5 | Southeast Asia |
| 3856 | Arhâ | Austronesian | Malayo-Polynesian | 35 | Severely Endangered | 6 | Pacific |
| 3849 | Arhö | Austronesian | Malayo-Polynesian | 62 | Severely Endangered | 6 | Pacific |
| 2887 | Ari | Trans-New Guinea | Gogodalic | 50 | Severely Endangered | 6 | Pacific |
| 3594 | Ariba | Pama-Nyungan | Paman | 2 | Critically Endangered | 7 | Australia |
| 3579 | Arifama-Miniafia | Austronesian | Malayo-Polynesian | 3470 | Threatened | 4 | Pacific |
| 664 | Arikapú | Jabutian | 1 | Critically Endangered | 7 | South America | |
| 1672 | Arikara | Caddoan | 10 | Critically Endangered | 7 | North America | |
| 963 | Aromanian | Indo-European | Italic | 350000 | Threatened | 4 | Europe |
| 2834 | Arta | Austronesian | Malayo-Polynesian | 11 | Critically Endangered | 7 | Southeast Asia |
| 3835 | Aru | Torricelli | Palei | 270 | Endangered | 5 | Pacific |
| 665 | Aruá | Tupian | Mondean | 5 | Critically Endangered | 7 | South America |
| 10650 | Aruamu | Lower Sepik-Ramu | Ramu | 5350 | Threatened | 4 | Pacific |
| 10566 | Aruek | Torricelli | Kombian | 614 | Endangered | 5 | Pacific |
| 10551 | Aruop | Torricelli | Palei | 700 | Endangered | 5 | Pacific |
| 667 | Arutani | Isolate | South American | 1 | Critically Endangered | 7 | South America |
| 3582 | Arvanitika | Indo-European | Albanian | 50000 | Vulnerable | 3 | Europe |
| 1350 | As | Austronesian | Malayo-Polynesian | 230 | Endangered | 5 | Southeast Asia |
| 2687 | Asaba | Isolate | 145 | Threatened | 4 | Pacific | |
| 1718 | Asháninka | Arawakan | Southern Arawakan | 89516 | Vulnerable | 3 | South America |
| 1308 | Ashéninka | Arawakan | Southern Arawakan | 20000 | Vulnerable | 3 | South America |
| 1577 | Ashing | Sino-Tibetan | Tani | 1000 | Endangered | 5 | South Asia |
| 1578 | Ashkun | Indo-European | Indo-Iranian | 7000 | Threatened | 4 | Near East |
| 3866 | Ashtiani | Indo-European | Indo-Iranian | 21100 | Vulnerable | 3 | Near East |
| 3865 | Ata | Austronesian | Malayo-Polynesian | 4 | Critically Endangered | 7 | Southeast Asia |
| 3842 | Atampaya | Pama-Nyungan | Paman | 4 | Critically Endangered | 7 | Australia |
| 3852 | Athpariya | Sino-Tibetan | Kiranti | 3658 | Threatened | 4 | South Asia |
| 10692 | Bimin | Trans-New Guinea | Ok | 2000 | Vulnerable | 3 | Pacific |
| 5008 | Bina | Niger-Congo | Atlantic-Congo | 7000 | Threatened | 4 | Africa |
| 5554 | Binbinka | Mirndi | 2 | Critically Endangered | 7 | Australia | |
| 5445 | Bininj Gun-wok | Gunwinyguan | Gunwinggic | 1600 | Threatened | 4 | Australia |
| 9749 | Bintulu | Austronesian | Malayo-Polynesian | Vulnerable | 3 | Southeast Asia | |
| 1602 | Birhor | Austro-Asiatic | Munda | 2000 | Threatened | 4 | South Asia |
| 6657 | Biri | Pama-Nyungan | Maric | Awakening | 8 | Australia | |
| 3965 | Biritai | Lakes Plain | 250 | Endangered | 5 | Southeast Asia | |
| 560 | Birri | Unclassified | Central Sudanic? | 200 | Endangered | 5 | Africa |
| 3812 | Birwa | Niger-Congo | Atlantic-Congo | Vulnerable | 3 | Africa | |
| 7935 | Biseni | Niger-Congo | Ijoid | 4800 | Threatened | 4 | Africa |
| 1246 | Bishnupuriya | Indo-European | Indo-Iranian | Vulnerable | 3 | South Asia; Southeast Asia | |
| 4026 | Boano (Maluku, Indonesia) | Austronesian | Malayo-Polynesian | 3240 | Threatened | 4 | Southeast Asia |
| 1365 | Boano (Sulawesi, Indonesia) | Austronesian | Malayo-Polynesian | 2350 | Threatened | 4 | Southeast Asia |
| 5991 | Bobongko | Austronesian | Malayo-Polynesian | 1500 | Threatened | 4 | Southeast Asia |
| 3069 | Bocotá | Chibchan | Isthmic | 3251 | Threatened | 4 | Mexico, Central America, Caribbean |
| 5929 | Bodi | Surmic | Southeast Surmic | 4570 | Threatened | 4 | Africa |
| 561 | Bodo | Niger-Congo | Atlantic-Congo | 15 | Severely Endangered | 6 | Africa |
| 10743 | Bogaya | Isolate | Pacific | 300 | Endangered | 5 | Pacific |
| 585 | Boguru | Niger-Congo | Atlantic-Congo | 500 | Endangered | 5 | Africa |
| 3912 | Bohtan Neo-Aramaic | Afro-Asiatic | Semitic | 500 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 10607 | Boiken | Sepik | Ndu | 35204 | Vulnerable | 3 | Pacific |
| 1604 | Bokar | Sino-Tibetan | Tani | 3500 | Threatened | 4 | South Asia; East Asia |
| 3945 | Bola | Austronesian | Malayo-Polynesian | 13700 | Vulnerable | 3 | Pacific |
| 8127 | Bolivian Quechua | Quechuan | Quechua IIC | 2300000 | At risk | 2 | South America |
| 7002 | Bolivian Sign Language | Sign Language | South American | Threatened | 4 | South America | |
| 2205 | Bolo | Niger-Congo | Atlantic-Congo | 2630 | Threatened | 4 | Africa |
| 3931 | Boloki | Niger-Congo | Atlantic-Congo | 4200 | Threatened | 4 | Africa |
| 5935 | Garig | Iwaidjan | 4 | Critically Endangered | 7 | Australia | |
| 4773 | Garlali | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 10840 | Garma'i | Indo-European | Indo-Iranian | 10 | Severely Endangered | 6 | Near East |
| 5633 | Garo | Sino-Tibetan | Brahmaputran | 700000 | Vulnerable | 3 | South Asia |
| 5051 | Garre | Afro-Asiatic | Cushitic | 57500 | Vulnerable | 3 | Africa |
| 4190 | Garrwa | Garrwan | 59 | Severely Endangered | 6 | Australia | |
| 8631 | Gascon | Indo-European | Italic | 250000 | At risk | 2 | Europe |
| 4358 | Gats'amé | Afro-Asiatic | Omotic | 1000 | Threatened | 4 | Africa |
| 2668 | Gavião | Tupian | Mondean | 523 | Endangered | 5 | South America |
| 2669 | Gavião de Parã | Jean | Northern Je | 476 | Endangered | 5 | South America |
| 6106 | Hwela | Niger-Congo | Mande | 1500 | Threatened | 4 | Africa |
| 10584 | I'saka | Sko | 347 | Severely Endangered | 6 | Pacific | |
| 10608 | Iatmul | Sepik | Ndu | 46000 | Threatened | 4 | Pacific |
| 7929 | Ibani | Niger-Congo | Ijoid | 60000 | Vulnerable | 3 | Africa |
| 8596 | Ibino | Niger-Congo | Atlantic-Congo | 10000 | Threatened | 4 | Africa |
| 1789 | Ibu | North Halmahera | 35 | Severely Endangered | 6 | Southeast Asia | |
| 8592 | Ibuoro | Niger-Congo | Atlantic-Congo | 10000 | Threatened | 4 | Africa |
| 666 | Ica | Chibchan | Magdalenic | 14799 | Vulnerable | 3 | South America |
| 5015 | Idon | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 4179 | Idu-Mishmi | Sino-Tibetan | Digarish | 11080 | Vulnerable | 3 | South Asia; East Asia |
| 5937 | Iduh | Austro-Asiatic | Khmuic | 30 | Severely Endangered | 6 | Southeast Asia |
| 4295 | Igana | Lower Sepik-Ramu | Ramu | 114 | Endangered | 5 | Pacific |
| 2910 | Ignaciano | Arawakan | Southern Arawakan | 1080 | Threatened | 4 | South America |
| 5079 | Igo | Niger-Congo | Atlantic-Congo | 6000 | Threatened | 4 | Africa |
| 4297 | Iha Based Pidgin | Pidgin or Creole | Iha based | Southeast Asia | |||
| 4298 | Ik | Kuliak | 16000 | Vulnerable | 3 | Africa | |
| 10759 | Ikaranggal | Pama-Nyungan | Paman | Dormant | 9 | Australia | |
| 5066 | Ikizu | Niger-Congo | Atlantic-Congo | 132000 | At risk | 2 | Africa |
| 5067 | Ikoma | Niger-Congo | Atlantic-Congo | 36000 | Vulnerable | 3 | Africa |
| 8194 | Ikorom | Niger-Congo | Atlantic-Congo | 6500 | Threatened | 4 | Africa |
| 3864 | Ati (Philippines) | Austronesian | Malayo-Polynesian | 1500 | Threatened | 4 | Southeast Asia |
| 10782 | Ati (Vanuatu) | Austronesian | Malayo-Polynesian | 85 | Severely Endangered | 6 | Pacific |
| 10781 | Atin | Austronesian | Malayo-Polynesian | 120 | Endangered | 5 | Pacific |
| 1581 | Atong (Cameroon) | Niger-Congo | Atlantic-Congo | 4200 | Vulnerable | 3 | Africa |
| 1582 | Atong (India) | Sino-Tibetan | Brahmaputran | Threatened | 4 | South Asia | |
| 679 | Atsugewi | Palaihnihan | 0 | Dormant | 9 | North America | |
| 1673 | Attikamek | Algic | Algonquian | 3000 | Vulnerable | 3 | North America |
| 10544 | Au | Torricelli | Wapei | 4200 | Threatened | 4 | Pacific |
| 10749 | Aulua | Austronesian | Malayo-Polynesian | 750 | Endangered | 5 | Pacific |
| 3876 | Auré | Tupian | Tupi-Guaranian | 0 | Dormant | 9 | South America |
| 2448 | Austral | Austronesian | Malayo-Polynesian | 8000 | Threatened | 4 | Pacific |
| 2066 | Australian Sign Language | Sign Language | Australian | 6500 | Threatened | 4 | Australia |
| 8630 | Auvergnat | Indo-European | Italic | 150000 | Threatened | 4 | Europe |
| 10669 | Auwe | Border | Waris | 270 | Endangered | 5 | Pacific |
| 1351 | Auye | Trans-New Guinea | Paniai Lakes | 350 | Endangered | 5 | Southeast Asia |
| 681 | Avá | Tupian | Tupi-Guaranian | 16 | Severely Endangered | 6 | South America |
| 10209 | Avava | Austronesian | Malayo-Polynesian | 700 | Vulnerable | 3 | Pacific |
| 4084 | Aveteian | Austronesian | Malayo-Polynesian | 50 | Severely Endangered | 6 | Pacific |
| 10790 | Avok | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Pacific |
| 523 | Awa Pit | Barbacoan | Northern Barbacoan | 17464 | Vulnerable | 3 | South America |
| 6631 | Awabakal | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 682 | Awakateko | Mayan | Mamean | 16272 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 10648 | Awar | Lower Sepik-Ramu | Ramu | 1153 | Severely Endangered | 6 | Pacific |
| 3880 | Awbono | Bayono-Awbono | 100 | Vulnerable | 3 | Southeast Asia | |
| 3948 | Aweer | Afro-Asiatic | Cushitic | 200 | Endangered | 5 | Africa |
| 1352 | Awera | Lakes Plain | 100 | Endangered | 5 | Southeast Asia | |
| 684 | Awetí | Tupian | 170 | Endangered | 5 | South America | |
| 2030 | Awiakay | Arafundi | 300 | Threatened | 4 | Pacific | |
| 293 | Awjilah | Afro-Asiatic | Berber | 2000 | Threatened | 4 | Africa |
| 7989 | Awngi | Afro-Asiatic | Cushitic | 500000 | At risk | 2 | Africa |
| 10755 | Awngthim | Pama-Nyungan | Paman | Dormant | 9 | Australia | |
| 10592 | Awtuw | Sepik | Ram | 400 | Endangered | 5 | Pacific |
| 3446 | Awu Laya | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 10601 | Awun | Sepik | Yellow River | 384 | Endangered | 5 | Pacific |
| 1353 | Awyi | Border | Taikat | 400 | Endangered | 5 | Southeast Asia |
| 10816 | Axamb | Austronesian | Malayo-Polynesian | 750 | Endangered | 5 | Pacific |
| 8125 | Ayacucho Quechua | Quechuan | Quechua IIC | 850000 | At risk | 2 | South America |
| 2591 | Ayapanec Zoque | Mixe-Zoquean | Zoquean | 4 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 3883 | Ayapathu | Pama-Nyungan | Paman | 6 | Critically Endangered | 7 | Australia |
| 6770 | Ayerreyenge | Pama-Nyungan | Arandic | 0 | Dormant | 9 | Australia |
| 10698 | Ayi | Sepik | Tama | 430 | Endangered | 5 | Pacific |
| 7250 | Ayizi | Sino-Tibetan | Lolo-Burmese | Critically Endangered | 7 | East Asia | |
| 8111 | Aymara | Aymaran | 1471256 | At risk | 2 | South America | |
| 8790 | Ayoquesco | Otomanguean | Zapotecan | 880 | Endangered | 5 | Mexico, Central America, Caribbean |
| 685 | Ayoreo | Zamucoan | 3154 | Threatened | 4 | South America | |
| 489 | Ayu | Niger-Congo | Atlantic-Congo | Severely Endangered | 6 | Africa | |
| 8030 | Baale | Surmic | Southwest Surmic | 9000 | Threatened | 4 | Africa |
| 5568 | Baan | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 421 | Baba Malay | 2000 | Critically Endangered | 7 | Southeast Asia | ||
| 10836 | Babalia Creole Arabic | Creole | Arabic Based | 3940 | Threatened | 4 | Africa |
| 10899 | Babanki | Niger-Congo | Atlantic-Congo | ||||
| 1081 | Bade | Afro-Asiatic | Chadic | 250000 | At risk | 2 | Africa |
| 4384 | Bädi Kanum | Morehead-Upper Maro | 10 | Severely Endangered | 6 | Southeast Asia | |
| 3913 | Badimaya | Pama-Nyungan | Kartu | 0 | Dormant | 9 | Australia |
| 6349 | Badjiri | Pama-Nyungan | Karnic | 2 | Critically Endangered | 7 | Australia |
| 4949 | Badyara | Niger-Congo | Atlantic-Congo | 12000 | Vulnerable | 3 | Africa |
| 3891 | Baga Binari | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 3905 | Baga Koga | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 3936 | Baga Manduri | Niger-Congo | Atlantic-Congo | 4000 | Threatened | 4 | Africa |
| 3904 | Baga Mboteni | Niger-Congo | Atlantic-Congo | 4900 | Threatened | 4 | Africa |
| 3981 | Baga Sitemu | Niger-Congo | Atlantic-Congo | 4000 | Threatened | 4 | Africa |
| 1584 | Baghati | Indo-European | Indo-Iranian | 4000 | Threatened | 4 | South Asia |
| 5080 | Bago-Kusuntu | Niger-Congo | Atlantic-Congo | 7500 | Threatened | 4 | Africa |
| 2118 | Bagupi | Trans-New Guinea | Madang | 58 | Endangered | 5 | Pacific |
| 1122 | Bagvalal | Northeast Caucasian | Daghestanian | 5000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 1514 | Baha Buyang | Tai-Kadai | Kadai | Severely Endangered | 6 | East Asia | |
| 10620 | Bahinemo | Sepik | Sepik Hill | 700 | Vulnerable | 3 | Pacific |
| 1586 | Bahing | Sino-Tibetan | Kiranti | Critically Endangered | 7 | South Asia | |
| 1354 | Bahonsuai | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Southeast Asia |
| 3896 | Bai | Niger-Congo | Atlantic-Congo | 2500 | Threatened | 4 | Africa |
| 3887 | Baibai | Baibai-Fas | 271 | Endangered | 5 | Pacific | |
| 7229 | Baikeno | Austronesian | Malayo-Polynesian | 20000 | Vulnerable | 3 | Pacific |
| 5614 | Baima | Sino-Tibetan | Tibeto-Kanauri | 10000 | Threatened | 4 | East Asia |
| 1131 | Bainouk-Gunyaamolo | Niger-Congo | Atlantic-Congo | 6000 | Threatened | 4 | Africa |
| 3890 | Bainouk-Samik | Niger-Congo | Atlantic-Congo | 1850 | Threatened | 4 | Africa |
| 1418 | Baïnounk Gubëeher | Niger-Congo | Atlantic-Congo | 1100 | Threatened | 4 | Africa |
| 1419 | Baïnounk Gujaher | Niger-Congo | Atlantic-Congo | Vulnerable | 3 | Africa | |
| 3925 | Bajelani | Indo-European | Indo-Iranian | 20000 | Vulnerable | 3 | Near East |
| 5989 | Baka (East Region, Cameroon) | Niger-Congo | Atlantic-Congo | 40000 | Vulnerable | 3 | Africa |
| 10229 | Baka (Far North Region, Cameroon) | Afro-Asiatic | Chadic | 140 | Severely Endangered | 6 | Africa |
| 1619 | Camling | Sino-Tibetan | Kiranti | 30000 | Vulnerable | 3 | South Asia |
| 1231 | Campidanese Sardinian | Indo-European | Italic | 500000 | Vulnerable | 3 | Europe |
| 1516 | Camsá | Isolate | South American | 4773 | Threatened | 4 | South America |
| 1958 | Candoshi | Isolate | South American | 1586 | Threatened | 4 | South America |
| 3974 | Canela | Jean | Northern Je | 2502 | Threatened | 4 | South America |
| 2913 | Canichana | Isolate | South American | Dormant | 9 | South America | |
| 1232 | Cappadocian Greek | Indo-European | Greek | Endangered | 5 | Europe | |
| 2111 | Caquinte | Arawakan | Southern Arawakan | 500 | Endangered | 5 | South America |
| 4157 | Car Nicobarese | Austro-Asiatic | Nicobarese | 37000 | Vulnerable | 3 | South Asia |
| 483 | Cara | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 2113 | Carabayo | Tikuna-Yurí | South America | ||||
| 3111 | Carapana | Tucanoan | Eastern Tucanoan | 527 | Endangered | 5 | South America |
| 2115 | Carijona | Cariban | Guianan | 10 | Critically Endangered | 7 | South America |
| 4155 | Carolinian | Austronesian | Malayo-Polynesian | 3100 | Threatened | 4 | Pacific |
| 3263 | Carpathian Romani | Indo-European | Indo-Iranian | 472470 | At risk | 2 | Europe; Caucasus; East Asia |
| 2116 | Cashibo | Pano-Tacanan | Mainline | 2191 | Threatened | 4 | South America |
| 1846 | Cashinahua | Pano-Tacanan | Mainline | 5253 | Threatened | 4 | South America |
| 9689 | Casiguran Dumagat Agta | Austronesian | Malayo-Polynesian | 600 | Threatened | 4 | Southeast Asia |
| 7178 | Catalan Sign Language | Sign Language | European | 18000 | Vulnerable | 3 | Europe |
| 10853 | Catamarca and La Rioja Quechua | Quechuan | Quechua IIC | 0 | Dormant | 9 | South America |
| 1681 | Catawba | Siouan | Catawban | Awakening | 8 | North America | |
| 2175 | Cavineña | Pano-Tacanan | Takana | 900 | Endangered | 5 | South America |
| 1682 | Cayuga | Iroquoian | Northern Iroquoian | 100 | Severely Endangered | 6 | North America |
| 2176 | Cayuvava | Isolate | South American | Dormant | 9 | South America | |
| 845 | Central Alaskan Yup'ik | Eskimo-Aleut | Eskimo | 10400 | Threatened | 4 | North America |
| 10527 | Central Baja Mixtec | Otomanguean | Mixtecan | 24130 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 2830 | Central Cagayan Agta | Austronesian | Malayo-Polynesian | 780 | Endangered | 5 | Southeast Asia |
| 9873 | Central Chinantec | Otomanguean | Chinantecan | 34852 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4135 | Eshtehardi | Indo-European | Indo-Iranian | Near East | |||
| 7179 | Estonian Sign Language | Sign Language | European | 4500 | Threatened | 4 | Europe |
| 8595 | Etebi | Niger-Congo | Atlantic-Congo | 15000 | Vulnerable | 3 | Africa |
| 8793 | Etla | Otomanguean | Zapotecan | 1276 | Threatened | 4 | Mexico, Central America, Caribbean |
| 10803 | Eton | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Pacific |
| 3800 | Evant | Niger-Congo | Atlantic-Congo | 11000 | Vulnerable | 3 | Africa |
| 4142 | Even | Tungusic | Northern Tungusic | 7000 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 1186 | Evenki | Tungusic | Northern Tungusic | 10000 | Endangered | 5 | Caucasus; Europe; East Asia |
| 2006 | Éy7á7juuthem (Comox) | Salishan | Central Salish | 47 | Critically Endangered | 7 | North America |
| 507 | Eyak | Athabaskan-Eyak-Tlingit | Awakening | 8 | North America | ||
| 5931 | Fadashi | Berta | 8715 | Threatened | 4 | Africa | |
| 5510 | Fagani | Austronesian | Malayo-Polynesian | 900 | Endangered | 5 | Pacific |
| 2836 | Faire Atta | Austronesian | Malayo-Polynesian | 475 | Endangered | 5 | Southeast Asia |
| 10693 | Faiwol | Trans-New Guinea | Ok | 4500 | Threatened | 4 | Pacific |
| 5630 | Falam Chin | Sino-Tibetan | Kukish | 107300 | Vulnerable | 3 | South Asia; Southeast Asia |
| 4144 | Fali of Baissa | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 5994 | Fam | Niger-Congo | Atlantic-Congo | 500 | Endangered | 5 | Africa |
| 8849 | Fang | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 101 | Fania | Niger-Congo | Atlantic-Congo | 1100 | Threatened | 4 | Africa |
| 10783 | Farnanto | Austronesian | Malayo-Polynesian | 100 | Severely Endangered | 6 | Pacific |
| 4891 | Farsaf | Austronesian | Malayo-Polynesian | 160 | Endangered | 5 | Pacific |
| 10726 | Farvi | Indo-European | Indo-Iranian | 500 | Endangered | 5 | Near East |
| 1373 | Fas | Baibai-Fas | 5000 | Threatened | 4 | Pacific | |
| 10734 | Fasu | Isolate | Pacific | 1200 | Threatened | 4 | Pacific |
| 1762 | Fayu | Lakes Plain | 400 | Threatened | 4 | Southeast Asia | |
| 3686 | Fembe | Trans-New Guinea | Bosavi | 350 | Endangered | 5 | Pacific |
| 8490 | Figuig | Afro-Asiatic | Berber | 14280 | Threatened | 4 | Africa |
| 7355 | Finnish Sign Language | Sign Language | European | 5000 | Threatened | 4 | Europe |
| 7180 | Finnish-Swedish Sign Language | Sign Language | European | 150 | Endangered | 5 | Europe |
| 5013 | Firan | Niger-Congo | Atlantic-Congo | 3000 | Vulnerable | 3 | Africa |
| 7356 | Flemish Sign Language | Sign Language | European | 6000 | Threatened | 4 | Europe |
| 4150 | Flinders Island | Pama-Nyungan | Paman | 3 | Critically Endangered | 7 | Australia |
| 4149 | Foau | Lakes Plain | 230 | Endangered | 5 | Southeast Asia | |
| 570 | Fongoro | Central Sudanic | Bongo-Bagirmi | Critically Endangered | 7 | Africa | |
| 4130 | Forest Enets | Uralic | Samoyedic | 10 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 3393 | Forest Nenets | Uralic | Samoyedic | Endangered | 5 | Caucasus; Europe; East Asia | |
| 3161 | Forest Yukagir | Yukaghir | 50 | Critically Endangered | 7 | Caucasus; Europe; East Asia | |
| 3395 | Francoprovençal | Indo-European | Italic | 130000 | Endangered | 5 | Europe |
| 3400 | Friulian | Indo-European | Italic | 425000 | Vulnerable | 3 | Europe |
| 547 | Fungom | Niger-Congo | Atlantic-Congo | 1000 | Threatened | 4 | Africa |
| 5303 | Fyem | Niger-Congo | Atlantic-Congo | 14000 | Endangered | 5 | Africa |
| 1791 | Bakairí | Cariban | Pekodian | 900 | Endangered | 5 | South America |
| 5513 | Baki | Austronesian | Malayo-Polynesian | 150 | Endangered | 5 | Pacific |
| 538 | Bakole | Niger-Congo | Atlantic-Congo | 300 | Endangered | 5 | Africa |
| 1082 | Bakpinka | Niger-Congo | Atlantic-Congo | 4000 | Threatened | 4 | Africa |
| 1356 | Balaesang | Austronesian | Malayo-Polynesian | 3200 | Threatened | 4 | Southeast Asia |
| 539 | Baldemu | Afro-Asiatic | Chadic | 3 | Critically Endangered | 7 | Africa |
| 5007 | Bali | Niger-Congo | Atlantic-Congo | 1000 | Threatened | 4 | Africa |
| 3907 | Balkan Gagauz Turkish | Turkic | Oghuz | 331000 | Threatened | 4 | Europe |
| 5342 | Balkan Romani | Indo-European | Indo-Iranian | 611800 | At risk | 2 | Europe; Caucasus; Near East; East Asia |
| 7329 | Balti | Sino-Tibetan | Bodish | 337000 | At risk | 2 | South Asia |
| 5341 | Baltic Romani | Indo-European | Indo-Iranian | 58460 | Vulnerable | 3 | Europe; Caucasus; East Asia |
| 6993 | Ban Khor Sign Language | Sign Language | Southeast Asian | 400 | Endangered | 5 | Southeast Asia |
| 3895 | Bana | Afro-Asiatic | Chadic | 23000 | Vulnerable | 3 | Africa |
| 10640 | Banaro | Isolate | 2569 | Threatened | 4 | Pacific | |
| 1792 | Banawá | Arawan | 100 | Endangered | 5 | South America | |
| 2245 | Bandial | Niger-Congo | Atlantic-Congo | 7000 | Threatened | 4 | Africa |
| 3897 | Bandjalang | Pama-Nyungan | Bandjalangic | Severely Endangered | 6 | Australia | |
| 3798 | Bangandu | Niger-Congo | Atlantic-Congo | 2700 | Threatened | 4 | Africa |
| 1588 | Bangani | Indo-European | Indo-Iranian | 12000 | Vulnerable | 3 | South Asia |
| 8172 | Bangime | Isolate | African | 2100 | Threatened | 4 | Africa |
| 2706 | Bangka | Austronesian | Malayo-Polynesian | 50 | Critically Endangered | 7 | Southeast Asia |
| 3208 | Baniwa | Arawakan | Northern Arawakan | 9554 | Threatened | 4 | South America |
| 4015 | Bankagooma | Niger-Congo | Mande | 6000 | Threatened | 4 | Africa |
| 8732 | Bankan Tey | Niger-Congo | Dogon | 1320 | Threatened | 4 | Africa |
| 5810 | Bankon | Niger-Congo | Atlantic-Congo | 12000 | Vulnerable | 3 | Africa |
| 1590 | Bantawa | Sino-Tibetan | Kiranti | 371056 | Threatened | 4 | South Asia |
| 4021 | Bará | Tucanoan | Eastern Tucanoan | 130 | Endangered | 5 | South America |
| 1123 | Baraba Tatar | Turkic | Kipchak | 8000 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 5252 | Barababaraba | Pama-Nyungan | Kulinic | 5 | Critically Endangered | 7 | Australia |
| 4565 | Barain | Afro-Asiatic | Chadic | 4100 | Threatened | 4 | Africa |
| 1591 | Baram | Sino-Tibetan | Tibeto-Kanauri | 53 | Critically Endangered | 7 | South Asia |
| 4593 | Barambu | Niger-Congo | Atlantic-Congo | 25600 | Vulnerable | 3 | Africa |
| 1357 | Baras | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Southeast Asia |
| 4024 | Barasano | Tucanoan | Eastern Tucanoan | 1924 | Threatened | 4 | South America |
| 10859 | Barbareño | Chumashan | Awakening | 8 | |||
| 3892 | Bardi | Nyulnyulan | Western Nyulnyulan | 5 | Critically Endangered | 7 | Australia |
| 1864 | Baré | Arawakan | Northern Arawakan | 2 | Critically Endangered | 7 | South America |
| 686 | Barí | Chibchan | Magdalenic | 4000 | Vulnerable | 3 | South America |
| 4008 | Barikanchi | Pidgin or Creole | Hausa based | Africa | |||
| 6649 | Barngarla | Pama-Nyungan | Thura-Yura | Awakening | 8 | Australia | |
| 3792 | Barombi | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 3960 | Barrow Point | Pama-Nyungan | Paman | 1 | Critically Endangered | 7 | Australia |
| 1592 | Bartangi | Indo-European | Indo-Iranian | 2425 | Vulnerable | 3 | Near East |
| 3978 | Bashkardi | Indo-European | Indo-Iranian | 7030 | Threatened | 4 | Near East |
| 1383 | Basketo | Afro-Asiatic | Omotic | 60000 | Vulnerable | 3 | Africa |
| 3807 | Bassa-Kontagora | Niger-Congo | Atlantic-Congo | 10 | Critically Endangered | 7 | Africa |
| 7713 | Bassari | Niger-Congo | Atlantic-Congo | 17500 | Vulnerable | 3 | Africa |
| 2845 | Bataan Ayta | Austronesian | Malayo-Polynesian | 527 | Endangered | 5 | Southeast Asia |
| 2849 | Batak | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Southeast Asia |
| 10889 | Batak Karo | Austronesian | 570000 | Southeast Asia | |||
| 1268 | Batek | Austro-Asiatic | Aslian | 960 | Endangered | 5 | Southeast Asia |
| 3984 | Bateri | Indo-European | Indo-Iranian | 29051 | Vulnerable | 3 | South Asia |
| 1595 | Baṭḥari | Afro-Asiatic | Semitic | 100 | Severely Endangered | 6 | Near East |
| 540 | Bati (Cameroon) | Niger-Congo | Atlantic-Congo | 800 | Endangered | 5 | Africa |
| 3995 | Bati (Indonesia) | Austronesian | Malayo-Polynesian | 3500 | Threatened | 4 | Southeast Asia |
| 3360 | Batjamalh | Isolate | Australian | 12 | Severely Endangered | 6 | Australia |
| 1124 | Batsbi | Northeast Caucasian | Nakh | 800 | Severely Endangered | 6 | Caucasus |
| 6772 | Batyala | Pama-Nyungan | Waka-Kabic | Awakening | 8 | Australia | |
| 1845 | Baure | Arawakan | Southern Arawakan | 20 | Critically Endangered | 7 | South America |
| 1596 | Bawm Chin | Sino-Tibetan | Kukish | Vulnerable | 3 | South Asia; Southeast Asia | |
| 5055 | Baygo | Daju | Western Daju | 0 | Dormant | 9 | Africa |
| 4019 | Bayono | Bayono-Awbono | 100 | Vulnerable | 3 | Southeast Asia | |
| 5990 | Bayot | Niger-Congo | Atlantic-Congo | 17150 | Vulnerable | 3 | Africa |
| 3982 | Bayso | Afro-Asiatic | Cushitic | 3200 | Threatened | 4 | Africa |
| 1675 | Bearlake | Athabaskan-Eyak-Tlingit | Athabaskan | 580 | Endangered | 5 | North America |
| 9809 | Bebeli | Austronesian | Malayo-Polynesian | 780 | Severely Endangered | 6 | Pacific |
| 1358 | Bedoanas | Austronesian | Malayo-Polynesian | 180 | Endangered | 5 | Southeast Asia |
| 584 | Beeke | Niger-Congo | Atlantic-Congo | 1000 | Endangered | 5 | Africa |
| 541 | Beezen | Niger-Congo | Atlantic-Congo | 750 | Threatened | 4 | Africa |
| 9729 | Belait | Austronesian | Malayo-Polynesian | 700 | Severely Endangered | 6 | Southeast Asia |
| 3999 | Belanda Bor | Nilotic | Western Nilotic | 8000 | Threatened | 4 | Africa |
| 4010 | Bele | Afro-Asiatic | Chadic | 120 | Endangered | 5 | Africa |
| 10924 | Belep | 1600 | Threatened | 4 | Pacific | ||
| 1580 | Belhariya | Sino-Tibetan | Kiranti | Severely Endangered | 6 | South Asia | |
| 3898 | Beli (Papua New Guinea) | Torricelli | Maimai | 1453 | Vulnerable | 3 | Pacific |
| 3932 | Beli (Sudan) | Central Sudanic | Bongo-Bagirmi | 6600 | Threatened | 4 | Africa |
| 1597 | Bellari | Dravidian | South Dravidian | 1000 | Endangered | 5 | South Asia |
| 8731 | Ben Tey | Niger-Congo | Dogon | 3000 | Threatened | 4 | Africa |
| 10413 | Bende | Niger-Congo | Atlantic-Congo | 34145 | Endangered | 5 | Africa |
| 588 | Benga | Niger-Congo | Atlantic-Congo | Severely Endangered | 6 | Africa | |
| 1360 | Benggoi | Austronesian | Malayo-Polynesian | 350 | Endangered | 5 | Southeast Asia |
| 283 | Beni Iznassen | Afro-Asiatic | Berber | Severely Endangered | 6 | Africa | |
| 2119 | Bepour | Trans-New Guinea | Madang | 50 | Severely Endangered | 6 | Pacific |
| 566 | Berakou | Central Sudanic | Bongo-Bagirmi | 2 | Critically Endangered | 7 | Africa |
| 3969 | Berbice Creole Dutch | Pidgin or Creole | Dutch based creole | 0 | Dormant | 9 | South America |
| 10621 | Berinomo | Sepik | Sepik Hill | 178 | Endangered | 5 | Pacific |
| 2308 | Besme | Niger-Congo | Atlantic-Congo | 1230 | Threatened | 4 | Africa |
| 1361 | Besoa | Austronesian | Malayo-Polynesian | 8000 | Threatened | 4 | Southeast Asia |
| 3899 | Betaf | Orya-Tor | Tor | 600 | Endangered | 5 | Southeast Asia |
| 4018 | Bete | Niger-Congo | Atlantic-Congo | Severely Endangered | 6 | Africa | |
| 361 | Beti | Niger-Congo | Atlantic-Congo | 200 | Endangered | 5 | Africa |
| 1453 | Betta Kurumba | Dravidian | South Dravidian | 4000 | Threatened | 4 | South Asia |
| 6025 | Bezhta | Northeast Caucasian | Daghestanian | 6200 | Threatened | 4 | Caucasus; Europe; East Asia |
| 1598 | Bhadrawahi | Indo-European | Indo-Iranian | 69000 | Vulnerable | 3 | South Asia |
| 1599 | Bhalesi | Indo-European | Indo-Iranian | South Asia | |||
| 3909 | Bhaya | Indo-European | Indo-Iranian | 700 | Endangered | 5 | South Asia |
| 1601 | Bhumij | Austro-Asiatic | Munda | 100000 | At risk | 2 | South Asia |
| 7810 | Biafada | Niger-Congo | Atlantic-Congo | 44900 | Vulnerable | 3 | Africa |
| 1363 | Biak | Austronesian | Malayo-Polynesian | 70000 | Severely Endangered | 6 | Southeast Asia |
| 6773 | Bibbulman | Pama-Nyungan | Nyungic | 0 | Dormant | 9 | Australia |
| 4020 | Bidjara | Pama-Nyungan | Maric | 20 | Severely Endangered | 6 | Australia |
| 1312 | Bierebo | Austronesian | Malayo-Polynesian | 950 | Threatened | 4 | Pacific |
| 3970 | Bieria | Austronesian | Malayo-Polynesian | 25 | Severely Endangered | 6 | Pacific |
| 3918 | Biete | Sino-Tibetan | Kukish | 19000 | Vulnerable | 3 | South Asia |
| 3908 | Biga | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Southeast Asia |
| 10756 | Bigambal | Pama-Nyungan | Uncertain | Dormant | 9 | Australia | |
| 1468 | Bih | Austronesian | Malayo-Polynesian | Critically Endangered | 7 | Southeast Asia | |
| 542 | Bikya | Niger-Congo | Atlantic-Congo | 1 | Critically Endangered | 7 | Africa |
| 2120 | Bilakura | Trans-New Guinea | Madang | 30 | Severely Endangered | 6 | Pacific |
| 4603 | Bilen | Afro-Asiatic | Chadic | 90000 | Vulnerable | 3 | Africa |
| 5561 | Bilinarra | Pama-Nyungan | Ngumpin-Yapa | 1 | Critically Endangered | 7 | Australia |
| 2509 | Biliru | Austronesian | Malayo-Polynesian | 50 | Severely Endangered | 6 | Pacific |
| 10808 | Bilua | Isolate | Pacific | 8740 | Threatened | 4 | Pacific |
| 10888 | Bima | Austronesian | Central-Eastern Malayo Polynesian | 500000 | At risk | 2 | Southeast Asia |
| 4596 | Bolondo | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 1237 | Bolyu | Austro-Asiatic | Pakanic | 500 | Severely Endangered | 6 | East Asia |
| 363 | Bom | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 4597 | Bomboli | Niger-Congo | Atlantic-Congo | 2500 | Threatened | 4 | Africa |
| 10430 | Bon Gula | Niger-Congo | Atlantic-Congo | 1500 | Threatened | 4 | Africa |
| 5062 | Bondei | Niger-Congo | Atlantic-Congo | 80000 | Vulnerable | 3 | Africa |
| 8736 | Bondu So | Niger-Congo | Dogon | 24700 | Vulnerable | 3 | Africa |
| 10891 | Bonerate | Austronesian | Malayo-Polynesian | Threatened | 4 | Southeast Asia | |
| 1405 | Bonerif | Orya-Tor | Tor | 200 | Endangered | 5 | Southeast Asia |
| 1407 | Bonggo | Austronesian | Malayo-Polynesian | 432 | Severely Endangered | 6 | Southeast Asia |
| 3953 | Bongo | Central Sudanic | Bongo-Bagirmi | 10100 | Vulnerable | 3 | Africa |
| 521 | Bonjo | Niger-Congo | Atlantic-Congo | 2500 | Endangered | 5 | Africa |
| 3950 | Bonkiman | Trans-New Guinea | Finisterre-Huon | 180 | Endangered | 5 | Pacific |
| 3944 | Boon | Afro-Asiatic | Cushitic | 59 | Severely Endangered | 6 | Africa |
| 6677 | Boonwurrung | Pama-Nyungan | Kulinic | Awakening | 8 | Australia | |
| 568 | Boor | Afro-Asiatic | Chadic | 100 | Severely Endangered | 6 | Africa |
| 1854 | Bora | Boran | 2500 | Severely Endangered | 6 | South America | |
| 10647 | Borei | Lower Sepik-Ramu | Ramu | 1202 | Threatened | 4 | Pacific |
| 1607 | Bori | Sino-Tibetan | Tani | 2000 | Threatened | 4 | South Asia |
| 3605 | Boró | Afro-Asiatic | Omotic | 4000 | Threatened | 4 | Africa |
| 3952 | Bororo | Bororoan | 700 | Endangered | 5 | South America | |
| 2596 | Boruca | Chibchan | Isthmic | Awakening | 8 | Mexico, Central America, Caribbean | |
| 2121 | Boselewa | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Pacific |
| 10649 | Bosmun | Lower Sepik-Ramu | Ramu | 1768 | Endangered | 5 | Pacific |
| 3937 | Bote-Majhi | Indo-European | Indo-Iranian | 24664 | Vulnerable | 3 | South Asia |
| 1728 | Botlikh | Northeast Caucasian | Daghestanian | 5500 | Threatened | 4 | Caucasus; Europe; East Asia |
| 10488 | Boto | Afro-Asiatic | Chadic | 500 | Endangered | 5 | Africa |
| 4731 | Botovro | Austronesian | Malayo-Polynesian | 430 | Endangered | 5 | Pacific |
| 10555 | Bragat | Torricelli | Palei | 355 | Endangered | 5 | Pacific |
| 10658 | Breri | Lower Sepik-Ramu | Ramu | 720 | Endangered | 5 | Pacific |
| 1228 | Breton | Indo-European | Celtic | 206000 | At risk | 2 | Europe |
| 687 | Bribri | Chibchan | Isthmic | 7475 | Threatened | 4 | Mexico, Central America, Caribbean |
| 7176 | Bribri Sign Language | Sign Language | Mexican, Central American, or Caribbean | 400 | Endangered | 5 | Mexico, Central America, Caribbean |
| 1609 | Brokkat | Sino-Tibetan | Bodish | 300 | Endangered | 5 | South Asia |
| 1610 | Brokpake | Sino-Tibetan | Bodish | 5000 | Threatened | 4 | South Asia |
| 3927 | Brokskat | Indo-European | Indo-Iranian | 3000 | Threatened | 4 | South Asia |
| 7177 | Brunca Sign Language | Sign Language | Mexican, Central American, or Caribbean | 808 | Endangered | 5 | Mexico, Central America, Caribbean |
| 484 | Bu | Niger-Congo | Atlantic-Congo | 6000 | Threatened | 4 | Africa |
| 6776 | Buandig | Pama-Nyungan | Kulinic | Awakening | 8 | Australia | |
| 544 | Bubia | Niger-Congo | Atlantic-Congo | 600 | Severely Endangered | 6 | Africa |
| 2122 | Budibud | Austronesian | Malayo-Polynesian | 120 | Endangered | 5 | Pacific |
| 1408 | Budong-Budong | Austronesian | Malayo-Polynesian | 70 | Severely Endangered | 6 | Southeast Asia |
| 1229 | Budukh | Northeast Caucasian | Daghestanian | Threatened | 4 | Caucasus | |
| 3799 | Buduma | Afro-Asiatic | Chadic | 54800 | Vulnerable | 3 | Africa |
| 1238 | Bugan | Austro-Asiatic | Pakanic | 2700 | Vulnerable | 3 | East Asia |
| 1627 | Chorei | Sino-Tibetan | Kukish | Severely Endangered | 6 | South Asia | |
| 3013 | Chorote | Matacoan | 2057 | Threatened | 4 | South America | |
| 1250 | Chrau | Austro-Asiatic | Bahnaric | 15000 | Vulnerable | 3 | Southeast Asia |
| 1989 | Chru | Austronesian | Malayo-Polynesian | 11000 | Threatened | 4 | Southeast Asia |
| 1226 | Chu-ng | Austro-Asiatic | Pearic | 17 | Threatened | 4 | Southeast Asia |
| 3467 | Chuj | Mayan | Q'anjob'alan-Chujean | 38253 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1730 | Chukchi | Chukotko-Kamchatkan | Chukotkan | 11000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 4060 | Chukwa | Sino-Tibetan | Kiranti | 5 | Critically Endangered | 7 | South Asia |
| 1736 | Chulym | Turkic | South Siberian | 35 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 7289 | Chungli | Sino-Tibetan | Aoic | 65275 | Vulnerable | 3 | South Asia |
| 1628 | Churahi | Indo-European | Indo-Iranian | 110552 | At risk | 2 | South Asia |
| 1305 | Cicipu | Niger-Congo | Atlantic-Congo | 20000 | Vulnerable | 3 | Africa |
| 3164 | Cimbrian | Indo-European | Germanic | 2000 | Threatened | 4 | Europe |
| 5128 | Cinta Larga | Tupian | Mondean | 645 | Endangered | 5 | South America |
| 1693 | Coast Miwok | Utian | Miwokan | 0 | Dormant | 9 | North America |
| 10528 | Coast Mixtec | Otomanguean | Mixtecan | 63180 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 8794 | Coatlán Zapotec | Otomanguean | Zapotecan | 75000 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 2028 | Cocama-Cocamilla | Tupian | Tupi-Guaranian | 1000 | Critically Endangered | 7 | South America |
| 1694 | Cocopah | Cochimi-Yuman | Yuman | 450 | Endangered | 5 | North America; Mexico, Central America, Caribbean |
| 6681 | Gundungurra | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 4260 | Gungabula | Pama-Nyungan | Maric | 2 | Critically Endangered | 7 | Australia |
| 4379 | Gunggari | Pama-Nyungan | Maric | 10 | Severely Endangered | 6 | Australia |
| 3786 | Gunin | Worrorran | Northern Worrorran | 50 | Severely Endangered | 6 | Australia |
| 2899 | Gününa-Küne | Isolate | South American | 0 | Dormant | 9 | South America |
| 4261 | Gunya | Pama-Nyungan | Maric | 3 | Critically Endangered | 7 | Australia |
| 2219 | Guramalum | Austronesian | Malayo-Polynesian | 0 | Dormant | 9 | Pacific |
| 4263 | Gurani | Indo-European | Indo-Iranian | 100000 | Vulnerable | 3 | Near East |
| 6351 | Gureng Gureng | Pama-Nyungan | Waka-Kabic | 1 | Critically Endangered | 7 | Australia |
| 4242 | Guriaso | Isolate | 421 | Endangered | 5 | Pacific | |
| 1377 | Gurindji | Pama-Nyungan | Ngumpin-Yapa | 175 | Endangered | 5 | Australia |
| 3267 | Jabutí | Jabutian | 50 | Severely Endangered | 6 | South America | |
| 4321 | Jad | Sino-Tibetan | Bodish | 2000 | Endangered | 5 | South Asia |
| 1264 | Jah Hut | Austro-Asiatic | Aslian | Threatened | 4 | Southeast Asia | |
| 1263 | Jahai | Austro-Asiatic | Aslian | Threatened | 4 | Southeast Asia | |
| 6149 | Jakalteko | Mayan | Q'anjob'alan-Chujean | 38350 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 7185 | Jakarta Sign Language | Sign Language | Southeast Asian | 7200 | Threatened | 4 | Southeast Asia |
| 10920 | Jakato | West Chadic A3 group | 500 | Endangered | 5 | ||
| 4315 | Jakun | Austronesian | Malayo-Polynesian | 10000 | Vulnerable | 3 | Southeast Asia |
| 4004 | Jalkunan | Niger-Congo | Mande | 600 | Endangered | 5 | Africa |
| 7186 | Jamaican Country Sign Language | Sign Language | Mexican, Central American, or Caribbean | 2500 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2924 | Jamamadí | Arawan | 980 | Endangered | 5 | South America | |
| 2608 | Jaminjung | Mirndi | 100 | Severely Endangered | 6 | Australia | |
| 6785 | Janday | Pama-Nyungan | Durubulic | Awakening | 8 | Australia | |
| 4337 | Jangshung | Sino-Tibetan | Tibeto-Kanauri | 1990 | Threatened | 4 | South Asia |
| 5016 | Janji | Niger-Congo | Atlantic-Congo | 1150 | Threatened | 4 | Africa |
| 8129 | Japréria | Cariban | 95 | Severely Endangered | 6 | South America | |
| 848 | Jaqaru | Aymaran | 725 | Endangered | 5 | South America | |
| 3845 | Jarawa | South Andamanese | 340 | Vulnerable | 3 | South Asia | |
| 10074 | Jarqu'i | Indo-European | Indo-Iranian | 14000 | Threatened | 4 | Near East |
| 4069 | Jaru | Pama-Nyungan | Ngumpin-Yapa | 250 | Severely Endangered | 6 | Australia |
| 5317 | Jauja-Huanca Quechua | Quechuan | Quechua I | 250000 | At risk | 2 | South America |
| 2210 | Kung | Niger-Congo | Atlantic-Congo | 700 | Endangered | 5 | Africa |
| 6660 | Kungarakany | Isolate | 0 | Dormant | 9 | Australia | |
| 4456 | Kunggara | Pama-Nyungan | Paman | 10 | Critically Endangered | 7 | Australia |
| 6787 | Kungkari | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 3765 | Kunjen | Pama-Nyungan | Paman | 22 | Critically Endangered | 7 | Australia |
| 2229 | Kuot | Isolate | Pacific | 2400 | Threatened | 4 | Pacific |
| 5023 | Kupto | Afro-Asiatic | Chadic | 3000 | Threatened | 4 | Africa |
| 4370 | Kurichiya | Dravidian | 29400 | Endangered | 5 | South Asia | |
| 6694 | Kurnai | Pama-Nyungan | Gippsland | Awakening | 8 | Australia | |
| 3396 | Kurrama | Pama-Nyungan | Ngayarta | 10 | Critically Endangered | 7 | Australia |
| 2215 | Kursav | Trans-New Guinea | Madang | 10 | Critically Endangered | 7 | Pacific |
| 4201 | Kurtjar | Pama-Nyungan | Paman | 2 | Critically Endangered | 7 | Australia |
| 2269 | Malalamai | Austronesian | Malayo-Polynesian | 150 | Endangered | 5 | Pacific |
| 7870 | Malé | Afro-Asiatic | Omotic | 53800 | Vulnerable | 3 | Africa |
| 5879 | Maleng | Austro-Asiatic | Vietic | 500 | Endangered | 5 | Southeast Asia |
| 6991 | Malian Sign Language | Sign Language | African | Endangered | 5 | Africa | |
| 1748 | Maliseet-Passamaquoddy | Algic | Algonquian | 500 | Endangered | 5 | North America |
| 6672 | Malkana | Pama-Nyungan | Kartu | 0 | Dormant | 9 | Australia |
| 2700 | Malo | Afro-Asiatic | Omotic | 20151 | Vulnerable | 3 | Africa |
| 10752 | Malua Bay | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Pacific |
| 6695 | Malyangapa | Pama-Nyungan | Yarli | 0 | Dormant | 9 | Australia |
| 8091 | Mam | Mayan | Mamean | 519664 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4654 | Mamaa | Trans-New Guinea | Finisterre-Huon | 200 | Endangered | 5 | Pacific |
| 3987 | Bugawac | Austronesian | Malayo-Polynesian | 9690 | Threatened | 4 | Pacific |
| 3903 | Bugun | Sino-Tibetan | Kho-Bwa | 1700 | Threatened | 4 | South Asia |
| 3911 | Bukhori | Indo-European | Indo-Iranian | 110000 | At risk | 2 | Near East |
| 2123 | Bukiyip | Torricelli | Arapeshan | 12000 | Endangered | 5 | Pacific |
| 3938 | Bulgebi | Trans-New Guinea | Finisterre-Huon | 50 | Severely Endangered | 6 | Pacific |
| 10466 | Buli | Afro-Asiatic | Chadic | Endangered | 5 | Africa | |
| 5422 | Bulo Stieng | Austro-Asiatic | Bahnaric | Threatened | 4 | Southeast Asia | |
| 3924 | Bulu | Austronesian | Malayo-Polynesian | 910 | Endangered | 5 | Pacific |
| 10249 | Bumang | Austro-Asiatic | 200 | Threatened | 4 | East Asia | |
| 2046 | Bumbita | Torricelli | Arapeshan | 2353 | Endangered | 5 | Pacific |
| 10636 | Bun | Yuat | 194 | Endangered | 5 | Pacific | |
| 10570 | Buna | Torricelli | Marienberg Hills | 1259 | Threatened | 4 | Pacific |
| 7230 | Bunak | Timor-Alor-Pantar | 100000 | Vulnerable | 3 | Southeast Asia; Pacific | |
| 535 | Bung | Niger-Congo | Atlantic-Congo | Dormant | 9 | Africa | |
| 10576 | Bungain | Torricelli | Marienberg Hills | 2451 | Threatened | 4 | Pacific |
| 8742 | Bunoge | Niger-Congo | Dogon | 1000 | Threatened | 4 | Africa |
| 3893 | Bunuba | Bunaban | Critically Endangered | 7 | Australia | ||
| 10773 | Bura | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 2105 | Burarra | Maningrida | 500 | Endangered | 5 | Australia | |
| 1409 | Burate | East Geelvink Bay | 100 | Endangered | 5 | Southeast Asia | |
| 5992 | Bure | Afro-Asiatic | Chadic | 10 | Critically Endangered | 7 | Africa |
| 1230 | Burgenland Croatian | Indo-European | Balto-Slavic | 28000 | Threatened | 4 | Europe |
| 4608 | Burji | Afro-Asiatic | Cushitic | 46100 | Vulnerable | 3 | Africa |
| 10750 | Burmbar | Austronesian | Malayo-Polynesian | 900 | Endangered | 5 | Pacific |
| 4027 | Burmeso | Isolate | Pacific | 250 | Endangered | 5 | Southeast Asia |
| 10610 | Burui | Sepik | Ndu | 150 | Endangered | 5 | Pacific |
| 3701 | Burumakok | Trans-New Guinea | Ok | 40 | Severely Endangered | 6 | Southeast Asia |
| 5064 | Burunge | Afro-Asiatic | Cushitic | Endangered | 5 | Africa | |
| 1614 | Burushaski | Isolate | South Asian | 100300 | Threatened | 4 | South Asia |
| 3910 | Busa | Isolate | Pacific | 240 | Endangered | 5 | Pacific |
| 569 | Buso | Afro-Asiatic | Chadic | 45 | Severely Endangered | 6 | Africa |
| 1410 | Busoa | Austronesian | Malayo-Polynesian | 2300 | Threatened | 4 | Southeast Asia |
| 5993 | Bussa | Afro-Asiatic | Cushitic | 1500 | Threatened | 4 | Africa |
| 545 | Busuu | Niger-Congo | Atlantic-Congo | 8 | Critically Endangered | 7 | Africa |
| 10786 | Butmas-Tur | Austronesian | Malayo-Polynesian | 520 | Endangered | 5 | Pacific |
| 8929 | Buu (Cameroon) | Niger-Congo | Atlantic-Congo | 150 | Endangered | 5 | Africa |
| 10444 | Buu (Nigeria) | Afro-Asiatic | Chadic | 600 | Severely Endangered | 6 | Africa |
| 4330 | Buyuan Jinuo | Sino-Tibetan | Lolo-Burmese | 1000 | Endangered | 5 | East Asia |
| 3996 | Bwatoo | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 2673 | Bwisi | Niger-Congo | Atlantic-Congo | 4250 | Threatened | 4 | Africa |
| 1616 | Byangsi | Sino-Tibetan | Tibeto-Kanauri | 1500 | Threatened | 4 | South Asia |
| 5930 | C'ara | Afro-Asiatic | Omotic | 6932 | Threatened | 4 | Africa |
| 1753 | Caac | Austronesian | Malayo-Polynesian | 890 | Endangered | 5 | Pacific |
| 3070 | Cabécar | Chibchan | Isthmic | 8441 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2110 | Cabiyarí | Arawakan | Northern Arawakan | 311 | Endangered | 5 | South America |
| 1678 | Caddo | Caddoan | 25 | Critically Endangered | 7 | North America | |
| 5145 | Cahuarano | Zaparoan | Dormant | 9 | South America | ||
| 1679 | Cahuilla | Uto-Aztecan | Northern Uto-Aztecan | 6 | Critically Endangered | 7 | North America |
| 8121 | Cajamarca Quechua | Quechuan | Quechua IIC | 30000 | Threatened | 4 | South America |
| 10931 | Cajun French | 136701 | Endangered | 5 | North America | ||
| 2829 | Camarines Norte Agta | Austronesian | Malayo-Polynesian | 4000 | Vulnerable | 3 | Southeast Asia |
| 10129 | Cambodian Sign Language | Sign Language | Southeast Asian | 1500 | Endangered | 5 | Southeast Asia |
| 9290 | Central Jewish Neo-Aramaic | Afro-Asiatic | Semitic | Critically Endangered | 7 | Near East | |
| 5129 | Central Lalo | Sino-Tibetan | Lolo-Burmese | 300000 | Vulnerable | 3 | East Asia |
| 4045 | Central Mnong | Austro-Asiatic | Bahnaric | 52500 | Vulnerable | 3 | Southeast Asia |
| 4775 | Central Nicobarese | Austro-Asiatic | Nicobarese | 10100 | Vulnerable | 3 | South Asia |
| 1532 | Central Pomo | Pomoan | Dormant | 9 | North America | ||
| 8554 | Central Selkup | Uralic | Samoyedic | 2 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 1683 | Central Siberian Yupik | Eskimo-Aleut | Eskimo | 1300 | Threatened | 4 | Caucasus; Europe; North America; East Asia |
| 5087 | Central Tagbanwa | Austronesian | Malayo-Polynesian | 1000 | Endangered | 5 | Southeast Asia |
| 4161 | Centúúm | Isolate | African | Critically Endangered | 7 | Africa | |
| 3466 | Ch'orti' | Mayan | Ch'olan-Tseltalan | 9105 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2187 | Cha'palaa | Barbacoan | Southern Barbacoan | 9393 | Threatened | 4 | South America |
| 10452 | Chaari | Afro-Asiatic | Chadic | 500 | Endangered | 5 | Africa |
| 4156 | Chácobo | Pano-Tacanan | Mainline | 1000 | Vulnerable | 3 | South America |
| 4172 | Chaima | Cariban | Venezuelan | 112 | Endangered | 5 | South America |
| 4617 | Chakali | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 4618 | Chala | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 1618 | Chalikha | Sino-Tibetan | Bodish | 1000 | Threatened | 4 | South Asia |
| 1129 | Chamacoco | Zamucoan | 1300 | Threatened | 4 | South America | |
| 1234 | Chamalal | Northeast Caucasian | Daghestanian | 5000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 1617 | Chambeali | Indo-European | Indo-Iranian | 129654 | At risk | 2 | South Asia |
| 10631 | Chambri | Lower Sepik-Ramu | Lower Sepik | 1050 | Threatened | 4 | Pacific |
| 2178 | Chamicuro | Arawakan | Southern Arawakan | 8 | Critically Endangered | 7 | South America |
| 846 | Chamorro | Austronesian | Malayo-Polynesian | 92700 | Vulnerable | 3 | Pacific |
| 10635 | Changriwa | Yuat | 498 | Endangered | 5 | Pacific | |
| 1620 | Chantyal | Sino-Tibetan | Tamangic | 2000 | Threatened | 4 | South Asia |
| 1254 | Chatong | Austro-Asiatic | Katuic | 580 | Endangered | 5 | Southeast Asia |
| 7389 | Chaudangsi | Sino-Tibetan | Tibeto-Kanauri | 3500 | Endangered | 5 | South Asia |
| 4053 | Chaura | Austro-Asiatic | Nicobarese | 2020 | Threatened | 4 | South Asia |
| 2188 | Chayahuita | Cahuapanan | 14000 | Vulnerable | 3 | South America | |
| 4174 | Chenapian | Sepik | Wogamus | 180 | Endangered | 5 | Pacific |
| 4571 | Chenoua | Afro-Asiatic | Berber | 76300 | Vulnerable | 3 | Africa |
| 1622 | Chepang | Sino-Tibetan | Chepangic | 25097 | Vulnerable | 3 | South Asia |
| 5181 | Chepya | Sino-Tibetan | Lolo-Burmese | 2000 | Threatened | 4 | Southeast Asia |
| 7251 | Chesu | Sino-Tibetan | Lolo-Burmese | 3300 | Endangered | 5 | East Asia |
| 1266 | Chewong | Austro-Asiatic | Aslian | 400 | Severely Endangered | 6 | Southeast Asia |
| 1685 | Cheyenne | Algic | Algonquian | 2100 | Endangered | 5 | North America |
| 1623 | Chhintange | Sino-Tibetan | Kiranti | 3500 | Threatened | 4 | South Asia |
| 4059 | Chhulung | Sino-Tibetan | Kiranti | 1314 | Endangered | 5 | South Asia |
| 4169 | Chiapanec | Otomanguean | Manguean | Dormant | 9 | Mexico, Central America, Caribbean | |
| 3457 | Chichimeca-Jonaz | Otomanguean | Otopamean | 1582 | Threatened | 4 | Mexico, Central America, Caribbean |
| 1686 | Chickasaw | Muskogean | 600 | Endangered | 5 | North America | |
| 7004 | Chilean Sign Language | Sign Language | South American | 21000 | Vulnerable | 3 | South America |
| 4178 | Chilisso | Indo-European | Indo-Iranian | 2500 | Threatened | 4 | South Asia |
| 2431 | Chimila | Chibchan | Magdalenic | 900 | Endangered | 5 | South America |
| 3599 | Chini | Lower Sepik-Ramu | Ramu | 75 | Severely Endangered | 6 | Pacific |
| 4167 | Chinook Wawa | Pidgin or Creole | Chinook based | Critically Endangered | 7 | North America | |
| 2432 | Chipaya | Chipaya-Uru | 1625 | Threatened | 4 | South America | |
| 10852 | Chiquian-Bolognesi and Cajatambo Quechua | Quechuan | Quechua I | 245800 | Vulnerable | 3 | South America |
| 4625 | Chiquihuitlán Mazatec | Otomanguean | Popolocan | 1502 | Threatened | 4 | Mexico, Central America, Caribbean |
| 9709 | Chiquimulilla Xinka | Xincan | Awakening | 8 | Mexico, Central America, Caribbean | ||
| 1452 | Chiquitano | Isolate | South American | 4665 | Threatened | 4 | South America |
| 10733 | Chiriqui Sign Language | Sign Language | Mexican, Central American, or Caribbean | Threatened | 4 | Mexico, Central America, Caribbean | |
| 1624 | Chiru | Sino-Tibetan | Kukish | 7000 | Threatened | 4 | South Asia |
| 510 | Chitimacha | Isolate | North American | Awakening | 8 | North America | |
| 1691 | Chiwere | Siouan | Mississippi Valley Siouan | Awakening | 8 | North America | |
| 8769 | Choapan | Otomanguean | Zapotecan | 12000 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1626 | Chocangacakha | Sino-Tibetan | Bodish | 20000 | Vulnerable | 3 | South Asia |
| 3458 | Chocho | Otomanguean | Popolocan | 12554 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1692 | Choctaw | Muskogean | 10000 | Vulnerable | 3 | North America | |
| 1575 | Chokri Naga | Sino-Tibetan | Angami-Pochuri | 20000 | Vulnerable | 3 | South Asia |
| 3459 | Chol | Mayan | Ch'olan-Tseltalan | 128240 | At risk | 2 | Mexico, Central America, Caribbean |
| 1227 | Chong | Austro-Asiatic | Pearic | 500 | Severely Endangered | 6 | Southeast Asia |
| 4160 | Choni | Sino-Tibetan | Bodish | 154000 | At risk | 2 | East Asia |
| 3460 | Chontal de Tabasco | Mayan | Ch'olan-Tseltalan | 36267 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1912 | Cocos Islands Malay | Austronesian | Malayo-Polynesian | 5000 | Threatened | 4 | Australia; Southeast Asia |
| 1695 | Coeur d'Alene | Salishan | Interior Salish | 2 | Critically Endangered | 7 | North America |
| 1043 | Cofán | Isolate | South American | 1017 | Threatened | 4 | South America |
| 3097 | Cogui | Chibchan | Magdalenic | 9911 | Threatened | 4 | South America |
| 7005 | Colombian Sign Language | Sign Language | South American | Vulnerable | 3 | South America | |
| 1696 | Columbian | Salishan | Interior Salish | 25 | Critically Endangered | 7 | North America |
| 2005 | Comanche | Uto-Aztecan | Northern Uto-Aztecan | 100 | Severely Endangered | 6 | North America |
| 8113 | Conchucos Quechua | Quechuan | Quechua I | 510500 | Vulnerable | 3 | South America |
| 4047 | Côông | Sino-Tibetan | Lolo-Burmese | 450 | Severely Endangered | 6 | Southeast Asia |
| 673 | Copper Island Aleut | Mixed Language | Russian-Aleut | 0 | Dormant | 9 | Caucasus; Europe; East Asia |
| 6202 | Cora | Uto-Aztecan | Southern Uto-Aztecan | 17086 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3091 | Coreguaje | Tucanoan | Western Tucanoan | 2212 | Threatened | 4 | South America |
| 4050 | Cornish | Indo-European | Celtic | Awakening | 8 | Europe | |
| 3171 | Corsican | Indo-European | Italic | 160000 | At risk | 2 | Europe |
| 10709 | Cosao | Sino-Tibetan | Tibeto-Burman | Endangered | 5 | Southeast Asia; East Asia | |
| 2008 | Crow | Siouan | Missouri River Siouan | 3500 | Threatened | 4 | North America |
| 3471 | Cuicatec | Otomanguean | Mixtecan | 1641 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2465 | Cuiva | Guajiboan | 2885 | Threatened | 4 | South America | |
| 1733 | Culina | Arawan | 2854 | Threatened | 4 | South America | |
| 2009 | Cupeño | Uto-Aztecan | Northern Uto-Aztecan | Awakening | 8 | North America | |
| 2466 | Curripaco | Arawakan | Northern Arawakan | 12075 | Vulnerable | 3 | South America |
| 8128 | Cuzco Quechua | Quechuan | Quechua II | 1500000 | Vulnerable | 3 | South America |
| 3177 | Cypriot Spoken Arabic | Afro-Asiatic | Semitic | 2000 | Endangered | 5 | Europe |
| 7352 | Czech Sign Language | Sign Language | European | 12000 | Vulnerable | 3 | Europe |
| 4780 | Daasanach | Afro-Asiatic | Cushitic | 32064 | Vulnerable | 3 | Africa |
| 5009 | Daba | Afro-Asiatic | Chadic | 25000 | Vulnerable | 3 | Africa |
| 4067 | Dabe | Orya-Tor | Tor | 440 | Endangered | 5 | Southeast Asia |
| 5557 | Dadi Dadi | Pama-Nyungan | Lower Murray | 10 | Severely Endangered | 6 | Australia |
| 3181 | Dagur | Mongolic | Daguric | 50000 | Endangered | 5 | East Asia |
| 2678 | Dahālík | Afro-Asiatic | Semitic | 2500 | Threatened | 4 | Africa |
| 4064 | Dahalo | Afro-Asiatic | Cushitic | 400 | Endangered | 5 | Africa |
| 4595 | Daho-Doo | Niger-Congo | Atlantic-Congo | 4000 | Threatened | 4 | Africa |
| 4103 | Dair | Nubian | 1000 | Threatened | 4 | Africa | |
| 1680 | Dakelh (Carrier) | Athabaskan-Eyak-Tlingit | Athabaskan | 399 | Severely Endangered | 6 | North America |
| 1466 | Dakka | Austronesian | Malayo-Polynesian | 1500 | Threatened | 4 | Southeast Asia |
| 1252 | Dakkang | Austro-Asiatic | Katuic | 1198 | Threatened | 4 | Southeast Asia |
| 4091 | Dakpa | Sino-Tibetan | Bodish | 31000 | Vulnerable | 3 | South Asia |
| 1126 | Dalabon | Gunwinyguan | 5 | Critically Endangered | 7 | Australia | |
| 3189 | Dalecarlian | Indo-European | Germanic | 13000 | Threatened | 4 | Europe |
| 801 | Dama | Niger-Congo | Atlantic-Congo | 50 | Critically Endangered | 7 | Africa |
| 7750 | Damakawa | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 201 | Damal | Isolate | 4500 | Threatened | 4 | Southeast Asia | |
| 4093 | Dameli | Indo-European | Indo-Iranian | 5000 | Vulnerable | 3 | South Asia |
| 1412 | Dampelas | Austronesian | Malayo-Polynesian | 10300 | Vulnerable | 3 | Southeast Asia |
| 1244 | Danau | Austro-Asiatic | Palaungic | Endangered | 5 | Southeast Asia | |
| 1440 | Dane-Zaa (Beaver) | Athabaskan-Eyak-Tlingit | Athabaskan | 159 | Severely Endangered | 6 | North America |
| 2296 | Danezāgé' (Kaska) | Athabaskan-Eyak-Tlingit | Athabaskan | 250 | Severely Endangered | 6 | |
| 7811 | Dangaleat | Afro-Asiatic | Chadic | 45000 | Vulnerable | 3 | Africa |
| 7353 | Danish Sign Language | Sign Language | European | 5000 | Threatened | 4 | Europe |
| 4066 | Dao | Trans-New Guinea | Paniai Lakes | 250 | Endangered | 5 | Southeast Asia |
| 4095 | Daonda | Border | Waris | 135 | Endangered | 5 | Pacific |
| 4108 | Darai | Indo-European | Indo-Iranian | 3060 | Endangered | 5 | South Asia |
| 4106 | Darkhat | Mongolic | Common Mongolic | 20400 | Vulnerable | 3 | East Asia |
| 6678 | Darkinyung | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 4104 | Darma | Sino-Tibetan | Tibeto-Kanauri | 2600 | Threatened | 4 | South Asia |
| 10776 | Daruru | Austronesian | Malayo-Polynesian | 100 | Severely Endangered | 6 | Pacific |
| 10493 | Dass | Afro-Asiatic | Chadic | 8830 | Threatened | 4 | Africa |
| 2547 | Dâw | Nadahup | Eastern Makuan | 120 | Endangered | 5 | South America |
| 1470 | Dän kʼè (Southern Tutchone) | Athabaskan-Eyak-Tlingit | Athabaskan | 200 | Severely Endangered | 6 | North America |
| 305 | Defaka | Niger-Congo | Ijoid | 200 | Severely Endangered | 6 | Africa |
| 4746 | Deg | Niger-Congo | Atlantic-Congo | 27500 | Vulnerable | 3 | Africa |
| 2371 | Deg Xinag | Athabaskan-Eyak-Tlingit | Athabaskan | 14 | Severely Endangered | 6 | North America |
| 8450 | Dela-Oenale | Austronesian | Malayo-Polynesian | 7000 | Vulnerable | 3 | Southeast Asia |
| 4070 | Dem | Isolate | 1000 | Threatened | 4 | Southeast Asia | |
| 1414 | Demisa | East Geelvink Bay | 400 | Endangered | 5 | Southeast Asia | |
| 1735 | Demushbo | Pano-Tacanan | Mayoruna | 0 | Dormant | 9 | South America |
| 1445 | Dena'ina | Athabaskan-Eyak-Tlingit | Athabaskan | 75 | Severely Endangered | 6 | North America |
| 3229 | Dene K'e (Slavey) | Athabaskan-Eyak-Tlingit | Athabaskan | 3260 | Threatened | 4 | North America |
| 1689 | Dënesųłiné | Athabaskan-Eyak-Tlingit | Athabaskan | 2235 | Threatened | 4 | North America |
| 2145 | Dengalu | Austronesian | Malayo-Polynesian | 140 | Endangered | 5 | Pacific |
| 2558 | Dení | Arawan | 1200 | Threatened | 4 | South America | |
| 881 | Denya | Niger-Congo | Atlantic-Congo | 11200 | Vulnerable | 3 | Africa |
| 4071 | Deori | Sino-Tibetan | Brahmaputran | 28000 | Threatened | 4 | South Asia |
| 10674 | Dera | Senagi | 1200 | Threatened | 4 | Southeast Asia; Pacific | |
| 1455 | Desano | Tucanoan | Eastern Tucanoan | 450 | Endangered | 5 | South America |
| 4805 | Dewoin | Niger-Congo | Atlantic-Congo | 8100 | Threatened | 4 | Africa |
| 4079 | Dhaiso | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 4117 | Dhanggati | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 5725 | Dhangu-Djangu | Pama-Nyungan | Yolngu | 350 | Endangered | 5 | Australia |
| 4080 | Dhanwar | Indo-European | Indo-Iranian | 23721 | Threatened | 4 | South Asia |
| 8329 | Dhao | Austronesian | Malayo-Polynesian | 3000 | Threatened | 4 | Southeast Asia |
| 5114 | Dharawal | Pama-Nyungan | Yuin-Kuric | 4 | Critically Endangered | 7 | Australia |
| 6686 | Dharug | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 6350 | Dharumbal | Pama-Nyungan | Maric | Awakening | 8 | Australia | |
| 4065 | Dhay'yi | Pama-Nyungan | Yolngu | 3 | Critically Endangered | 7 | Australia |
| 4076 | Dhimal | Sino-Tibetan | Dhimalish | 20000 | Endangered | 5 | South Asia |
| 6777 | Dhungaloo | Pama-Nyungan | Maric | 0 | Dormant | 9 | Australia |
| 6659 | Dhurga | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 6029 | Dhuwal | Pama-Nyungan | Yolngu | 3044 | Threatened | 4 | Australia |
| 6663 | Dhuwala | Pama-Nyungan | Yolngu | 321 | Endangered | 5 | Australia |
| 5134 | Diahói | Tupian | Tupi-Guaranian | 4 | Critically Endangered | 7 | South America |
| 10735 | Dibiyaso | Isolate | Pacific | 1950 | Threatened | 4 | Pacific |
| 525 | Dibole | Niger-Congo | Atlantic-Congo | 3500 | Threatened | 4 | Africa |
| 5700 | Digaro-Mishmi | Sino-Tibetan | Digarish | 6000 | Threatened | 4 | South Asia; East Asia |
| 1716 | Diitiidʔaatx̣ (Nitinat) | Wakashan | Southern Wakashan | 7 | Critically Endangered | 7 | North America |
| 4082 | Dilling | Nubian | 5300 | Threatened | 4 | Africa | |
| 5627 | Dimasa | Sino-Tibetan | Brahmaputran | 112000 | At risk | 2 | South Asia |
| 2207 | Dimbong | Niger-Congo | Atlantic-Congo | 150 | Threatened | 4 | Africa |
| 5247 | Dimé | Afro-Asiatic | Omotic | 5000 | Threatened | 4 | Africa |
| 5628 | Dimli | Indo-European | Indo-Iranian | 1000000 | Vulnerable | 3 | Europe |
| 6085 | Diné Bizaad (Navajo) | Athabaskan-Eyak-Tlingit | Athabaskan | 120000 | At risk | 2 | North America |
| 10465 | Dir | Afro-Asiatic | Chadic | 500 | Endangered | 5 | Africa |
| 4085 | Diuwe | Trans-New Guinea | Asmat | 100 | Endangered | 5 | Southeast Asia |
| 5726 | Diyari | Pama-Nyungan | Karnic | 12 | Severely Endangered | 6 | Australia |
| 4118 | Djabugay | Pama-Nyungan | Yidinic | 3 | Critically Endangered | 7 | Australia |
| 5556 | Djabwurrung | Pama-Nyungan | Kulinic | 7 | Critically Endangered | 7 | Australia |
| 4087 | Djangun | Pama-Nyungan | Yalandyic | 0 | Dormant | 9 | Australia |
| 5548 | Djinang | Pama-Nyungan | Yolngu | 200 | Endangered | 5 | Australia |
| 4086 | Djinba | Pama-Nyungan | Yolngu | 75 | Severely Endangered | 6 | Australia |
| 6229 | Djuwarliny | Pama-Nyungan | Ngumpin-Yapa | Critically Endangered | 7 | Australia | |
| 5063 | Doe | Niger-Congo | Atlantic-Congo | 24000 | Vulnerable | 3 | Africa |
| 2147 | Doga | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Pacific |
| 2159 | Dogrib | Athabaskan-Eyak-Tlingit | Athabaskan | 2470 | Endangered | 5 | North America |
| 8737 | Dogul Dom | Niger-Congo | Dogon | 15700 | Vulnerable | 3 | Africa |
| 5011 | Doka | Niger-Congo | Atlantic-Congo | 11400 | Vulnerable | 3 | Africa |
| 3403 | Doko-Uyanga | Niger-Congo | Atlantic-Congo | 200 | Endangered | 5 | Africa |
| 2213 | Dolgan | Turkic | Siberian Turkic | 5500 | Threatened | 4 | Caucasus; Europe; East Asia |
| 4105 | Dolpo | Sino-Tibetan | Bodish | 5000 | Threatened | 4 | South Asia |
| 4092 | Domaaki | Indo-European | Indo-Iranian | 350 | Severely Endangered | 6 | South Asia |
| 5083 | Dombe | Niger-Congo | Atlantic-Congo | 5430 | Threatened | 4 | Africa |
| 3745 | Dompo | Niger-Congo | Atlantic-Congo | 65 | Severely Endangered | 6 | Africa |
| 1485 | Dondo | Austronesian | Malayo-Polynesian | 13000 | Threatened | 4 | Southeast Asia |
| 461 | Dong | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 1209 | Dongxiang | Mongolic | Shirongolic | 200000 | Vulnerable | 3 | East Asia |
| 2427 | Dorig | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 1486 | Doutai | Lakes Plain | 70 | Severely Endangered | 6 | Southeast Asia | |
| 1359 | Drung | Sino-Tibetan | Nungish | 7000 | Vulnerable | 3 | East Asia |
| 1986 | Duano' | Austronesian | Malayo-Polynesian | Endangered | 5 | Southeast Asia | |
| 1487 | Dubu | Pauwasi | 130 | Endangered | 5 | Southeast Asia | |
| 3196 | Dukha | Turkic | Siberian Turkic | 150 | Endangered | 5 | East Asia |
| 308 | Dulbu | Niger-Congo | Atlantic-Congo | 80 | Severely Endangered | 6 | Africa |
| 4113 | Dumi | Sino-Tibetan | Kiranti | 8 | Critically Endangered | 7 | South Asia |
| 4094 | Dumpas | Austronesian | Malayo-Polynesian | 1100 | Endangered | 5 | Southeast Asia |
| 2157 | Dumun | Trans-New Guinea | Madang | 40 | Severely Endangered | 6 | Pacific |
| 4096 | Dungan | Sino-Tibetan | Sinitic | 100000 | Vulnerable | 3 | Near East |
| 5323 | Dungmali | Sino-Tibetan | Kiranti | 4609 | Threatened | 4 | South Asia |
| 5012 | Dungu | Niger-Congo | Atlantic-Congo | 1100 | Threatened | 4 | Africa |
| 10625 | Duoxu | Sino-Tibetan | Tibeto-Burman | 9 | Critically Endangered | 7 | East Asia |
| 961 | Dupaninan Agta | Austronesian | Malayo-Polynesian | 1400 | Threatened | 4 | Southeast Asia |
| 1488 | Duriankere | Trans-New Guinea | South Bird's Head | 30 | Severely Endangered | 6 | Southeast Asia |
| 4952 | Duruwa | Dravidian | Central Dravidian | 51200 | Vulnerable | 3 | South Asia |
| 1513 | Dusner | Austronesian | Malayo-Polynesian | 6 | Critically Endangered | 7 | Southeast Asia |
| 7354 | Dutch Sign Language | Sign Language | European | 20000 | Vulnerable | 3 | Europe |
| 5727 | Duungidjawu | Pama-Nyungan | Waka-Kabic | 0 | Dormant | 9 | Australia |
| 2161 | Duwet | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 4619 | Dwang | Niger-Congo | Atlantic-Congo | 8200 | Threatened | 4 | Africa |
| 1458 | Dyapá | Harakmbut-Katukinan | Katukinan | 1650 | Threatened | 4 | South America |
| 10450 | Dyarim | Afro-Asiatic | Chadic | 100 | Severely Endangered | 6 | Africa |
| 504 | Dyirbal | Pama-Nyungan | Dyirbalic | 6 | Critically Endangered | 7 | Australia |
| 4601 | Dzando | Niger-Congo | Atlantic-Congo | 6000 | Threatened | 4 | Africa |
| 3157 | E'ma Buyang | Tai-Kadai | Kadai | 300 | Endangered | 5 | East Asia |
| 2165 | East Cree | Algic | Algonquian | 12000 | Vulnerable | 3 | North America |
| 1208 | East Yugur | Mongolic | Shirongolic | 4000 | Vulnerable | 3 | East Asia |
| 10529 | Eastern Alta Mixtec | Otomanguean | Mixtecan | 24244 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 5248 | Eastern and Central Arrernte | Pama-Nyungan | Arandic | 3820 | Threatened | 4 | Australia |
| 3971 | Eastern Bru | Austro-Asiatic | Katuic | 82300 | Vulnerable | 3 | Southeast Asia |
| 4006 | Eastern Buryat | Mongolic | Common Mongolic | 300000 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 4173 | Eastern Cham | Austronesian | Malayo-Polynesian | 100000 | Vulnerable | 3 | Southeast Asia |
| 1749 | Eastern Chatino | Otomanguean | Zapotecan | 1000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 4207 | Eastern Gurung | Sino-Tibetan | Tamangic | 325000 | Threatened | 4 | South Asia |
| 8552 | Eastern Khanty | Uralic | Khanty | 480 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 8530 | Eastern Mansi | Uralic | Mansi | 500 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 3203 | Eastern Mari | Uralic | Mari | 500000 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 4127 | Eastern Meohang | Sino-Tibetan | Kiranti | 904 | Severely Endangered | 6 | South Asia |
| 3885 | Eastern Nahua | Uto-Aztecan | Southern Uto-Aztecan | 125000 | At risk | 2 | Mexico, Central America, Caribbean |
| 4915 | Eastern Ojibwe | Algic | Algonquian | 1500 | Threatened | 4 | North America |
| 1127 | Eastern Penan | Austronesian | Malayo-Polynesian | 10000 | Threatened | 4 | Southeast Asia |
| 863 | Eastern Pomo | Pomoan | 0 | Dormant | 9 | North America | |
| 3211 | Eastern Yiddish | Indo-European | Germanic | 1200000 | At risk | 2 | North America; Europe; Near East |
| 8594 | Ebughu | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 7109 | Ecuadorian Sign Language | Sign Language | South American | 231000 | At risk | 2 | South America |
| 2174 | Eel River Athabaskan | Athabaskan-Eyak-Tlingit | Athabaskan | 0 | Dormant | 9 | North America |
| 1456 | Effutu | Niger-Congo | Atlantic-Congo | 20000 | Threatened | 4 | Africa |
| 341 | Ega | Niger-Congo | Atlantic-Congo | 1000 | Severely Endangered | 6 | Africa |
| 4120 | Eitiep | Torricelli | Kombian | 394 | Endangered | 5 | Pacific |
| 7712 | Ejamat | Niger-Congo | Atlantic-Congo | 37500 | Vulnerable | 3 | Africa |
| 8589 | Ekit | Niger-Congo | Atlantic-Congo | 200000 | Vulnerable | 3 | Africa |
| 4122 | El Hugeirat | Nubian | 50 | Severely Endangered | 6 | Africa | |
| 4124 | El Molo | Afro-Asiatic | Cushitic | Dormant | 9 | Africa | |
| 10572 | Elepi | Torricelli | Marienberg Hills | 149 | Endangered | 5 | Pacific |
| 10541 | Elkei | Torricelli | Wapei | 1640 | Threatened | 4 | Pacific |
| 10679 | Elseng | Isolate | Pacific | 300 | Endangered | 5 | Southeast Asia |
| 4126 | Elu | Austronesian | Malayo-Polynesian | 220 | Endangered | 5 | Pacific |
| 5511 | Emae | Austronesian | Malayo-Polynesian | 400 | Endangered | 5 | Pacific |
| 546 | Eman | Niger-Congo | Atlantic-Congo | 800 | Endangered | 5 | Africa |
| 2665 | Emberá-Catío | Chocoan | 88747 | Vulnerable | 3 | South America; Mexico, Central America, Caribbean | |
| 2598 | Emerillon | Tupian | Tupi-Guaranian | 400 | Endangered | 5 | South America |
| 1905 | Emmi | Western Daly | 18 | Critically Endangered | 7 | Australia | |
| 1759 | Emplawas | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Southeast Asia |
| 10700 | Emumu | Pauwasi | 1100 | Threatened | 4 | Southeast Asia | |
| 1437 | En | Tai-Kadai | Kadai | 200 | Endangered | 5 | Southeast Asia; East Asia |
| 2054 | Enawené-Nawé | Arawakan | 445 | Endangered | 5 | South America | |
| 2141 | Enenlhet | Enlhet-Enenlhet (Mascoyan) | 1275 | Threatened | 4 | South America | |
| 1760 | Enggano | Austronesian | Malayo-Polynesian | 1000 | Threatened | 4 | Southeast Asia |
| 4490 | Enlhet Norte | Enlhet-Enenlhet (Mascoyan) | 7500 | Threatened | 4 | South America | |
| 8599 | Enwan | Niger-Congo | Atlantic-Congo | 15000 | Vulnerable | 3 | Africa |
| 5166 | Enxet Sur | Enlhet-Enenlhet (Mascoyan) | 3842 | Threatened | 4 | South America | |
| 6684 | Eora | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 5377 | Epena | Chocoan | 88800 | Vulnerable | 3 | South America; Mexico, Central America, Caribbean | |
| 4131 | Erohwa | Niger-Congo | Atlantic-Congo | 850 | Severely Endangered | 6 | Africa |
| 1761 | Erokwanas | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Southeast Asia |
| 4132 | Erre | Giimbiyu | 1 | Critically Endangered | 7 | Australia | |
| 4133 | Ersu | Sino-Tibetan | Tibeto-Burman | 13000 | Threatened | 4 | East Asia |
| 3207 | Erzya | Uralic | Mordvin | 250000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 1467 | Ese'jja | Pano-Tacanan | Chama | 518 | Endangered | 5 | South America |
| 5205 | Gaa | Niger-Congo | Atlantic-Congo | 10000 | Threatened | 4 | Africa |
| 2309 | Gadang | Afro-Asiatic | Chadic | 2500 | Threatened | 4 | Africa |
| 4193 | Gaddi | Indo-European | Indo-Iranian | 120000 | At risk | 2 | South Asia |
| 3406 | Gagauz | Turkic | Oghuz | 200000 | Vulnerable | 3 | Europe |
| 4195 | Gagudju | Isolate | 0 | Dormant | 9 | Australia | |
| 1612 | Gahri | Sino-Tibetan | Tibeto-Kanauri | 3750 | Threatened | 4 | South Asia |
| 10611 | Gaikundi | Sepik | Ndu | 650 | Endangered | 5 | Pacific |
| 4200 | Gajirrabeng | Jarrakan | 3 | Critically Endangered | 7 | Australia | |
| 3412 | Gallo | Indo-European | Italic | 300000 | Threatened | 4 | Europe |
| 5363 | Gallurese Sardinian | Indo-European | Italic | 100000 | At risk | 2 | Europe |
| 5631 | Galo | Sino-Tibetan | Tani | 35000 | Vulnerable | 3 | South Asia |
| 9169 | Galoli | Austronesian | Malayo-Polynesian | 13000 | Vulnerable | 3 | Pacific |
| 10548 | Galu | Torricelli | Wapei | 208 | Endangered | 5 | Pacific |
| 4378 | Gamale Kham | Sino-Tibetan | Magaric | 30000 | Vulnerable | 3 | South Asia |
| 4227 | Gamberre | Worrorran | Northern Worrorran | 6 | Critically Endangered | 7 | Australia |
| 4403 | Gamilaraay | Pama-Nyungan | Wiradhuric | Critically Endangered | 7 | Australia | |
| 4235 | Gana | Austronesian | Malayo-Polynesian | 1000 | Endangered | 5 | Southeast Asia |
| 4197 | Ganggalida | Tangkic | 1 | Critically Endangered | 7 | Australia | |
| 4230 | Gangte | Sino-Tibetan | Kukish | 15100 | Vulnerable | 3 | South Asia; Southeast Asia |
| 4612 | Ganjulé | Afro-Asiatic | Omotic | 50 | Severely Endangered | 6 | Africa |
| 8198 | Gansu Bonan | Mongolic | Shirongolic | 12500 | Threatened | 4 | East Asia |
| 4610 | Ganza | Afro-Asiatic | Omotic | 5400 | Threatened | 4 | Africa |
| 562 | Ganzi | Niger-Congo | Atlantic-Congo | 1400 | Threatened | 4 | Africa |
| 5509 | Gao | Austronesian | Malayo-Polynesian | 900 | Threatened | 4 | Pacific |
| 1511 | Gao Gelao | Tai-Kadai | Kadai | 6000 | Severely Endangered | 6 | East Asia |
| 946 | Gardiol | Indo-European | Italic | 300 | Severely Endangered | 6 | Europe |
| 5632 | Garhwali | Indo-European | Indo-Iranian | 2920000 | Vulnerable | 3 | South Asia |
| 3472 | Garífuna | Arawakan | Northern Arawakan | 100000 | At risk | 2 | Mexico, Central America, Caribbean |
| 4256 | Gawar-Bati | Indo-European | Indo-Iranian | 9000 | Vulnerable | 3 | South Asia; Near East |
| 6680 | Gayiri | Pama-Nyungan | Maric | 0 | Dormant | 9 | Australia |
| 4262 | Gazi | Indo-European | Indo-Iranian | 7030 | Threatened | 4 | Near East |
| 4598 | Gbanziri | Niger-Congo | Atlantic-Congo | 17500 | Vulnerable | 3 | Africa |
| 5059 | Gbaya | Kresh-Aja | Vulnerable | 3 | Africa | ||
| 5995 | Gbayi | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 4793 | Gbii | Niger-Congo | Atlantic-Congo | 5600 | Threatened | 4 | Africa |
| 1764 | Gebe | Austronesian | Malayo-Polynesian | 2650 | Threatened | 4 | Southeast Asia |
| 2346 | Geji | Afro-Asiatic | Chadic | 1000 | Threatened | 4 | Africa |
| 563 | Geme | Niger-Congo | Atlantic-Congo | 550 | Endangered | 5 | Africa |
| 4203 | Geruma | Afro-Asiatic | Chadic | 4700 | Threatened | 4 | Africa |
| 9089 | Geviya | Niger-Congo | Atlantic-Congo | 400 | Severely Endangered | 6 | Africa |
| 291 | Ghadamès | Afro-Asiatic | Berber | 4000 | Threatened | 4 | Africa |
| 2314 | Ghodoberi | Northeast Caucasian | Daghestanian | 3250 | Endangered | 5 | Caucasus; Europe; East Asia |
| 8469 | Ghomara | Afro-Asiatic | Berber | 10000 | Threatened | 4 | Africa |
| 4211 | Gibanawa | Pidgin or Creole | Hausa based | Africa | |||
| 5712 | Girramay | Pama-Nyungan | Dyirbalic | 10 | Severely Endangered | 6 | Australia |
| 6780 | Githabul | Pama-Nyungan | Bandjalangic | Awakening | 8 | Australia | |
| 4213 | Gitsenimx̱ | Tsimshian | 523 | Severely Endangered | 6 | North America | |
| 4214 | Giyug | Unclassified | Wagaydyic? | 2 | Critically Endangered | 7 | Australia |
| 7369 | Gizrra | Eastern Trans-Fly | 1050 | Threatened | 4 | Pacific | |
| 10549 | Gnau | Torricelli | Wapei | 980 | Endangered | 5 | Pacific |
| 6781 | Golpa | Pama-Nyungan | Yolngu | Severely Endangered | 6 | Australia | |
| 5636 | Gongduk | Sino-Tibetan | 1000 | Threatened | 4 | South Asia | |
| 401 | Gooniyandi | Bunaban | 100 | Severely Endangered | 6 | Australia | |
| 1765 | Gorap | Austronesian | Malayo-Polynesian | 1000 | Endangered | 5 | Southeast Asia |
| 6782 | Goreng | Pama-Nyungan | Nyungic | Awakening | 8 | Australia | |
| 2218 | Gorovu | Lower Sepik-Ramu | Ramu | 20 | Critically Endangered | 7 | Pacific |
| 4953 | Gorum | Austro-Asiatic | Munda | 3375 | Endangered | 5 | South Asia |
| 571 | Goundo | Niger-Congo | Atlantic-Congo | 25 | Critically Endangered | 7 | Africa |
| 4255 | Gowro | Indo-European | Indo-Iranian | 1000 | Threatened | 4 | South Asia |
| 4239 | Gozarkhani | Indo-European | Indo-Iranian | Near East | |||
| 4878 | Grangali | Indo-European | Indo-Iranian | 5000 | Threatened | 4 | Near East |
| 2226 | Grass Koiari | Trans-New Guinea | Koiarian | 1700 | Threatened | 4 | Pacific |
| 1510 | Green Gelao | Tai-Kadai | Kadai | 6000 | Severely Endangered | 6 | Southeast Asia; East Asia |
| 10922 | Griko | Outlying dialect of Modern Greek | 20500 | Severely Endangered | 6 | ||
| 2440 | Gros Ventre | Algic | Algonquian | Awakening | 8 | North America | |
| 4186 | Gta' | Austro-Asiatic | Munda | 3000 | Threatened | 4 | South Asia |
| 2692 | Guajá | Tupian | Tupi-Guaranian | 283 | Endangered | 5 | South America |
| 2694 | Guajajára | Tupian | Tupi-Guaranian | 14000 | Vulnerable | 3 | South America |
| 2672 | Guajibo | Guajiboan | 35006 | Vulnerable | 3 | South America | |
| 2696 | Guajiro | Arawakan | Northern Arawakan | 312730 | Vulnerable | 3 | South America |
| 2545 | Guamaca | Chibchan | Magdalenic | 1922 | Threatened | 4 | South America |
| 2697 | Guambiano | Barbacoan | Northern Barbacoan | 23462 | Vulnerable | 3 | South America |
| 509 | Guana (Brazil) | Arawakan | Southern Arawakan | 0 | Dormant | 9 | South America |
| 2698 | Guana (Paraguay) | Mascoyan | 4 | Critically Endangered | 7 | South America | |
| 3163 | Guarayu | Tupian | Tupi-Guaranian | 8433 | Threatened | 4 | South America |
| 1951 | Guarequena | Arawakan | Northern Arawakan | 180 | Endangered | 5 | South America |
| 6203 | Guarijío | Uto-Aztecan | Southern Uto-Aztecan | 2136 | Threatened | 4 | Mexico, Central America, Caribbean |
| 7110 | Guatemalan Sign Language | Sign Language | Mexican, Central American, or Caribbean | 142000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2894 | Guató | Isolate | South American | 5 | Critically Endangered | 7 | South America |
| 4246 | Guatuso | Chibchan | Votic | 276 | Endangered | 5 | Mexico, Central America, Caribbean |
| 2898 | Guayabero | Guajiboan | 1118 | Threatened | 4 | South America | |
| 6200 | Guaymí | Chibchan | Isthmic | 147623 | At risk | 2 | Mexico, Central America, Caribbean |
| 6195 | Guazacapán Xinka | Xincan | 0 | Dormant | 9 | Mexico, Central America, Caribbean | |
| 6779 | Gubbi Gubbi | Pama-Nyungan | Waka-Kabic | 0 | Dormant | 9 | Australia |
| 3325 | Gudjal | Pama-Nyungan | Maric | Awakening | 8 | Australia | |
| 1863 | Guernésiais | Indo-European | Italic | 250 | Endangered | 5 | Europe |
| 2905 | Guerrero Amuzgo | Otomanguean | Amuzgoan | Vulnerable | 3 | Mexico, Central America, Caribbean | |
| 10530 | Guerrero Mixtec | Otomanguean | Mixtecan | 97200 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4199 | Gugu-Badhun | Pama-Nyungan | Maric | 2 | Critically Endangered | 7 | Australia |
| 6609 | Gugu-Warra | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 5611 | Guiqiong | Sino-Tibetan | Qiangic | 9677 | Endangered | 5 | East Asia |
| 4382 | Gumbaynggir | Pama-Nyungan | Gumbaynggiric | 40 | Severely Endangered | 6 | Australia |
| 6035 | Gundi | Niger-Congo | Atlantic-Congo | 9000 | Threatened | 4 | Africa |
| 4249 | Gurmana | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 5226 | Gurr-goni | Maningrida | 20 | Critically Endangered | 7 | Australia | |
| 4240 | Guruntum | Afro-Asiatic | Chadic | Vulnerable | 3 | Africa | |
| 7717 | Gusilay | Niger-Congo | Atlantic-Congo | 17500 | Vulnerable | 3 | Africa |
| 5620 | Gutob | Austro-Asiatic | Munda | 8000 | Endangered | 5 | South Asia |
| 5825 | Guugu-Yimidhirr | Pama-Nyungan | Yalandyic | 20 | Severely Endangered | 6 | Australia |
| 10495 | Guus | Afro-Asiatic | Chadic | 7000 | Threatened | 4 | Africa |
| 6784 | Guwa | Pama-Nyungan | Maric | 0 | Dormant | 9 | Australia |
| 4257 | Guwamu | Pama-Nyungan | Maric | 1 | Critically Endangered | 7 | Australia |
| 4215 | Guya | Trans-New Guinea | Finisterre-Huon | 130 | Endangered | 5 | Pacific |
| 3902 | Gwamhi-Wuri | Niger-Congo | Atlantic-Congo | 16000 | Vulnerable | 3 | Africa |
| 2217 | Gweda | Austronesian | Malayo-Polynesian | 26 | Severely Endangered | 6 | Pacific |
| 4254 | Gweno | Niger-Congo | Atlantic-Congo | Threatened | 4 | Africa | |
| 2441 | Gwich'in | Athabaskan-Eyak-Tlingit | Dene (Athabaskan) | 550 | Severely Endangered | 6 | North America |
| 10421 | Gyalsumdo | Sino-Tibetan | Tibeto-Burman | 350 | Threatened | 4 | South Asia |
| 583 | Gyele | Niger-Congo | Atlantic-Congo | 3600 | Endangered | 5 | Africa |
| 4259 | Gyem | Niger-Congo | Atlantic-Congo | 100 | Endangered | 5 | Africa |
| 1766 | Habu | Austronesian | Malayo-Polynesian | 2700 | Threatened | 4 | Pacific |
| 10378 | Hachijo | Japonic | Japanese | 8000 | Endangered | 5 | East Asia |
| 605 | Hadza | Isolate | African | 950 | Threatened | 4 | Africa |
| 3595 | Haeke | Austronesian | Malayo-Polynesian | 100 | Severely Endangered | 6 | Pacific |
| 10310 | Hahon | Austronesian | Malayo-Polynesian | 3000 | Vulnerable | 3 | Pacific |
| 7181 | Hai Phong Sign Language | Sign Language | Southeast Asian | 1800 | Endangered | 5 | Southeast Asia |
| 2377 | Hailhzaqvla (Heiltsuk) | Wakashan | Northern Wakashan | 39 | Critically Endangered | 7 | North America |
| 5637 | Hakha Chin | Sino-Tibetan | Kukish | Threatened | 4 | South Asia; Southeast Asia | |
| 2379 | Halq'eméylem (Halkomelem) | Salishan | Central Salish | 93 | Severely Endangered | 6 | North America |
| 7969 | Hamer-Bana-Kara | Afro-Asiatic | Omotic | 42800 | Vulnerable | 3 | Africa |
| 2092 | Han | Athabaskan-Eyak-Tlingit | Athabaskan | 9 | Critically Endangered | 7 | North America |
| 4620 | Hanga | Niger-Congo | Atlantic-Congo | 6800 | Threatened | 4 | Africa |
| 4057 | Hanis | Coosan | 0 | Dormant | 9 | North America | |
| 7182 | Hanoi Sign Language | Sign Language | Southeast Asian | 39000 | Endangered | 5 | Southeast Asia |
| 5170 | Harakmbut | Harakmbut-Katukinan | Harakmbut | 1206 | Threatened | 4 | South America |
| 2442 | Hare | Athabaskan-Eyak-Tlingit | Athabaskan | 75 | Severely Endangered | 6 | North America |
| 4281 | Ḥarsusi | Afro-Asiatic | Semitic | 700 | Endangered | 5 | Near East |
| 10685 | Haruai | Piawi | 100 | Endangered | 5 | Pacific | |
| 4279 | Harzani | Indo-European | Indo-Iranian | 28100 | Vulnerable | 3 | Near East |
| 485 | Hasha | Niger-Congo | Atlantic-Congo | 400 | Endangered | 5 | Africa |
| 2713 | Hatam | Isolate | Pacific | 16000 | Vulnerable | 3 | Southeast Asia |
| 7489 | Hausa Sign Language | Sign Language | African | Africa | |||
| 4291 | Haveke | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 4275 | Hawai'i Sign Language | Sign Language | Pacific | 30 | Critically Endangered | 7 | North America |
| 125 | Hawaiian | Austronesian | Malayo-Polynesian | 300 | Severely Endangered | 6 | North America |
| 9170 | Hawu | Austronesian | Malayo-Polynesian | 100000 | At risk | 2 | Southeast Asia |
| 5710 | Helambu Sherpa | Sino-Tibetan | Bodish | 9842 | Threatened | 4 | South Asia |
| 1747 | Helong | Austronesian | Malayo-Polynesian | 14000 | Vulnerable | 3 | Southeast Asia |
| 10431 | Herero | Niger-Congo | Atlantic-Congo | 24500 | Vulnerable | 3 | Africa |
| 10626 | Hewa | Sepik | Sepik Hill | 2000 | Threatened | 4 | Pacific |
| 10558 | Heyo | Torricelli | Maimai | 1824 | Threatened | 4 | Pacific |
| 2376 | Hidatsa | Siouan | Missouri River Siouan | 100 | Critically Endangered | 7 | North America |
| 4163 | Highland Chontal | Tequistlatecan | 3413 | Threatened | 4 | Mexico, Central America, Caribbean | |
| 10851 | Highland Ecuadorian Quichua | Quechuan | Quechua IIB | 1153800 | Vulnerable | 3 | South America |
| 548 | Hijuk | Niger-Congo | Atlantic-Congo | 400 | Endangered | 5 | Africa |
| 10414 | Hill Miri | Sino-Tibetan | Tani | 10000 | Threatened | 4 | South Asia |
| 4266 | Himarimã | Unclassified (possibly Arawan?) | South America | ||||
| 61 | Himba | Niger-Congo | Atlantic-Congo | 32500 | Vulnerable | 3 | Africa |
| 4265 | Hinduri | Indo-European | Indo-Iranian | 138 | Endangered | 5 | South Asia |
| 2315 | Hinukh | Northeast Caucasian | Daghestanian | 350 | Endangered | 5 | Caucasus; Europe; East Asia |
| 4267 | Hiw | Austronesian | Malayo-Polynesian | 120 | Endangered | 5 | Pacific |
| 3219 | Hixkaryana | Cariban | Parukotoan | 600 | Endangered | 5 | South America |
| 5125 | Hlersu | Sino-Tibetan | Lolo-Burmese | 15000 | Vulnerable | 3 | East Asia |
| 5638 | Hmar | Sino-Tibetan | Kukish | 83404 | Vulnerable | 3 | South Asia |
| 4276 | Hmwaveke | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 6997 | Ho Chi Minh City Sign Language | Sign Language | Southeast Asian | 45000 | Endangered | 5 | Southeast Asia |
| 4270 | Hoava | Austronesian | Malayo-Polynesian | 2360 | Threatened | 4 | Pacific |
| 4271 | Hobyot | Afro-Asiatic | Semitic | 400 | Endangered | 5 | Near East |
| 2375 | Holikachuk | Athabaskan-Eyak-Tlingit | Athabaskan | 0 | Dormant | 9 | North America |
| 5065 | Holoholo | Niger-Congo | Atlantic-Congo | Vulnerable | 3 | Africa | |
| 10109 | Homshetsi | Indo-European | Armenian | Vulnerable | 3 | Europe; Caucasus; East Asia | |
| 4494 | Honduran Lenca | Lencan | 0 | Dormant | 9 | Mexico, Central America, Caribbean | |
| 7111 | Honduras Sign Language | Sign Language | Mexican, Central American, or Caribbean | Threatened | 4 | Mexico, Central America, Caribbean | |
| 5848 | Hõne | Niger-Congo | Atlantic-Congo | 7000 | Severely Endangered | 6 | Africa |
| 7184 | Hong Kong Sign Language | Sign Language | East Asian | 9000 | Threatened | 4 | East Asia |
| 2374 | Hopi | Uto-Aztecan | Northern Uto-Aztecan | 5000 | Threatened | 4 | North America |
| 487 | Horom | Niger-Congo | Atlantic-Congo | 1500 | Vulnerable | 3 | Africa |
| 640 | Horpa | Sino-Tibetan | Qiangic | 45000 | Vulnerable | 3 | East Asia |
| 1786 | Hoti | Austronesian | Malayo-Polynesian | 10 | Critically Endangered | 7 | Southeast Asia |
| 4273 | Hozo | Afro-Asiatic | Omotic | 3000 | Threatened | 4 | Africa |
| 4274 | Hpon | Sino-Tibetan | Lolo-Burmese | 0 | Dormant | 9 | Southeast Asia |
| 4278 | Hruso | Isolate | 3000 | Threatened | 4 | South Asia | |
| 1247 | Hu | Austro-Asiatic | Palaungic | 700 | Endangered | 5 | East Asia |
| 8115 | Huallaga Quechua | Quechuan | Quechua I | 40000 | Vulnerable | 3 | South America |
| 3278 | Huambisa | Chicham family (Jivaroan) | 8000 | Threatened | 4 | South America | |
| 2085 | Huastec | Mayan | Huastecan | 1700 | Threatened | 4 | |
| 4292 | Huave | Isolate | Mexican, Central American, or Caribbean | 12500 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 8112 | Huaylas Quechua | Quechuan | Quechua I | 336000 | Vulnerable | 3 | South America |
| 5099 | Huehuetla Tepehua | Totonacan | Tepehua | 3000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 6569 | Huichol | Uto-Aztecan | Southern Uto-Aztecan | 35724 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3277 | Huilliche | Araucanian | Severely Endangered | 6 | South America | ||
| 1787 | Hukumina | Austronesian | Malayo-Polynesian | 1 | Critically Endangered | 7 | Southeast Asia |
| 4288 | Hulaulá | Afro-Asiatic | Semitic | 9500 | Threatened | 4 | Near East |
| 1788 | Hulung | Austronesian | Malayo-Polynesian | 10 | Critically Endangered | 7 | Southeast Asia |
| 1213 | Hung | Austro-Asiatic | Vietic | 500 | Endangered | 5 | Southeast Asia |
| 5014 | Hungworo | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 2316 | Hunzib | Northeast Caucasian | Daghestanian | 700 | Endangered | 5 | Caucasus; Europe; East Asia |
| 1862 | Hupa | Athabaskan-Eyak-Tlingit | Athabaskan | 1 | Critically Endangered | 7 | North America |
| 3275 | Hupda | Nadahup | Eastern Makuan | 1500 | Threatened | 4 | South America |
| 2088 | Huzhu | Mongolic | Shirongolic | 50000 | Endangered | 5 | East Asia |
| 6038 | Hwarasa | Afro-Asiatic | Cushitic | Critically Endangered | 7 | Africa | |
| 3220 | Ikpéng | Cariban | Pekodian | 342 | Endangered | 5 | South America |
| 4299 | Ilgar | Iwaidjan | 5 | Critically Endangered | 7 | Australia | |
| 3429 | Ili Turki | Turkic | Central Asian Turkic | Critically Endangered | 7 | East Asia | |
| 4300 | Ilue | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 4302 | Imonda | Border | Waris | 274 | Endangered | 5 | Pacific |
| 10657 | Inapang | Lower Sepik-Ramu | Ramu | 1290 | Threatened | 4 | Pacific |
| 3272 | Iñapari | Arawakan | Southern Arawakan | 4 | Critically Endangered | 7 | South America |
| 3431 | Inari Saami | Uralic | Saami | 300 | Endangered | 5 | Europe |
| 4294 | Indri | Niger-Congo | Atlantic-Congo | 700 | Severely Endangered | 6 | Africa |
| 4305 | Inga | Quechuan | Quechua IIB | 8000 | Threatened | 4 | South America |
| 3239 | Kamu | Eastern Daly | 2 | Critically Endangered | 7 | Australia | |
| 10744 | Kamula | Isolate | Pacific | 800 | Endangered | 5 | Pacific |
| 3236 | Kanakanavu | Austronesian | Tsouic | 6 | Critically Endangered | 7 | East Asia |
| 10149 | Kanan | Sino-Tibetan | Kachinic | 9000 | Threatened | 4 | Southeast Asia |
| 3235 | Kanashi | Sino-Tibetan | Tibeto-Kanauri | 1400 | Threatened | 4 | South Asia |
| 2222 | Kandas | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 527 | Kande | Niger-Congo | Atlantic-Congo | 100 | Severely Endangered | 6 | Africa |
| 4354 | Kanga | Kadu | 8000 | Threatened | 4 | Africa | |
| 10654 | Kanggape | Lower Sepik-Ramu | Ramu | 930 | Endangered | 5 | Pacific |
| 1210 | Kangjia | Mongolic | Shirongolic | 377 | Severely Endangered | 6 | East Asia |
| 2223 | Kaningra | Sepik | Sepik Hill | 327 | Threatened | 4 | Pacific |
| 3366 | Kaninuwa | Austronesian | Malayo-Polynesian | 360 | Endangered | 5 | Pacific |
| 6688 | Kaniyang | Pama-Nyungan | Nyungic | Awakening | 8 | Australia | |
| 4258 | Kanowit-Tanjong | Austronesian | Malayo-Polynesian | 100 | Endangered | 5 | Southeast Asia |
| 4621 | Kantosi | Niger-Congo | Atlantic-Congo | 2300 | Threatened | 4 | Africa |
| 4604 | Kanu | Niger-Congo | Atlantic-Congo | 3500 | Threatened | 4 | Africa |
| 4444 | Kanza | Siouan | Mississippi Valley Siouan | Awakening | 8 | North America | |
| 1889 | Kao | North Halmahera | 400 | Endangered | 5 | Southeast Asia | |
| 10522 | Kap | Austronesian | Malayo-Polynesian | 2079 | Threatened | 4 | Pacific |
| 4432 | Kapingamarangi | Austronesian | Malayo-Polynesian | 3000 | Threatened | 4 | Pacific |
| 3113 | Kapixaná | Isolate | South American | 3 | Critically Endangered | 7 | South America |
| 668 | Kapong | Cariban | Venezuelan | 11550 | Vulnerable | 3 | South America |
| 1890 | Kapori | Isolate | 200 | Vulnerable | 3 | Southeast Asia | |
| 10617 | Kapriman | Sepik | Sepik Hill | 1339 | Vulnerable | 3 | Pacific |
| 4406 | Kapya | Niger-Congo | Atlantic-Congo | 200 | Endangered | 5 | Africa |
| 8089 | Kaqchikel | Mayan | K'ichean | 475889 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 7949 | Kara | Central Sudanic | Bongo-Bagirmi | 4800 | Threatened | 4 | Africa |
| 2366 | Karaim | Turkic | Kipchak | 500 | Critically Endangered | 7 | Europe |
| 1654 | Karajá | Isolate | South America | 3060 | Threatened | 4 | South America |
| 4191 | Karajarri | Pama-Nyungan | Marrngu | 12 | Critically Endangered | 7 | Australia |
| 2961 | Kreen-Akarore | Jean | Northern Je | 250 | Endangered | 5 | South America |
| 3086 | Krenak | Krenakan | 10 | Severely Endangered | 6 | South America | |
| 2670 | Kreye | Jean | Northern Je | 496 | Endangered | 5 | South America |
| 5884 | Kri | Austro-Asiatic | Vietic | 250 | Severely Endangered | 6 | Southeast Asia |
| 2671 | Krikatí | Jean | Northern Je | 682 | Endangered | 5 | South America |
| 365 | Krim | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 4381 | Krongo | Kadu | 21700 | Vulnerable | 3 | Africa | |
| 4439 | Kru'ng 2 | Austro-Asiatic | Bahnaric | 18400 | Vulnerable | 3 | Southeast Asia |
| 1739 | Krymchak | Turkic | Kipchak | 200 | Critically Endangered | 7 | Caucasus; Europe |
| 2508 | Kryts | Northeast Caucasian | Daghestanian | 5000 | Endangered | 5 | Caucasus |
| 10681 | Mian | Trans-New Guinea | Ok | 1750 | Threatened | 4 | Pacific |
| 1755 | Michif | Mixed Language | French-Cree | 200 | Critically Endangered | 7 | North America |
| 2305 | Midah | Afro-Asiatic | Chadic | 1000 | Threatened | 4 | Africa |
| 1751 | Middle Chulym | Turkic | South Siberian | 50 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 3465 | Middle Southeastern Chinantec | Otomanguean | Chinantecan | 77087 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 7591 | Midland Mixe | Mixe-Zoquean | Mixean | 10500 | Threatened | 4 | Mexico, Central America, Caribbean |
| 5639 | Miju-Mishmi | Sino-Tibetan | Midzu | 9000 | Threatened | 4 | South Asia; East Asia |
| 1666 | Mikasuki | Muskogean | 500 | Threatened | 4 | North America | |
| 1378 | Milang | Unclassified | 2150 | Vulnerable | 3 | South Asia | |
| 579 | Miltu | Afro-Asiatic | Chadic | 300 | Endangered | 5 | Africa |
| 590 | Naro | Khoe | Kalahari | 10000 | Vulnerable | 3 | Africa |
| 2554 | Narungga | Pama-Nyungan | Thura-Yura | 24 | Severely Endangered | 6 | Australia |
| 10718 | Nasal | Isolate | Austronesian | 3000 | Vulnerable | 3 | Southeast Asia |
| 3068 | Nasarian | Austronesian | Malayo-Polynesian | 20 | Critically Endangered | 7 | Pacific |
| 10789 | Nasvang | Austronesian | Malayo-Polynesian | 275 | Endangered | 5 | Pacific |
| 4899 | Natanzi | Indo-European | Indo-Iranian | 7030 | Threatened | 4 | Near East |
| 10858 | Natchez | Unclassified | Awakening | 8 | North America | ||
| 2512 | Nāti | Austronesian | Malayo-Polynesian | 25 | Severely Endangered | 6 | Pacific |
| 3816 | Natioro | Niger-Congo | Atlantic-Congo | 4000 | Vulnerable | 3 | Africa |
| 2723 | Nauete | Austronesian | Malayo-Polynesian | 1000 | Endangered | 5 | Pacific |
| 1714 | Naukan Yupik | Eskimo-Aleut | Eskimo | 200 | Endangered | 5 | Caucasus; Europe; East Asia |
| 2370 | Nauna | Austronesian | Malayo-Polynesian | 100 | Severely Endangered | 6 | Pacific |
| 3570 | Nauru Pacific Pidgin | Pidgin or Creole | English based | Threatened | 4 | Pacific | |
| 3066 | Nauruan | Austronesian | Malayo-Polynesian | 6000 | Threatened | 4 | Pacific |
| 3065 | Navwien | Austronesian | Malayo-Polynesian | 5 | Critically Endangered | 7 | Pacific |
| 4906 | Nawaru | Trans-New Guinea | Yareban | 190 | Endangered | 5 | Pacific |
| 2680 | Nayi | Afro-Asiatic | Omotic | 7188 | Severely Endangered | 6 | Africa |
| 4909 | Nayini | Indo-European | Indo-Iranian | 7030 | Threatened | 4 | Near East |
| 4622 | Nchumbulu | Niger-Congo | Atlantic-Congo | 1800 | Threatened | 4 | Africa |
| 1457 | Ingrian | Uralic | Finnic | 130 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 3697 | Inter-Zab Jewish Neo-Aramaic | Afro-Asiatic | Semitic | Severely Endangered | 6 | Near East | |
| 2063 | Inuit Sign Language | Sign Language | North American | 40 | Severely Endangered | 6 | North America |
| 6449 | Inuktitut | Eskimo-Aleut | Eskimo | 30000 | Vulnerable | 3 | North America |
| 2369 | Inupiaq | Eskimo-Aleut | Eskimo | 26644 | Severely Endangered | 6 | North America |
| 4306 | Ipiko | Trans-New Guinea | Inland Gulf | 200 | Endangered | 5 | Pacific |
| 2026 | Iquito | Zaparoan | 14 | Critically Endangered | 7 | South America | |
| 3271 | Irantxe | Isolate | South American | 90 | Severely Endangered | 6 | South America |
| 10457 | Iraya | Austronesian | Malayo-Polynesian | 10000 | Vulnerable | 3 | Southeast Asia |
| 1790 | Iresim | Austronesian | Malayo-Polynesian | 70 | Severely Endangered | 6 | Southeast Asia |
| 3437 | Irish | Indo-European | Celtic | 30000 | Endangered | 5 | Europe |
| 5625 | Irula | Dravidian | South Dravidian | 5000 | Threatened | 4 | South Asia |
| 5068 | Isanzu | Niger-Congo | Atlantic-Congo | 32400 | Vulnerable | 3 | Africa |
| 2831 | Isarog Agta | Austronesian | Malayo-Polynesian | 6 | Critically Endangered | 7 | Southeast Asia |
| 4308 | Isconahua | Pano-Tacanan | Mainline | 5 | Critically Endangered | 7 | South America |
| 5855 | Ishkashimi | Indo-European | Indo-Iranian | 2500 | Threatened | 4 | Near East |
| 10458 | Isinay | Austronesian | Malayo-Polynesian | Critically Endangered | 7 | Southeast Asia | |
| 1806 | Isirawa | Unclassified | Kwerbic? | 1800 | Threatened | 4 | Southeast Asia |
| 5152 | Isolado do Tanaru | Unclassified | Tupían? | 1 | Critically Endangered | 7 | South America |
| 1061 | Isthmus Zapotec | Otomanguean | Zapotecan | 80000 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3440 | Istriot | Indo-European | Italic | 400 | Severely Endangered | 6 | Europe |
| 3442 | Istro Romanian | Indo-European | Italic | 300 | Endangered | 5 | Europe |
| 4311 | Isu (Northwest Region, Cameroon) | Niger-Congo | Atlantic-Congo | 10400 | Vulnerable | 3 | Africa |
| 549 | Isubu | Niger-Congo | Atlantic-Congo | 800 | Endangered | 5 | Africa |
| 1062 | Itelmen | Chukotko-Kamchatkan | Kamchatkan | 20 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 2911 | Itene | Chapacuran | Central Chapacuran | 44 | Severely Endangered | 6 | South America |
| 4312 | Iteri | Left May | 447 | Endangered | 5 | Pacific | |
| 1807 | Itik | Orya-Tor | Tor | 80 | Severely Endangered | 6 | Southeast Asia |
| 2914 | Itonama | Isolate | South American | 1 | Critically Endangered | 7 | South America |
| 8600 | Itu Mbon Uzo | Niger-Congo | Atlantic-Congo | 10000 | Threatened | 4 | Africa |
| 2996 | Itza' | Mayan | Yucatecan | 12 | Severely Endangered | 6 | Mexico, Central America, Caribbean |
| 981 | Iwaidja | Iwaidjan | 150 | Endangered | 5 | Australia | |
| 10687 | Iwur | Trans-New Guinea | Ok | 1000 | Threatened | 4 | Southeast Asia |
| 2057 | Ixcatec | Otomanguean | Popolocan | 9 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 4314 | Ixil | Mayan | Mamean | 69137 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4939 | Ixtenco Otomí | Otomanguean | Otopamean | 740 | Endangered | 5 | Mexico, Central America, Caribbean |
| 8749 | Ixtlán | Otomanguean | Zapotecan | 12900 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 558 | Iyasa | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 550 | Iyive | Niger-Congo | Atlantic-Congo | 1000 | Endangered | 5 | Africa |
| 7934 | Izon | Niger-Congo | Ijoid | 1000000 | At risk | 2 | Africa |
| 5046 | Izora | Niger-Congo | Atlantic-Congo | 425 | Endangered | 5 | Africa |
| 4115 | Jabirr-Jabirr | Nyulnyulan | Western Nyulnyulan | Dormant | 9 | Australia | |
| 4338 | Jaunsari | Indo-European | Indo-Iranian | 96995 | Vulnerable | 3 | South Asia |
| 1808 | Javindo | Pidgin or Creole | Dutch based | Critically Endangered | 7 | Southeast Asia | |
| 4090 | Jawi | Nyulnyulan | Western Nyulnyulan | 3 | Critically Endangered | 7 | Australia |
| 2027 | Jawoyn | Gunwinyguan | 100 | Critically Endangered | 7 | Australia | |
| 2310 | Jaya | Central Sudanic | Bongo-Bagirmi | 2200 | Threatened | 4 | Africa |
| 10415 | Jejara | Sino-Tibetan | Aoic | 1460 | Vulnerable | 3 | Southeast Asia |
| 8409 | Jejueo | Koreanic | 7500 | Endangered | 5 | East Asia | |
| 2300 | Jemez | Kiowa-Tanoan | Tanoan | 3000 | Threatened | 4 | North America |
| 362 | Jeri Kuo | Niger-Congo | Mande | 1500 | Severely Endangered | 6 | Africa |
| 8649 | Jèrriais | Indo-European | Italic | 2874 | Threatened | 4 | Europe |
| 5588 | Jerung | Sino-Tibetan | Kiranti | 271 | Endangered | 5 | South Asia |
| 3506 | Jewish Azerbaijani Neo-Aramaic | Afro-Asiatic | Semitic | 4450 | Threatened | 4 | Caucasus; Near East |
| 1865 | Jiba | Niger-Congo | Atlantic-Congo | 1500 | Threatened | 4 | Africa |
| 5367 | Jibbali | Afro-Asiatic | Semitic | 5000 | Threatened | 4 | Near East |
| 10921 | Jibyal | West Chadic A3 group | 1501 | Vulnerable | 3 | ||
| 2299 | Jicarilla Apache | Athabaskan-Eyak-Tlingit | Athabaskan | 300 | Endangered | 5 | North America |
| 4325 | Jilbe | Afro-Asiatic | Chadic | 2000 | Threatened | 4 | Africa |
| 4327 | Jimi (Cameroon) | Afro-Asiatic | Chadic | 3000 | Threatened | 4 | Africa |
| 4335 | Jimi (Nigeria) | Afro-Asiatic | Chadic | 1000 | Severely Endangered | 6 | Africa |
| 3797 | Jingulu | Mirndi | 10 | Severely Endangered | 6 | Australia | |
| 1328 | Jiongnai Bunu | Hmong-Mien | Hmongic | Threatened | 4 | East Asia | |
| 4340 | Jirel | Sino-Tibetan | Bodish | 4919 | Threatened | 4 | South Asia |
| 4088 | Jiwarli | Pama-Nyungan | Mantharta | 0 | Dormant | 9 | Australia |
| 8009 | Jola-Fonyi | Niger-Congo | Atlantic-Congo | 413490 | At risk | 2 | Africa |
| 572 | Jonkor Bourmataguil | Afro-Asiatic | Chadic | 1500 | Threatened | 4 | Africa |
| 2902 | Jotí | Isolate | South America | 767 | Endangered | 5 | South America |
| 10722 | Jowshaqani | Indo-European | Indo-Iranian | 400 | Severely Endangered | 6 | Near East |
| 5997 | Ju | Afro-Asiatic | Chadic | 150 | Endangered | 5 | Africa |
| 4341 | Juang | Austro-Asiatic | Munda | 30875 | Vulnerable | 3 | South Asia |
| 10837 | Judeo-Egyptian Arabic | Afro-Asiatic | Semitic | Africa; Near East | |||
| 10502 | Judeo-Hamadani | Indo-European | Indo-Iranian | 1000 | Endangered | 5 | Near East |
| 10484 | Judeo-Iraqi Arabic | Afro-Asiatic | Semitic | 151820 | At risk | 2 | Near East |
| 10499 | Judeo-Isfahani | Indo-European | Indo-Iranian | Near East | |||
| 3443 | Judeo-Italian | Indo-European | Italic | 50 | Severely Endangered | 6 | Europe |
| 10500 | Judeo-Kashani | Indo-European | Indo-Iranian | Near East | |||
| 10834 | Judeo-Moroccan Arabic | Afro-Asiatic | Semitic | 258930 | At risk | 2 | Africa; Near East |
| 10503 | Judeo-Shirazi | Indo-European | Indo-Iranian | Near East | |||
| 3448 | Judeo-Tat | Indo-European | Indo-Iranian | 25000 | Vulnerable | 3 | Caucasus; Europe; Near East; East Asia |
| 10832 | Judeo-Tripolitanian Arabic | Afro-Asiatic | Semitic | Vulnerable | 3 | Africa; Near East | |
| 3705 | Judeo-Tunisian Arabic | Afro-Asiatic | Semitic | 352500 | At risk | 2 | Africa; Near East |
| 10501 | Judeo-Yazdi | Indo-European | Indo-Iranian | Near East | |||
| 10835 | Judeo-Yemeni Arabic | Afro-Asiatic | Semitic | 51000 | Vulnerable | 3 | Near East |
| 6046 | Juk | Austro-Asiatic | Bahnaric | 1500 | Threatened | 4 | Southeast Asia |
| 662 | Júma | Tupian | Tupi-Guaranian | 5 | Critically Endangered | 7 | South America |
| 6196 | Jumaytepeque Xinka | Xincan | 0 | Dormant | 9 | Mexico, Central America, Caribbean | |
| 6630 | Jurruru | Pama-Nyungan | Ngayarta | 0 | Dormant | 9 | Australia |
| 3152 | Juruna | Tupian | Jurunan | 300 | Endangered | 5 | South America |
| 603 | Ju|'hoan | Kx'a | 11000 | Vulnerable | 3 | Africa | |
| 3793 | K'emant | Afro-Asiatic | Cushitic | Severely Endangered | 6 | Africa | |
| 8049 | K'iche' | Mayan | K'ichean | 922378 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4345 | Kaanju | Pama-Nyungan | Paman | 50 | Critically Endangered | 7 | Australia |
| 3151 | Kaapor | Tupian | Tupi-Guaranian | 800 | Endangered | 5 | South America |
| 804 | Kabalai | Afro-Asiatic | Chadic | 17885 | Vulnerable | 3 | Africa |
| 3247 | Kabatei | Indo-European | Indo-Iranian | Near East | |||
| 5069 | Kabwa | Niger-Congo | Atlantic-Congo | 8500 | Threatened | 4 | Africa |
| 3261 | Kachari | Sino-Tibetan | Brahmaputran | 59000 | Endangered | 5 | South Asia |
| 1248 | Kaco' | Austro-Asiatic | Bahnaric | 3365 | Vulnerable | 3 | Southeast Asia |
| 1809 | Kadai | Austronesian | Malayo-Polynesian | 350 | Endangered | 5 | Southeast Asia |
| 4361 | Kadaru | Nubian | 7000 | Threatened | 4 | Africa | |
| 3150 | Kadiwéu | Guaicuruan | 1600 | Threatened | 4 | South America | |
| 10089 | Kadu | Sino-Tibetan | Kachinic | 30000 | Vulnerable | 3 | Southeast Asia |
| 4450 | Kaduo | Sino-Tibetan | Lolo-Burmese | 200000 | Vulnerable | 3 | East Asia |
| 9429 | Kaera | Timor-Alor-Pantar | 5500 | Vulnerable | 3 | Southeast Asia | |
| 5433 | Kagate | Sino-Tibetan | Bodish | 100 | Threatened | 4 | South Asia |
| 3250 | Kagoro | Niger-Congo | Mande | 15000 | Vulnerable | 3 | Africa |
| 10646 | Kaian | Lower Sepik-Ramu | Ramu | 792 | Threatened | 4 | Pacific |
| 1810 | Kaibobo | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Southeast Asia |
| 1811 | Kaiep | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 4475 | Kaike | Sino-Tibetan | Tamangic | 794 | Vulnerable | 3 | South Asia |
| 3148 | Kaingang | Jean | Southern Je | 18500 | Vulnerable | 3 | South America |
| 10524 | Kairiru | Austronesian | Malayo-Polynesian | 3507 | Threatened | 4 | Pacific |
| 1812 | Kairui-Midiki | Austronesian | Malayo-Polynesian | 15000 | Threatened | 4 | Pacific |
| 5017 | Kaivi | Niger-Congo | Atlantic-Congo | 2320 | Threatened | 4 | Africa |
| 2963 | Kaiwá | Tupian | Tupi-Guaranian | 26364 | Vulnerable | 3 | South America |
| 3214 | Kaixana | Arawakan | Northern Arawakan | 0 | Dormant | 9 | South America |
| 1813 | Kaiy | Lakes Plain | 220 | Endangered | 5 | Southeast Asia | |
| 3248 | Kajali | Indo-European | Indo-Iranian | Near East | |||
| 2220 | Kaki Ae | Isolate | Pacific | 510 | Endangered | 5 | Pacific |
| 3137 | Kakua | Kakua-Nukak | 220 | Endangered | 5 | South America | |
| 8689 | Kalaallisut | Eskimo-Aleut | Eskimo | 53000 | Vulnerable | 3 | Europe; North America |
| 7936 | Kalabari | Niger-Congo | Ijoid | 258000 | At risk | 2 | Africa |
| 1593 | Kalami | Indo-European | Indo-Iranian | 1500 | Threatened | 4 | South Asia |
| 4826 | Kalamsé | Niger-Congo | Atlantic-Congo | Threatened | 4 | Africa | |
| 1814 | Kalao | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Southeast Asia |
| 4409 | Kalasha | Indo-European | Indo-Iranian | 4300 | Threatened | 4 | South Asia |
| 4736 | Kalaw Kawaw Ya | Pama-Nyungan | 4000 | Endangered | 5 | Australia | |
| 4148 | Kalispel-Spokane-Pend d'Oreille-Salish | Salishan | Interior Salish | 70 | Severely Endangered | 6 | North America |
| 6632 | Kalkatungu | Pama-Nyungan | Kalkatungic | 0 | Dormant | 9 | Australia |
| 2906 | Kallawaya | Mixed Language | Severely Endangered | 6 | South America | ||
| 3260 | Kalmyk-Oirat | Mongolic | Common Mongolic | 323857 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 10598 | Kalou | Sepik | Tama | 820 | Endangered | 5 | Pacific |
| 9489 | Kamang | Timor-Alor-Pantar | Alor | 6000 | Threatened | 4 | Southeast Asia |
| 3309 | Kamara | Niger-Congo | Atlantic-Congo | 3000 | Vulnerable | 3 | Africa |
| 1815 | Kamarian | Austronesian | Malayo-Polynesian | 10 | Critically Endangered | 7 | Southeast Asia |
| 10474 | Kamas | Uralic | Samoyedic | 0 | Dormant | 9 | Caucasus; Europe; East Asia |
| 2221 | Kamasa | Trans-New Guinea | Angan | 7 | Critically Endangered | 7 | Pacific |
| 10571 | Kamasau | Torricelli | Marienberg Hills | 700 | Endangered | 5 | Pacific |
| 3122 | Kamayurá | Tupian | Tupi-Guaranian | 400 | Endangered | 5 | South America |
| 4472 | Kambaira | Trans-New Guinea | Kainantu-Goroka | 140 | Endangered | 5 | Pacific |
| 5998 | Kamda | Kadu | 3000 | Threatened | 4 | Africa | |
| 4414 | Kami (Nigeria) | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 4357 | Kami (Tanzania) | Niger-Congo | Atlantic-Congo | 5518 | Severely Endangered | 6 | Africa |
| 4476 | Karang | Niger-Congo | Atlantic-Congo | 18000 | Vulnerable | 3 | Africa |
| 2311 | Karanga | Maban | 10000 | Threatened | 4 | Africa | |
| 1891 | Karas | Trans-New Guinea | West Bomberai | 130 | Endangered | 5 | Southeast Asia |
| 2367 | Karata | Northeast Caucasian | Daghestanian | 5000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 3231 | Karawa | Sepik | Ram | 44 | Severely Endangered | 6 | Pacific |
| 10630 | Karawari | Lower Sepik-Ramu | Lower Sepik | 1300 | Threatened | 4 | Pacific |
| 5640 | Karbi | Sino-Tibetan | Karbic | 150000 | At risk | 2 | South Asia |
| 2368 | Karelian | Uralic | Finnic | 63000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 586 | Kari | Niger-Congo | Atlantic-Congo | 1000 | Endangered | 5 | Africa |
| 2114 | Kari'nja | Cariban | Guianan | 8600 | Threatened | 4 | South America |
| 4380 | Karingani | Indo-European | Indo-Iranian | 17600 | Vulnerable | 3 | Near East |
| 3107 | Karipuna | Tupian | Tupi-Guaranian | 10 | Severely Endangered | 6 | South America |
| 3106 | Karitiana | Tupian | Arikem | 320 | Endangered | 5 | South America |
| 5018 | Kariya | Afro-Asiatic | Chadic | 3000 | Threatened | 4 | Africa |
| 5558 | Kariyarra | Pama-Nyungan | Ngayarta | 2 | Critically Endangered | 7 | Australia |
| 10680 | Karkar-Yuri | Pauwasi | 1000 | Threatened | 4 | Pacific | |
| 5641 | Karko (India) | Sino-Tibetan | Tani | 2000 | Threatened | 4 | South Asia |
| 1857 | Karko (Sudan) | Nubian | 8000 | Endangered | 5 | Africa | |
| 1368 | Karo (Brazil) | Tupian | Ramaraman | 200 | Endangered | 5 | South America |
| 4462 | Karo (Ethiopia) | Afro-Asiatic | Omotic | 1000 | Threatened | 4 | Africa |
| 2224 | Karore | Austronesian | Malayo-Polynesian | 550 | Endangered | 5 | Pacific |
| 6689 | Kartujarra | Pama-Nyungan | Wati | 5 | Critically Endangered | 7 | Australia |
| 2297 | Karuk | Isolate | North American | 12 | Critically Endangered | 7 | North America |
| 4159 | Kasanga | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 1534 | Kashaya | Pomoan | Critically Endangered | 7 | North America | ||
| 3454 | Kashubian | Indo-European | Balto-Slavic | 50000 | Vulnerable | 3 | Europe |
| 5885 | Kasong | Austro-Asiatic | Pearic | 40 | Severely Endangered | 6 | Southeast Asia |
| 2032 | Kata Kolok | Sign Language | Southeast Asian | 175 | Endangered | 5 | Southeast Asia |
| 3103 | Katawixi | Harakmbut-Katukinan | Katukinan | 0 | Dormant | 9 | South America |
| 5193 | Kathu | Sino-Tibetan | Lolo-Burmese | 5000 | Threatened | 4 | East Asia |
| 3979 | Kati | Indo-European | Indo-Iranian | 4400 | Threatened | 4 | South Asia; Near East |
| 4355 | Katla | Niger-Congo | Katla-Tima | 14200 | Vulnerable | 3 | Africa |
| 4005 | Katukina | Harakmbut-Katukinan | Katukinan | 550 | Vulnerable | 3 | South America |
| 3102 | Katukina do Acre | Pano-Tacanan | Mainline | 318 | Endangered | 5 | South America |
| 3099 | Katxúyana | Cariban | Parukotoan | 150 | Severely Endangered | 6 | South America |
| 10745 | Kaure | Kaure | 450 | Endangered | 5 | Southeast Asia | |
| 5871 | Kaurna | Pama-Nyungan | Thura-Yura | 50 | Awakening | 8 | Australia |
| 4176 | Kavalan | Austronesian | East Formosan | Critically Endangered | 7 | East Asia | |
| 2225 | Kawacha | Trans-New Guinea | Angan | 12 | Severely Endangered | 6 | Pacific |
| 2295 | Kawaiisu | Uto-Aztecan | Northern Uto-Aztecan | 3 | Critically Endangered | 7 | North America |
| 3101 | Kawésqar | Kawesqaran | 7 | Critically Endangered | 7 | South America | |
| 3100 | Kaxararí | Pano-Tacanan | Mainline | 300 | Threatened | 4 | South America |
| 3149 | Kayabí | Tupian | Tupi-Guaranian | 1000 | Threatened | 4 | South America |
| 1132 | Kayardild | Tangkic | 5 | Critically Endangered | 7 | Australia | |
| 1892 | Kayeli | Austronesian | Malayo-Polynesian | 3 | Critically Endangered | 7 | Southeast Asia |
| 10553 | Kayik | Torricelli | Palei | 769 | Endangered | 5 | Pacific |
| 4189 | Kaytetye | Pama-Nyungan | Arandic | 200 | Endangered | 5 | Australia |
| 1894 | Kayupulau | Austronesian | Malayo-Polynesian | 573 | Severely Endangered | 6 | Southeast Asia |
| 7252 | Kazhuo | Sino-Tibetan | Lolo-Burmese | 6341 | Threatened | 4 | East Asia |
| 1895 | Keder | Orya-Tor | Tor | 370 | Endangered | 5 | Southeast Asia |
| 4386 | Kehu | Isolate | Pacific | 25 | Severely Endangered | 6 | Southeast Asia |
| 4363 | Keiga | Kadu | 6070 | Threatened | 4 | Africa | |
| 3257 | Kelo | Eastern Jebel | 200 | Endangered | 5 | Africa | |
| 2086 | Kelon | Timor-Alor-Pantar | Alor | 5000 | Threatened | 4 | Southeast Asia |
| 381 | Kemak | Austronesian | Malayo-Polynesian | 72000 | Vulnerable | 3 | Southeast Asia; Pacific |
| 1897 | Kembra | Unclassified | Lepki-Murkim-Kembra? | 20 | Severely Endangered | 6 | Southeast Asia |
| 573 | Kendeje | Maban | 2000 | Endangered | 5 | Africa | |
| 551 | Kendem | Niger-Congo | Atlantic-Congo | 1000 | Threatened | 4 | Africa |
| 10775 | Kene | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 4463 | Keningau Murut | Austronesian | Malayo-Polynesian | 7000 | Threatened | 4 | Southeast Asia |
| 1260 | Kensiu | Austro-Asiatic | Aslian | 500 | Endangered | 5 | Southeast Asia |
| 7871 | Kenuzi | Nubian | 50000 | Threatened | 4 | Africa | |
| 9569 | Kepo' | Austronesian | Malayo-Polynesian | 6000 | Threatened | 4 | Southeast Asia |
| 2429 | Kerek | Chukotko-Kamchatkan | Chukotkan | 10 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 10724 | Kesha'i | Indo-European | Indo-Iranian | 200 | Endangered | 5 | Near East |
| 2430 | Ket | Yeniseian | Northern Yeniseian | 500 | Endangered | 5 | Caucasus; Europe; East Asia |
| 4451 | Ketum | Trans-New Guinea | Awyu | 900 | Endangered | 5 | Southeast Asia |
| 1887 | Kgalagadi | Niger-Congo | Atlantic-Congo | 12500 | Vulnerable | 3 | Africa |
| 2434 | Khakas | Turkic | Siberian Turkic | 6000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 4396 | Khalaj | Turkic, Southern | 20000 | Vulnerable | 3 | Near East | |
| 4408 | Khaling | Sino-Tibetan | Kiranti | 15000 | Vulnerable | 3 | South Asia |
| 4346 | Khamba | Sino-Tibetan | Bodish | 1330 | Threatened | 4 | South Asia |
| 10482 | Khamnigan Ewenki | Tungusic | Northern Tungusic | 1000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 8234 | Khamnigan Mongol | Mongolic | Common Mongolic | 300 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 1425 | Khamti | Tai-Kadai | Kam-Tai | 13000 | Vulnerable | 3 | South Asia; Southeast Asia |
| 1424 | Khamyang | Tai-Kadai | Kam-Tai | 50 | Critically Endangered | 7 | South Asia |
| 4397 | Kháng | Austro-Asiatic | Palaungic | 3921 | Threatened | 4 | Southeast Asia |
| 5618 | Kharia | Austro-Asiatic | Munda | Vulnerable | 3 | South Asia | |
| 10911 | Khatso | Sino-Tibetan | Tibeto-Burman | 5432 | Threatened | 4 | East Asia |
| 3814 | Khe | Niger-Congo | Atlantic-Congo | 1300 | Threatened | 4 | Africa |
| 5643 | Khengkha | Sino-Tibetan | Bodish | 40000 | Vulnerable | 3 | South Asia |
| 5644 | Khezha Naga | Sino-Tibetan | Angami-Pochuri | 23000 | Vulnerable | 3 | South Asia |
| 5645 | Khiamniungan Naga | Sino-Tibetan | Brahmaputran | 47800 | Vulnerable | 3 | South Asia |
| 2436 | Khinalugh | Northeast Caucasian | Daghestanian | 3000 | Threatened | 4 | Caucasus |
| 3815 | Khisa | Niger-Congo | Atlantic-Congo | 8000 | Threatened | 4 | Africa |
| 3252 | Kho'ini | Indo-European | Indo-Iranian | Severely Endangered | 6 | Near East | |
| 8249 | Khoekhoe | Khoe | Khoekhoe | 200000 | Vulnerable | 3 | Africa |
| 5647 | Khowar | Indo-European | Indo-Iranian | 300000 | At risk | 2 | South Asia |
| 6108 | Khufi | Indo-European | Indo-Iranian | 2380 | Vulnerable | 3 | Near East |
| 2209 | Khunsari | Indo-European | Indo-Iranian | 21100 | Vulnerable | 3 | Near East |
| 2505 | Khvarshi | Northeast Caucasian | Daghestanian | 300 | Threatened | 4 | Caucasus; Europe; East Asia |
| 7452 | Khwe | Khoe | Kalahari | 7000 | Threatened | 4 | Africa |
| 4181 | Kiai | Austronesian | Malayo-Polynesian | 450 | Endangered | 5 | Pacific |
| 10741 | Kibiri-Porome | Isolate | Pacific | 1180 | Threatened | 4 | Pacific |
| 4390 | Kickapoo | Algic | Algonquian | 1100 | Threatened | 4 | North America; Mexico, Central America, Caribbean |
| 4210 | Kija | Jarrakan | 100 | Severely Endangered | 6 | Australia | |
| 3565 | Kildin Saami | Uralic | Saami | 300 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 10473 | Kilen | Tungusic | Southern Tungusic | 20 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 10472 | Kili | Tungusic | Southern Tungusic | 100 | Endangered | 5 | Caucasus; Europe; East Asia |
| 2293 | Kiliwa | Cochimi-Yuman | Yuman | 8 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 10672 | Kilmeri | Border | Bewani | 2200 | Threatened | 4 | Pacific |
| 4389 | Kim | Niger-Congo | Atlantic-Congo | 15400 | Vulnerable | 3 | Africa |
| 5147 | Kimki | Isolate | 500 | Threatened | 4 | Southeast Asia | |
| 4353 | Kinalakna | Trans-New Guinea | Finisterre-Huon | 220 | Endangered | 5 | Pacific |
| 4373 | Kinnauri | Sino-Tibetan | Tibeto-Kanauri | 84000 | Threatened | 4 | South Asia |
| 1262 | Kintaq | Austro-Asiatic | Aslian | Endangered | 5 | Southeast Asia | |
| 4401 | Kiong | Niger-Congo | Atlantic-Congo | 100 | Severely Endangered | 6 | Africa |
| 867 | Kiowa | Kiowa-Tanoan | 100 | Critically Endangered | 7 | North America | |
| 653 | Kiowa Apache | Athabaskan-Eyak-Tlingit | Athabaskan | 0 | Dormant | 9 | North America |
| 9769 | Kiput | Austronesian | Malayo-Polynesian | 450 | Endangered | 5 | Southeast Asia |
| 10652 | Kire | Lower Sepik-Ramu | Ramu | 1900 | Threatened | 4 | Pacific |
| 7931 | Kirike | Niger-Congo | Ijoid | 248000 | At risk | 2 | Africa |
| 4395 | Kirikiri | Lakes Plain | 250 | Endangered | 5 | Southeast Asia | |
| 4394 | Kis | Austronesian | Malayo-Polynesian | 216 | Endangered | 5 | Pacific |
| 4785 | Kiwilwana | Niger-Congo | Atlantic-Congo | 8000 | Threatened | 4 | Africa |
| 2292 | Klallam | Salishan | Central Salish | Awakening | 8 | North America | |
| 2291 | Klamath-Modoc | Plateau | Awakening | 8 | North America | ||
| 4182 | Ko | Niger-Congo | Heiban | 2680 | Threatened | 4 | Africa |
| 843 | Koasati | Muskogean | 200 | Severely Endangered | 6 | North America | |
| 4352 | Kobiana | Niger-Congo | Atlantic-Congo | 400 | Endangered | 5 | Africa |
| 4359 | Koch | Sino-Tibetan | Brahmaputran | Vulnerable | 3 | South Asia | |
| 5623 | Koda | Austro-Asiatic | Munda | 25000 | Vulnerable | 3 | South Asia |
| 4365 | Kodagu | Dravidian | South Dravidian | 97011 | Threatened | 4 | South Asia |
| 1899 | Kodeoha | Austronesian | Malayo-Polynesian | 1500 | Threatened | 4 | Southeast Asia |
| 2090 | Kodiak Russian Creole | Pidgin or Creole | Russian based | 5 | Critically Endangered | 7 | Caucasus; Europe; North America; East Asia |
| 5019 | Koenoem | Afro-Asiatic | Chadic | 3000 | Threatened | 4 | Africa |
| 1965 | Kofa | Afro-Asiatic | Chadic | Vulnerable | 3 | Africa | |
| 1900 | Kofei | East Geelvink Bay | 100 | Severely Endangered | 6 | Southeast Asia | |
| 5648 | Koi | Sino-Tibetan | Kiranti | 2500 | Threatened | 4 | South Asia |
| 4867 | Koireng | Sino-Tibetan | Kukish | 1410 | Vulnerable | 3 | South Asia |
| 2227 | Koitabu | Trans-New Guinea | Koiarian | 2700 | Threatened | 4 | Pacific |
| 10612 | Koiwat | Sepik | Ndu | 450 | Endangered | 5 | Pacific |
| 6692 | Kok-Nar | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 4445 | Kokatha | Pama-Nyungan | Wati | 3 | Critically Endangered | 7 | Australia |
| 574 | Koke | Niger-Congo | Atlantic-Congo | 600 | Endangered | 5 | Africa |
| 10760 | Koko Babangk | Pama-Nyungan | Paman | Dormant | 9 | Australia | |
| 4402 | Koko-Bera | Pama-Nyungan | Paman | 15 | Severely Endangered | 6 | Australia |
| 4232 | Kokota | Austronesian | Malayo-Polynesian | 1200 | Threatened | 4 | Pacific |
| 10809 | Kol | Isolate | Pacific | 4000 | Threatened | 4 | Pacific |
| 6693 | Kolakngat | Pama-Nyungan | Kulinic | 0 | Dormant | 9 | Australia |
| 3801 | Kolbila | Niger-Congo | Atlantic-Congo | Endangered | 5 | Africa | |
| 4416 | Kom | Sino-Tibetan | Kukish | 15467 | Vulnerable | 3 | South Asia |
| 10563 | Kombio | Torricelli | Kombian | 2970 | Endangered | 5 | Pacific |
| 3279 | Komi-Permyak | Uralic | Permian | 110000 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 10697 | Kominimung | Lower Sepik-Ramu | Ramu | 328 | Endangered | 5 | Pacific |
| 10748 | Komnzo | Morehead-Upper Maro | 200 | Endangered | 5 | Pacific | |
| 3233 | Komo | Koman | 1435 | Threatened | 4 | Africa | |
| 4367 | Konda-Dora | Dravidian | South Dravidian | 15000 | Vulnerable | 3 | South Asia |
| 1901 | Koneraw | Trans-New Guinea | Mombum | 1200 | Threatened | 4 | Southeast Asia |
| 2290 | Konkow | Maiduan | 3 | Critically Endangered | 7 | North America | |
| 3317 | Konni | Niger-Congo | Atlantic-Congo | 3800 | Vulnerable | 3 | Africa |
| 5020 | Kono | Niger-Congo | Atlantic-Congo | 5520 | Threatened | 4 | Africa |
| 4423 | Konomala | Austronesian | Malayo-Polynesian | 800 | Endangered | 5 | Pacific |
| 5650 | Konyak Naga | Sino-Tibetan | Brahmaputran | 70000 | Vulnerable | 3 | South Asia |
| 3232 | Kopar | Lower Sepik-Ramu | Lower Sepik | 229 | Endangered | 5 | Pacific |
| 10686 | Kopkaka | Trans-New Guinea | Ok | 400 | Endangered | 5 | Southeast Asia |
| 1306 | Korana | Khoe | Khoekhoe | 1 | Critically Endangered | 7 | Africa |
| 5621 | Korku | Austro-Asiatic | Munda | 200000 | At risk | 2 | South Asia |
| 4375 | Koro (Cote d'Ivoire) | Niger-Congo | Mande | 40000 | Vulnerable | 3 | Africa |
| 7649 | Koro (India) | Unclassified | Sino-Tibetan? | 1000 | Endangered | 5 | South Asia |
| 4226 | Koro (Vanuatu) | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Pacific |
| 1902 | Koroni | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Southeast Asia |
| 5999 | Korop | Niger-Congo | Atlantic-Congo | 17640 | Vulnerable | 3 | Africa |
| 4449 | Koroshi | Indo-European | Indo-Iranian | 180 | Endangered | 5 | Near East |
| 4385 | Korowai | Trans-New Guinea | Awyu | 3500 | Threatened | 4 | Southeast Asia |
| 4368 | Korra Koraga | Dravidian | South-Central Dravidian | 14000 | Vulnerable | 3 | South Asia |
| 3090 | Korubo | Pano-Tacanan | Mayoruna | 26 | Severely Endangered | 6 | South America |
| 5624 | Korwa | Austro-Asiatic | Munda | 35000 | Vulnerable | 3 | South Asia |
| 2506 | Koryak | Chukotko-Kamchatkan | Chukotkan | 3000 | Endangered | 5 | Caucasus; Europe; East Asia |
| 4393 | Kosadle | Isolate | 250 | Endangered | 5 | Southeast Asia | |
| 8869 | Koshin | Niger-Congo | Atlantic-Congo | 3250 | Threatened | 4 | Africa |
| 4428 | Kosraean | Austronesian | Malayo-Polynesian | 8570 | Threatened | 4 | Pacific |
| 4427 | Kota (Gabon) | Niger-Congo | Atlantic-Congo | 43460 | Vulnerable | 3 | Africa |
| 4369 | Kota (India) | Dravidian | South Dravidian | 900 | Endangered | 5 | South Asia |
| 2094 | Kove | Austronesian | Malayo-Polynesian | 6750 | Threatened | 4 | Pacific |
| 2228 | Kowaki | Trans-New Guinea | Madang | 30 | Severely Endangered | 6 | Pacific |
| 2279 | Kowiai | Austronesian | Malayo-Polynesian | 600 | Endangered | 5 | Southeast Asia |
| 1939 | Koyukon | Athabaskan-Eyak-Tlingit | Dene (Athabaskan) | 150 | Critically Endangered | 7 | North America |
| 5042 | Kpan | Niger-Congo | Atlantic-Congo | 11400 | Vulnerable | 3 | Africa |
| 6000 | Kpatili | Niger-Congo | Atlantic-Congo | 4500 | Threatened | 4 | Africa |
| 5078 | Kpessi | Niger-Congo | Atlantic-Congo | 2729 | Vulnerable | 3 | Africa |
| 3087 | Krahô | Jean | Northern Je | 2184 | Threatened | 4 | South America |
| 5337 | Kraol | Austro-Asiatic | Bahnaric | 1960 | Vulnerable | 3 | Southeast Asia |
| 4440 | Kravet | Austro-Asiatic | Bahnaric | 2380 | Threatened | 4 | Southeast Asia |
| 1937 | Ktunaxa | Isolate | North American | 31 | Critically Endangered | 7 | North America |
| 5765 | Kuanhua | Austro-Asiatic | Khmuic | 1000 | Threatened | 4 | East Asia |
| 1066 | Kubeo | Tucanoan | Eastern Tucanoan | 7900 | Threatened | 4 | South America |
| 5021 | Kubi | Afro-Asiatic | Chadic | 0 | Dormant | 9 | Africa |
| 4510 | Kucong | Sino-Tibetan | Lolo-Burmese | 45000 | Vulnerable | 3 | Southeast Asia; East Asia |
| 4429 | Kudu-Camo | Niger-Congo | Atlantic-Congo | Severely Endangered | 6 | Africa | |
| 5022 | Kugbo | Niger-Congo | Atlantic-Congo | 2000 | Threatened | 4 | Africa |
| 2587 | Kugu-Nganhcara | Pama-Nyungan | Paman | 50 | Severely Endangered | 6 | Australia |
| 10073 | Kuhpayi | Indo-European | Indo-Iranian | Severely Endangered | 6 | Near East | |
| 5652 | Kui (India) | Dravidian | South Dravidian | 500000 | At risk | 2 | South Asia |
| 4453 | Kui (Indonesia) | Timor-Alor-Pantar | Alor | 4240 | Threatened | 4 | Southeast Asia |
| 1852 | Kuikuro | Cariban | Nahukwa | 1106 | Threatened | 4 | South America |
| 575 | Kujarge | Unclassified | Afro-Asiatic? | 1000 | Endangered | 5 | Africa |
| 4374 | Kuk | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 4204 | Kukatj | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 5886 | Kukatja | Pama-Nyungan | Wati | 1000 | Vulnerable | 3 | Australia |
| 3240 | Kuku-Mangk | Pama-Nyungan | Paman | 1 | Critically Endangered | 7 | Australia |
| 3241 | Kuku-Mu'inh | Pama-Nyungan | Paman | 7 | Critically Endangered | 7 | Australia |
| 3243 | Kuku-Muminh | Pama-Nyungan | Paman | 31 | Critically Endangered | 7 | Australia |
| 3436 | Kuku-Ugbanh | Pama-Nyungan | Paman | 6 | Critically Endangered | 7 | Australia |
| 3404 | Kuku-Uwanh | Pama-Nyungan | Paman | 40 | Severely Endangered | 6 | Australia |
| 4250 | Kuku-Yalanji | Pama-Nyungan | Yalandyic | 700 | Endangered | 5 | Australia |
| 8330 | Kula | Timor-Alor-Pantar | Alor | 5000 | Vulnerable | 3 | Southeast Asia |
| 2312 | Kulfa | Central Sudanic | Bongo-Bagirmi | 2200 | Threatened | 4 | Africa |
| 1734 | Kulina | Pano-Tacanan | Mayoruna | 30 | Severely Endangered | 6 | South America |
| 5653 | Kulung (Nepal) | Sino-Tibetan | Kiranti | 33200 | Threatened | 4 | South Asia |
| 3888 | Kulung (Nigeria) | Niger-Congo | Atlantic-Congo | 15000 | Vulnerable | 3 | Africa |
| 10475 | Kumandin | Turkic | South Siberian | 1044 | Endangered | 5 | Caucasus; Europe; East Asia |
| 4415 | Kumarbhag Paharia | Dravidian | North Dravidian | 20200 | Vulnerable | 3 | South Asia |
| 3246 | Kumbewaha | Austronesian | Malayo-Polynesian | 3400 | Threatened | 4 | Southeast Asia |
| 847 | Kumeyaay | Cochimi-Yuman | Yuman | 45 | Critically Endangered | 7 | North America; Mexico, Central America, Caribbean |
| 4438 | Kumhali | Indo-European | Indo-Iranian | 12200 | Endangered | 5 | South Asia |
| 3093 | Kumzari | Indo-European | Indo-Iranian | 4000 | Vulnerable | 3 | Near East |
| 1369 | Kuna | Chibchan | Isthmic | 44100 | Vulnerable | 3 | South America; Mexico, Central America, Caribbean |
| 3340 | Kunbarlang | Gunwinyguan | Gunwinggic | 75 | Severely Endangered | 6 | Australia |
| 5655 | Kurtokha | Sino-Tibetan | Bodish | 15000 | Vulnerable | 3 | South Asia |
| 3085 | Kuruaya | Tupian | Mundurukun | 0 | Dormant | 9 | South America |
| 5873 | Kusunda | Isolate | South Asian | 1 | Critically Endangered | 7 | South Asia |
| 10441 | Kuteb | Niger-Congo | Atlantic-Congo | 100000 | At risk | 2 | Africa |
| 3222 | Kuthant | Pama-Nyungan | Paman | 3 | Critically Endangered | 7 | Australia |
| 5024 | Kuturmi | Niger-Congo | Atlantic-Congo | 10500 | Vulnerable | 3 | Africa |
| 2573 | Kuuk Thaayorre | Pama-Nyungan | Paman | 150 | Endangered | 5 | Australia |
| 10761 | Kuuk-Yak | Pama-Nyungan | Paman | Dormant | 9 | Australia | |
| 3785 | Kuuku-Ya'u | Pama-Nyungan | Paman | 100 | Severely Endangered | 6 | Australia |
| 4468 | Kuvi | Dravidian | South Dravidian | 246513 | At risk | 2 | South Asia |
| 4062 | Kuwaataay | Niger-Congo | Atlantic-Congo | 6210 | Threatened | 4 | Africa |
| 3329 | Kuwema | Northern Daly | 10 | Severely Endangered | 6 | Australia | |
| 6664 | Kuyani | Pama-Nyungan | Thura-Yura | 0 | Dormant | 9 | Australia |
| 4147 | Kven Finnish | Uralic | Finnic | 5750 | Severely Endangered | 6 | Europe |
| 6006 | Kw'adza | Afro-Asiatic | Cushitic | 0 | Dormant | 9 | Africa |
| 1936 | Kwak̓wala | Wakashan | Northern Wakashan | 139 | Severely Endangered | 6 | North America |
| 2676 | Kwama | Koman | Vulnerable | 3 | Africa | ||
| 10604 | Kwanga | Sepik | Nukuma | 7520 | Threatened | 4 | Pacific |
| 3803 | Kwarandzyey | Songhay | 3000 | Endangered | 5 | Africa | |
| 10613 | Kwaruwi Kwundi | Sepik | Ndu | 3300 | Threatened | 4 | Pacific |
| 3033 | Kwaza | Isolate | South American | 25 | Severely Endangered | 6 | South America |
| 2677 | Kwegu | Surmic | Southeast Surmic | 300 | Endangered | 5 | Africa |
| 4461 | Kwer | Trans-New Guinea | Ok | 100 | Severely Endangered | 6 | Southeast Asia |
| 2281 | Kwerisa | Lakes Plain | 32 | Severely Endangered | 6 | Southeast Asia | |
| 10603 | Kwoma | Sepik | Nukuma | 2925 | Threatened | 4 | Pacific |
| 10660 | Kwomtari | Kwomtari-Nai | 800 | Threatened | 4 | Pacific | |
| 576 | Laal | Isolate | 500 | Endangered | 5 | Africa | |
| 4482 | Label | Austronesian | Malayo-Polynesian | 140 | Endangered | 5 | Pacific |
| 4332 | Labir | Niger-Congo | Atlantic-Congo | 13000 | Vulnerable | 3 | Africa |
| 9950 | Laboya | Austronesian | Malayo-Polynesian | 23000 | Threatened | 4 | Southeast Asia |
| 4485 | Labu | Austronesian | Malayo-Polynesian | 1600 | Threatened | 4 | Pacific |
| 1442 | Lacandon | Mayan | Yucatecan | 563 | Endangered | 5 | Mexico, Central America, Caribbean |
| 1506 | Lachi | Tai-Kadai | Kadai | 5000 | Threatened | 4 | Southeast Asia |
| 5656 | Ladakhi | Sino-Tibetan | Bodish | 150000 | Threatened | 4 | South Asia; East Asia |
| 3392 | Ladin | Indo-European | Italic | 20000 | Threatened | 4 | Europe |
| 3444 | Ladino | Indo-European | Italic | 400000 | At risk | 2 | Europe; North America; Mexico, Central America, Caribbean; Near East; Africa |
| 5555 | Ladji Ladji | Pama-Nyungan | Kulinic | 10 | Severely Endangered | 6 | Australia |
| 10560 | Laeko-Libuat | Torricelli | Maimai | 538 | Threatened | 4 | Pacific |
| 4478 | Lafofa | Niger-Congo | 600 | Endangered | 5 | Africa | |
| 3576 | Laghu | Austronesian | Malayo-Polynesian | 0 | Dormant | 9 | Pacific |
| 4498 | Laghuu | Sino-Tibetan | Lolo-Burmese | 1000 | Endangered | 5 | Southeast Asia |
| 10169 | Lagwan | Afro-Asiatic | Chadic | 10000 | Vulnerable | 3 | Africa |
| 4500 | Laha (Indonesia) | Austronesian | Malayo-Polynesian | 3890 | Threatened | 4 | Southeast Asia |
| 1507 | Laha (Vietnam) | Tai-Kadai | Kadai | Severely Endangered | 6 | Southeast Asia | |
| 2282 | Laiyolo | Austronesian | Malayo-Polynesian | 800 | Endangered | 5 | Southeast Asia |
| 1505 | Laji | Tai-Kadai | Kadai | 200 | Critically Endangered | 7 | East Asia |
| 1147 | Lake Miwok | Utian | Miwokan | 0 | Dormant | 9 | North America |
| 4511 | Lakha | Sino-Tibetan | Bodish | 8000 | Threatened | 4 | South Asia |
| 1434 | Lakkia | Tai-Kadai | Kam-Tai | 9000 | Threatened | 4 | East Asia |
| 1743 | Lakon | Austronesian | Malayo-Polynesian | 800 | Endangered | 5 | Pacific |
| 2052 | Lakota | Siouan | Mississippi Valley Siouan | 2000 | Severely Endangered | 6 | North America |
| 5606 | Lama | Sino-Tibetan | Baic | 15000 | Endangered | 5 | East Asia |
| 4486 | Lamalama | Pama-Nyungan | Paman | 1 | Critically Endangered | 7 | Australia |
| 5307 | Lambayeque Quechua | Quechuan | Quechua II | 20000 | Threatened | 4 | South America |
| 10820 | Lamen | Austronesian | Malayo-Polynesian | 850 | Endangered | 5 | Pacific |
| 849 | Lamkang | Sino-Tibetan | Kukish | 5894 | Endangered | 5 | South Asia |
| 5131 | Lamu | Sino-Tibetan | Lolo-Burmese | 120 | Endangered | 5 | East Asia |
| 7716 | Landoma | Niger-Congo | Atlantic-Congo | 25000 | Vulnerable | 3 | Africa |
| 552 | Langa | Niger-Congo | Atlantic-Congo | 500 | Endangered | 5 | Africa |
| 10517 | Langam | Mongol-Langam-Ulwa | 254 | Endangered | 5 | Pacific | |
| 10463 | Langas | Afro-Asiatic | Chadic | Endangered | 5 | Africa | |
| 1512 | Langnian Buyang | Tai-Kadai | Kadai | 300 | Severely Endangered | 6 | East Asia |
| 3391 | Languedocien | Indo-European | Italic | 1000000 | Vulnerable | 3 | Europe |
| 1261 | Lanoh | Austro-Asiatic | Aslian | 350 | Endangered | 5 | Southeast Asia |
| 4543 | Laomian | Sino-Tibetan | Lolo-Burmese | Threatened | 4 | Southeast Asia; East Asia | |
| 1574 | Lapachu | Arawakan | 0 | Dormant | 9 | South America | |
| 1436 | Laqua | Tai-Kadai | Kadai | 432 | Severely Endangered | 6 | Southeast Asia; East Asia |
| 8116 | Laraos Quechua | Quechuan | Quechua IIA | South America | |||
| 3787 | Lardil | Tangkic | 5 | Critically Endangered | 7 | Australia | |
| 4536 | Larëvat | Austronesian | Malayo-Polynesian | 750 | Endangered | 5 | Pacific |
| 4531 | Lari | Indo-European | Indo-Iranian | 80000 | Vulnerable | 3 | Near East |
| 4533 | Laro | Niger-Congo | Heiban | 40000 | Vulnerable | 3 | Africa |
| 4530 | Larrakiya | Unclassified | Darwin Region? | 6 | Critically Endangered | 7 | Australia |
| 4535 | Lasgerdi | Indo-European | Indo-Iranian | 1000 | Threatened | 4 | Near East |
| 2265 | Laua | Trans-New Guinea | Mailuan | 1 | Critically Endangered | 7 | Pacific |
| 1332 | Lauje | Austronesian | Malayo-Polynesian | 38000 | Threatened | 4 | Southeast Asia |
| 3968 | Lave | Austro-Asiatic | Bahnaric | 32230 | Vulnerable | 3 | Southeast Asia |
| 10269 | Lavukaleve | Isolate | 1700 | Threatened | 4 | Pacific | |
| 1242 | Lawa | Austro-Asiatic | Palaungic | Vulnerable | 3 | Southeast Asia | |
| 2246 | Laz | South Caucasian | 27500 | Vulnerable | 3 | Europe; Caucasus | |
| 10814 | Lebo' Vo' Kenyah | Austronesian | Malayo-Polynesian | Endangered | 5 | Southeast Asia | |
| 2915 | Leco | Isolate | South American | 0 | Dormant | 9 | South America |
| 2283 | Legenyem | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Southeast Asia |
| 7371 | Lehali | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Pacific |
| 7709 | Lehar | Niger-Congo | Atlantic-Congo | 7500 | Threatened | 4 | Africa |
| 4512 | Lelak | Austronesian | Malayo-Polynesian | 220 | Endangered | 5 | Southeast Asia |
| 10802 | Lelepa | Austronesian | Malayo-Polynesian | 400 | Endangered | 5 | Pacific |
| 7373 | Lemerig | Austronesian | Malayo-Polynesian | 2 | Critically Endangered | 7 | Pacific |
| 2284 | Lemolang | Austronesian | Malayo-Polynesian | 2000 | Threatened | 4 | Southeast Asia |
| 10751 | Lendamboi | Austronesian | Malayo-Polynesian | 800 | Endangered | 5 | Pacific |
| 2285 | Lengilu | Austronesian | Malayo-Polynesian | 4 | Critically Endangered | 7 | Southeast Asia |
| 4496 | Lenkau | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Pacific |
| 4495 | Lepcha | Sino-Tibetan | Severely Endangered | 6 | South Asia | ||
| 4528 | Lepki | Unclassified | Lepki-Murkim-Kembra? | 530 | Endangered | 5 | Southeast Asia |
| 4231 | Lere | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 5657 | Levai | Unclassified | Sino-Tibetan? | 1000 | Threatened | 4 | South Asia |
| 4503 | Lhokpu | Sino-Tibetan | 2500 | Threatened | 4 | South Asia | |
| 5642 | Lhomi | Sino-Tibetan | Bodish | 3130 | Vulnerable | 3 | South Asia; East Asia |
| 4509 | Liabuku | Austronesian | Malayo-Polynesian | 75 | Severely Endangered | 6 | Southeast Asia |
| 5658 | Liangmai Naga | Sino-Tibetan | Zemeic | 34232 | Vulnerable | 3 | South Asia |
| 2287 | Liki | Austronesian | Malayo-Polynesian | 11 | Severely Endangered | 6 | Southeast Asia |
| 2266 | Likum | Austronesian | Malayo-Polynesian | 80 | Severely Endangered | 6 | Pacific |
| 10578 | Lilau | Torricelli | Bogia | 410 | Endangered | 5 | Pacific |
| 1621 | Limbu | Sino-Tibetan | Kiranti | 300000 | Threatened | 4 | South Asia |
| 4515 | Limilngan | Limilngan | 3 | Critically Endangered | 7 | Australia | |
| 10461 | Limousin | Indo-European | Italic | 400000 | At risk | 2 | Europe |
| 8118 | Lincha Quechua | Quechuan | South America | ||||
| 6666 | Linngithigh | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 654 | Lipan | Athabaskan-Eyak-Tlingit | Athabaskan | Awakening | 8 | North America | |
| 2288 | Lisela | Austronesian | Malayo-Polynesian | 11900 | Vulnerable | 3 | Southeast Asia |
| 4537 | Lishana Deni | Afro-Asiatic | Semitic | 7500 | Threatened | 4 | Near East |
| 4545 | Litzlitz | Austronesian | Malayo-Polynesian | 18 | Critically Endangered | 7 | Pacific |
| 3388 | Livonian | Uralic | Finnic | 0 | Dormant | 9 | Europe |
| 3281 | Livvi | Uralic | Finnic | 27000 | Endangered | 5 | Caucasus; Europe; East Asia |
| 5562 | Liyagalawumirr | Pama-Nyungan | Yolngu | 50 | Severely Endangered | 6 | Australia |
| 5549 | Liyagawumirr | Pama-Nyungan | Yolngu | 50 | Severely Endangered | 6 | Australia |
| 10624 | Lizu | Sino-Tibetan | Tibeto-Burman | 4000 | Endangered | 5 | East Asia |
| 10822 | Lo-Toga | Austronesian | Malayo-Polynesian | 580 | Endangered | 5 | Pacific |
| 6030 | Logba | Niger-Congo | Atlantic-Congo | 7500 | Threatened | 4 | Africa |
| 4523 | Logol | Niger-Congo | Heiban | 2600 | Threatened | 4 | Africa |
| 4508 | Logorik | Daju | Eastern Daju | 2000 | Threatened | 4 | Africa |
| 3387 | Logudorese Sardinian | Indo-European | Italic | 500000 | Threatened | 4 | Europe |
| 1708 | Lokono | Arawakan | Northern Arawakan | 2000 | Severely Endangered | 6 | South America |
| 2289 | Lola | Austronesian | Malayo-Polynesian | 830 | Endangered | 5 | Southeast Asia |
| 2703 | Lolak | Austronesian | Malayo-Polynesian | Severely Endangered | 6 | Southeast Asia | |
| 8451 | Lole | Austronesian | Malayo-Polynesian | 20000 | Vulnerable | 3 | Southeast Asia |
| 2056 | Longgu | Austronesian | Malayo-Polynesian | 1500 | Threatened | 4 | Pacific |
| 10481 | Lopnor Uighur | Turkic | Central Asian Turkic | 24000 | Critically Endangered | 7 | East Asia |
| 3574 | Lorediakarkar | Austronesian | Malayo-Polynesian | Severely Endangered | 6 | Pacific | |
| 5659 | Lotha Naga | Sino-Tibetan | Aoic | 170001 | At risk | 2 | South Asia |
| 10561 | Lou | Torricelli | Kombian | 953 | Endangered | 5 | Pacific |
| 10417 | Louisiana Creole | Pidgin or Creole | French lexified | 7000 | Severely Endangered | 6 | North America |
| 2708 | Loun | Austronesian | Malayo-Polynesian | 0 | Dormant | 9 | Southeast Asia |
| 4061 | Lower Central Chinantec | Otomanguean | Chinantecan | 1500 | Threatened | 4 | Mexico, Central America, Caribbean |
| 5386 | Lower Silesian | Indo-European | Germanic | 22900 | Vulnerable | 3 | Europe |
| 4109 | Lower Sorbian | Indo-European | Balto-Slavic | 7240 | Threatened | 4 | Europe |
| 9869 | Lower Southeastern Chinantec | Otomanguean | Chinantecan | 10700 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 6788 | Lower Southern Aranda | Pama-Nyungan | Arandic | 0 | Dormant | 9 | Australia |
| 9872 | Lower West-Central Chinantec | Otomanguean | Chinantecan | 9260 | Threatened | 4 | Mexico, Central America, Caribbean |
| 1441 | Lowland Chontal | Tequistlatecan | 100 | Severely Endangered | 6 | Mexico, Central America, Caribbean | |
| 3274 | Lowland Ecuadorian Quichua | Quechuan | Quechua IIB | 17855 | Vulnerable | 3 | South America |
| 4630 | Lowland Mixe | Mixe-Zoquean | Mixean | 50900 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3575 | Löyöp | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Pacific |
| 8452 | Luang | Austronesian | Malayo-Polynesian | 18000 | Vulnerable | 3 | Southeast Asia |
| 3385 | Ludian | Uralic | Finnic | 300 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 4489 | Lufu | Niger-Congo | Atlantic-Congo | 3200 | Threatened | 4 | Africa |
| 1932 | Luiseño | Uto-Aztecan | Northern Uto-Aztecan | Awakening | 8 | North America | |
| 3384 | Lule Saami | Uralic | Saami | 1500 | Endangered | 5 | Europe |
| 4516 | Lumun | Niger-Congo | Talodi | 30000 | Vulnerable | 3 | Africa |
| 4541 | Luo | Niger-Congo | Atlantic-Congo | 1 | Critically Endangered | 7 | Africa |
| 4488 | Luri | Afro-Asiatic | Chadic | 2 | Critically Endangered | 7 | Africa |
| 10462 | Lushi | Afro-Asiatic | Chadic | 0 | Dormant | 9 | Africa |
| 5396 | Lushootseed | Salishan | Central Salish | 5 | Critically Endangered | 7 | North America |
| 4540 | Luwati | Indo-European | Indo-Iranian | 5000 | Vulnerable | 3 | Near East |
| 5925 | Mabaan | Nilotic | Western Nilotic | 25 | Severely Endangered | 6 | Africa |
| 3626 | Mabire | Afro-Asiatic | Chadic | 5 | Critically Endangered | 7 | Africa |
| 5159 | Macaguaje | Tucanoan | Western Tucanoan | 0 | Dormant | 9 | South America |
| 3025 | Macaguán | Guajiboan | 441 | Endangered | 5 | South America | |
| 3022 | Machiguenga | Arawakan | Southern Arawakan | 5000 | Threatened | 4 | South America |
| 3017 | Macuna | Tucanoan | Eastern Tucanoan | 1041 | Threatened | 4 | South America |
| 4241 | Madi | Trans-New Guinea | Finisterre-Huon | 380 | Endangered | 5 | Pacific |
| 5025 | Mághdì | Niger-Congo | Atlantic-Congo | 2000 | Threatened | 4 | Africa |
| 2267 | Magori | Trans–New Guinea | Finisterre-Huon | 200 | Endangered | 5 | Pacific |
| 2984 | Muinane | Boran | 78 | Severely Endangered | 6 | South America | |
| 1431 | Mulam | Tai-Kadai | Kam-Tai | 30000 | Endangered | 5 | East Asia |
| 10586 | Mulao | Tai-Kadai | Kra | Critically Endangered | 7 | East Asia | |
| 3373 | Muluridyi | Pama-Nyungan | Yalandyic | 1 | Critically Endangered | 7 | Australia |
| 8829 | Mundabli-Mufu | Niger-Congo | Atlantic-Congo | 515 | Endangered | 5 | Africa |
| 2981 | Mundurukú | Tupian | Mundurukun | 8000 | Threatened | 4 | South America |
| 8809 | Mungbam | Niger-Congo | Atlantic-Congo | 2000 | Threatened | 4 | Africa |
| 2980 | Munichi | Isolate | South American | 0 | Dormant | 9 | South America |
| 10574 | Muniwara | Torricelli | Marienberg Hills | 826 | Endangered | 5 | Pacific |
| 4690 | Munji | Indo-European | Indo-Iranian | 3770 | Threatened | 4 | Near East |
| 4698 | Munkip | Trans-New Guinea | Finisterre-Huon | 12 | Severely Endangered | 6 | Pacific |
| 3423 | Munsee | Algic | Algonquian | Critically Endangered | 7 | North America | |
| 2274 | Murik | Lower Sepik-Ramu | Lower Sepik | 1256 | Threatened | 4 | Pacific |
| 4613 | Murle | Surmic | Southwest Surmic | 60200 | Vulnerable | 3 | Africa |
| 2551 | Murrinh-patha | Southern Daly | Threatened | 4 | Australia | ||
| 2679 | Mursi | Surmic | Southeast Surmic | 3278 | Threatened | 4 | Africa |
| 1858 | Murui Huitoto | Witotoan | 3000 | Threatened | 4 | South America | |
| 3133 | Muruwari | Pama-Nyungan | Muruwaric | 1 | Critically Endangered | 7 | Australia |
| 5052 | Mushungulu | Niger-Congo | Atlantic-Congo | 23000 | Vulnerable | 3 | Africa |
| 2007 | Muskogee | Muskogean | 4200 | Severely Endangered | 6 | North America | |
| 3041 | Muslim Tat | Indo-European | Indo-Iranian | 5000 | Severely Endangered | 6 | Caucasus; Europe; Near East; East Asia |
| 2276 | Musom | Austronesian | Malayo-Polynesian | 219 | Endangered | 5 | Pacific |
| 2277 | Mussau-Emira | Austronesian | Malayo-Polynesian | 3651 | Threatened | 4 | Pacific |
| 5609 | Muya | Sino-Tibetan | Qiangic | 15000 | Vulnerable | 3 | East Asia |
| 3174 | Muzi | Sino-Tibetan | Lolo-Burmese | 10000 | Threatened | 4 | East Asia |
| 303 | Mvanip | Niger-Congo | Atlantic-Congo | 100 | Threatened | 4 | Africa |
| 1166 | O'odham | Uto-Aztecan | Southern Uto-Aztecan | 15000 | Vulnerable | 3 | North America; Mexico, Central America, Caribbean |
| 626 | Oaxaca Zoque | Mixe-Zoquean | Zoquean | 5216 | Threatened | 4 | Mexico, Central America, Caribbean |
| 4912 | Oblo | Niger-Congo | Atlantic-Congo | 0 | Dormant | 9 | Africa |
| 2728 | Obokuitai | Lakes Plain | 120 | Endangered | 5 | Southeast Asia | |
| 6036 | Obulom | Niger-Congo | Atlantic-Congo | 3420 | Threatened | 4 | Africa |
| 1855 | Ocaina | Witotoan | 50 | Critically Endangered | 7 | South America | |
| 8791 | Ocotlán | Otomanguean | Zapotecan | 15000 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4913 | Ocuiltec | Otomanguean | Otopamean | 737 | Endangered | 5 | Mexico, Central America, Caribbean |
| 4399 | Odoodee | Trans-New Guinea | East Strickland | 490 | Endangered | 5 | Pacific |
| 4914 | Odut | Niger-Congo | Atlantic-Congo | 20 | Severely Endangered | 6 | Africa |
| 1740 | Ofayé | Isolate | South American | 12 | Severely Endangered | 6 | South America |
| 2732 | Oirata | Timor-Alor-Pantar | East Timor | 1220 | Threatened | 4 | Southeast Asia |
| 2974 | Oji-Cree | Algic | Algonquian | 6110 | Vulnerable | 3 | North America |
| 1223 | Samre | Austro-Asiatic | Pearic | 25 | Critically Endangered | 7 | Southeast Asia |
| 3116 | San Agustín Mixtepec Zapotec | Otomanguean | Zapotecan | 59 | Severely Endangered | 6 | Mexico, Central America, Caribbean |
| 7409 | San Francisco Bay Costanoan | Utian | Costanoan | Awakening | 8 | North America | |
| 8123 | San Martín Quechua | Quechuan | Quechua IIB | 15000 | Severely Endangered | 6 | South America |
| 5360 | San Miguel Creole French | Pidgin or Creole | French based | 3 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 2752 | Sanapaná | Enlhet-Enenlhet (Mascoyan) | 1500 | Endangered | 5 | South America | |
| 2826 | Sandawe | Isolate | African | 60000 | Vulnerable | 3 | Africa |
| 9251 | Sangisari | Indo-European | Indo-Iranian | 36000 | Vulnerable | 3 | Near East |
| 5190 | Sangkong | Sino-Tibetan | Lolo-Burmese | 2000 | Threatened | 4 | East Asia |
| 7254 | Sanie | Sino-Tibetan | Lolo-Burmese | 8000 | Severely Endangered | 6 | East Asia |
| 10622 | Saniyo-Hiyewe | Sepik | Sepik Hill | 644 | Endangered | 5 | Pacific |
| 2919 | Santiago del Estero Quechua | Quechuan | Quechua IIC | 70000 | Vulnerable | 3 | South America |
| 2750 | Sanumá | Yanomaman | 3497 | Threatened | 4 | South America | |
| 2921 | Tapiete | Tupian | Tupi-Guaranian | 207 | Endangered | 5 | South America |
| 2168 | Tapirapé | Tupian | Tupi-Guaranian | 564 | Endangered | 5 | South America |
| 3453 | Tarahumara | Uto-Aztecan | Southern Uto-Aztecan | 85018 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3504 | Tarao Naga | Sino-Tibetan | Kukish | 870 | Endangered | 5 | South Asia |
| 2167 | Tariana | Arawakan | Northern Arawakan | 90 | Critically Endangered | 7 | South America |
| 2790 | Tarpia | Austronesian | Malayo-Polynesian | 564 | Endangered | 5 | Southeast Asia |
| 6969 | Taruma | Isolate | South American | Critically Endangered | 7 | South America | |
| 5005 | Tasawaq | Songhay | 6000 | Threatened | 4 | Africa | |
| 3530 | Tasmate | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 2166 | Tatuyo | Tucanoan | Eastern Tucanoan | 331 | Endangered | 5 | South America |
| 2691 | Taulil | East New Britain | Taulili | 800 | Endangered | 5 | Pacific |
| 10757 | Taungurung | Pama-Nyungan, Kulin | Awakening | 8 | Australia | ||
| 2791 | Tause | Lakes Plain | 300 | Endangered | 5 | Southeast Asia | |
| 2163 | Taushiro | Isolate | South American | 1 | Critically Endangered | 7 | South America |
| 1411 | Taworta | Lakes Plain | 140 | Endangered | 5 | Southeast Asia | |
| 3525 | Tay Khang | Tai-Kadai | Kam-Tai | 200 | Endangered | 5 | Southeast Asia |
| 5180 | Tazhi | Sino-Tibetan | Lolo-Burmese | Endangered | 5 | East Asia | |
| 286 | Taznatit | Afro-Asiatic | Berber | 40000 | Vulnerable | 3 | Africa |
| 1447 | Tāłtān (Tahltan) | Athabaskan-Eyak-Tlingit | Athabaskan | 43 | Critically Endangered | 7 | North America |
| 5107 | Tchitchege | Niger-Congo | Atlantic-Congo | 2000 | Threatened | 4 | Africa |
| 301 | Tchumbuli | Niger-Congo | Atlantic-Congo | 1838 | Severely Endangered | 6 | Africa |
| 2792 | Te'un | Austronesian | Malayo-Polynesian | 1200 | Threatened | 4 | Southeast Asia |
| 2453 | Teanu | Austronesian | Malayo-Polynesian | Severely Endangered | 6 | Pacific | |
| 7192 | Tebul Sign Language | Sign Language | African | 500 | Endangered | 5 | Africa |
| 8735 | Tebul Ure | Niger-Congo | Dogon | 3500 | Vulnerable | 3 | Africa |
| 3496 | Teco | Mayan | Mamean | 5900 | Threatened | 4 | Mexico, Central America, Caribbean |
| 4831 | Tedaga | Saharan | Tebu | 42500 | Vulnerable | 3 | Africa |
| 5093 | Tefaro | East Geelvink Bay | 100 | Endangered | 5 | Southeast Asia | |
| 182 | Tegali | Niger-Congo | Rashad | 35700 | Vulnerable | 3 | Africa |
| 2160 | Tehuelche | Chonan | Continental Chonan | 2 | Critically Endangered | 7 | South America |
| 2087 | Teiwa | Timor-Alor-Pantar | 4000 | Endangered | 5 | Southeast Asia | |
| 3114 | Tejalapan Zapotec | Otomanguean | Zapotecan | 120 | Endangered | 5 | Mexico, Central America, Caribbean |
| 10675 | Telefol | Telefol | 4500 | Threatened | 4 | Pacific | |
| 2158 | Tembé | Tupian | Tupi-Guaranian | 60 | Severely Endangered | 6 | South America |
| 5095 | Temein | Temein | 13000 | Vulnerable | 3 | Africa | |
| 5100 | Temiar | Austro-Asiatic | Aslian | Vulnerable | 3 | Southeast Asia | |
| 3532 | Temoq | Austro-Asiatic | Aslian | 300 | Endangered | 5 | Southeast Asia |
| 3528 | Temuan | Austronesian | Malayo-Polynesian | 8000 | Threatened | 4 | Southeast Asia |
| 2155 | Tenharín | Tupian | Tupi-Guaranian | 350 | Endangered | 5 | South America |
| 1267 | Mah Meri | Austro-Asiatic | Aslian | 2896 | Threatened | 4 | Southeast Asia |
| 3019 | Maha | Afro-Asiatic | Chadic | 10000 | Vulnerable | 3 | Africa |
| 5660 | Mahasu Pahari | Indo-European | Indo-Iranian | 500000 | At risk | 2 | South Asia |
| 528 | Mahongwe | Niger-Congo | Atlantic-Congo | 1000 | Endangered | 5 | Africa |
| 4567 | Mahwa | Afro-Asiatic | Chadic | 6560 | Threatened | 4 | Africa |
| 4884 | Maidu | Maiduan | 0 | Dormant | 9 | North America | |
| 4668 | Majhi | Indo-European | Indo-Iranian | 24422 | Endangered | 5 | South Asia |
| 1433 | Mak (China) | Tai-Kadai | Kam-Tai | 5000 | Endangered | 5 | East Asia |
| 4948 | Mak (Nigeria) | Niger-Congo | Atlantic-Congo | 5690 | Threatened | 4 | Africa |
| 3020 | Maká | Matacoan | 1042 | Threatened | 4 | South America | |
| 1930 | Makah | Wakashan | Southern Wakashan | Awakening | 8 | North America | |
| 4646 | Maklew | Bulaka River | 120 | Endangered | 5 | Southeast Asia | |
| 3018 | Mako | Saliban | 1078 | Vulnerable | 3 | South America | |
| 2268 | Makolkol | East New Britain | Baining | 0 | Dormant | 9 | Pacific |
| 2710 | Maku'a | Austronesian | Malayo-Polynesian | 50 | Critically Endangered | 7 | Pacific |
| 3016 | Makurap | Tupian | Tuparian | 45 | Severely Endangered | 6 | South America |
| 3015 | Makushi | Cariban | Venezuelan | 7830 | Threatened | 4 | South America |
| 5070 | Makwe | Niger-Congo | Atlantic-Congo | 32000 | Vulnerable | 3 | Africa |
| 4670 | Mal Paharia | Indo-European | Indo-Iranian | 51000 | Vulnerable | 3 | South Asia |
| 5026 | Mala | Niger-Congo | Atlantic-Congo | 6630 | Threatened | 4 | Africa |
| 10860 | Malabar Indo-Portuguese Creole | Pidgin or Creole | Portuguese based | 6 | Critically Endangered | 7 | South Asia |
| 1459 | Malaccan Creole Portuguese | Pidgin or Creole | Portuguese based | 2150 | Endangered | 5 | Southeast Asia |
| 5945 | Malak Malak | Northern Daly | 11 | Critically Endangered | 7 | Australia | |
| 3990 | Mamaindé | Nambikwaran | 250 | Endangered | 5 | South America | |
| 4648 | Mambae | Austronesian | Malayo-Polynesian | 131000 | At risk | 2 | Pacific |
| 2345 | Mambai | Niger-Congo | Atlantic-Congo | 15000 | Vulnerable | 3 | Africa |
| 9929 | Mamboru | Austronesian | Malayo-Polynesian | 13000 | Endangered | 5 | Southeast Asia |
| 4686 | Man Met | Austro-Asiatic | Palaungic | 1000 | Threatened | 4 | East Asia |
| 10526 | Manam | Austronesian | Malayo-Polynesian | 6000 | Threatened | 4 | Pacific |
| 10609 | Manambu | Sepik | Ndu | 2800 | Threatened | 4 | Pacific |
| 7290 | Manange | Sino-Tibetan | Tibeto-Burman | 3000 | Threatened | 4 | South Asia |
| 4979 | Manat | Trans-New Guinea | Madang | 50 | Severely Endangered | 6 | Pacific |
| 1205 | Manchu | Tungusic | Southern Tungusic | 20 | Critically Endangered | 7 | East Asia |
| 3383 | Manchurian Kirghiz | Turkic | Siberian Turkic | 10 | Critically Endangered | 7 | East Asia |
| 2049 | Mand | Trans-New Guinea | Madang | 8 | Critically Endangered | 7 | Pacific |
| 1913 | Manda (Australia) | Western Daly | 25 | Critically Endangered | 7 | Australia | |
| 4653 | Manda (India) | Dravidian | South Dravidian | 4040 | Threatened | 4 | South Asia |
| 4650 | Manda (Tanzania) | Niger-Congo | Atlantic-Congo | 22000 | Vulnerable | 3 | Africa |
| 3014 | Mandahuaca | Arawakan | Northern Arawakan | 0 | Dormant | 9 | South America |
| 865 | Mandan | Siouan | 0 | Dormant | 9 | North America | |
| 3136 | Mandandanyi | Pama-Nyungan | Maric | 1 | Critically Endangered | 7 | Australia |
| 2712 | Mander | Orya-Tor | Tor | 20 | Severely Endangered | 6 | Southeast Asia |
| 5563 | Mandjalpingu | Pama-Nyungan | Yolngu | 30 | Severely Endangered | 6 | Australia |
| 10666 | Manem | Border | Waris | 400 | Endangered | 5 | Southeast Asia; Pacific |
| 1236 | Mang | Austro-Asiatic | Mangic | 1750 | Severely Endangered | 6 | Southeast Asia; East Asia |
| 5934 | Mangala | Pama-Nyungan | Marrngu | 20 | Severely Endangered | 6 | Australia |
| 3572 | Mangareva | Austronesian | Malayo-Polynesian | 900 | Endangered | 5 | Pacific |
| 1914 | Mangarrayi | Gunwinyguan | Maran | 50 | Critically Endangered | 7 | Australia |
| 3130 | Mangas | Afro-Asiatic | Chadic | 180 | Endangered | 5 | Africa |
| 4742 | Mangayat | Niger-Congo | Atlantic-Congo | 400 | Endangered | 5 | Africa |
| 3138 | Mangerr | Giimbiyu | 1 | Critically Endangered | 7 | Australia | |
| 364 | Mani | Niger-Congo | Atlantic-Congo | 200 | Severely Endangered | 6 | Africa |
| 3522 | Maniq | Austro-Asiatic | Aslian | 300 | Endangered | 5 | Southeast Asia |
| 6696 | Manjiljarra | Pama-Nyungan | Wati | 500 | Endangered | 5 | Australia |
| 8989 | Mansaka | Austronesian | Malayo-Polynesian | 57800 | Vulnerable | 3 | Southeast Asia |
| 7715 | Mansoanka | Niger-Congo | Atlantic-Congo | 17500 | Vulnerable | 3 | Africa |
| 8601 | Manx | Indo-European | Celtic | Awakening | 8 | Europe | |
| 5666 | Mao Naga | Sino-Tibetan | Angami-Pochuri | 77810 | Vulnerable | 3 | South Asia |
| 4741 | Mao of Bambeshi | Afro-Asiatic | Omotic | 5000 | Threatened | 4 | Africa |
| 1432 | Maonan | Tai-Kadai | Kam-Tai | 70000 | Threatened | 4 | East Asia |
| 4592 | Maore Comorian | Niger-Congo | Atlantic-Congo | Threatened | 4 | Africa | |
| 3571 | Māori | Austronesian | Malayo-Polynesian | 127000 | Endangered | 5 | Pacific |
| 4677 | Mape | Trans-New Guinea | Finisterre-Huon | 5120 | Threatened | 4 | Pacific |
| 2714 | Mapia | Austronesian | Malayo-Polynesian | 0 | Dormant | 9 | Southeast Asia |
| 3012 | Mapoyo | Cariban | Venezuelan | 3 | Critically Endangered | 7 | South America |
| 7849 | Mapudungun | Araucanian | 258413 | Threatened | 4 | South America | |
| 4708 | Mara Chin | Sino-Tibetan | Kukish | 42000 | Vulnerable | 3 | South Asia; Southeast Asia |
| 3376 | Maraghei | Indo-European | Indo-Iranian | Near East | |||
| 5667 | Maram Naga | Sino-Tibetan | Zemeic | 37340 | Vulnerable | 3 | South Asia |
| 2053 | Mardin Sign Language | Sign Language | Near Eastern | 40 | Severely Endangered | 6 | Europe |
| 2715 | Maremgi | Orya-Tor | Tor | 55 | Severely Endangered | 6 | Southeast Asia |
| 3139 | Margany | Pama-Nyungan | Maric | 1 | Critically Endangered | 7 | Australia |
| 4627 | Mari | Sepik | Sepik Hill | 80 | Endangered | 5 | Pacific |
| 1929 | Maricopa | Cochimi-Yuman | Yuman | 100 | Severely Endangered | 6 | North America |
| 1907 | Maridan | Western Daly | 20 | Critically Endangered | 7 | Australia | |
| 1908 | Maridjabin | Western Daly | 20 | Critically Endangered | 7 | Australia | |
| 1909 | Marimanindji | Western Daly | 15 | Critically Endangered | 7 | Australia | |
| 4626 | Maring | Trans-New Guinea | Chimbu-Wahgi | 11000 | Vulnerable | 3 | Pacific |
| 5668 | Maring Naga | Sino-Tibetan | Tangkhul | 22326 | Threatened | 4 | South Asia |
| 4704 | Marino | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Pacific |
| 4896 | Maritime Sign Language | Sign Language | North American | 100 | Critically Endangered | 7 | North America |
| 2327 | Mariyedi | Western Daly | 20 | Critically Endangered | 7 | Australia | |
| 2719 | Marori | Isolate | Pacific | 150 | Endangered | 5 | Southeast Asia |
| 1915 | Marra | Gunwinyguan | Maran | 5 | Critically Endangered | 7 | Australia |
| 4655 | Marrgu | Unclassified | Iwaidjan? | 1 | Critically Endangered | 7 | Australia |
| 2329 | Marriammu | Western Daly | 6 | Critically Endangered | 7 | Australia | |
| 1910 | Marringarr | Western Daly | 35 | Critically Endangered | 7 | Australia | |
| 2325 | Marrithiyel | Western Daly | 25 | Critically Endangered | 7 | Australia | |
| 7209 | Martha's Vineyard Sign Language | Sign Language | North American | Dormant | 9 | North America | |
| 6270 | Martu Wangka | Pama-Nyungan | Wati | 900 | Endangered | 5 | Australia |
| 3380 | Martuthunira | Pama-Nyungan | Ngayarta | 5 | Critically Endangered | 7 | Australia |
| 3008 | Marubo | Pano-Tacanan | Mainline | 1043 | Threatened | 4 | South America |
| 2716 | Masep | Austronesian | Malayo-Polynesian | 25 | Severely Endangered | 6 | Southeast Asia |
| 3006 | Mashco Piro | Arawakan | Southern Arawakan | 400 | Endangered | 5 | South America |
| 4309 | Masimasi | Austronesian | Malayo-Polynesian | 10 | Severely Endangered | 6 | Southeast Asia |
| 2306 | Maslam | Afro-Asiatic | Chadic | 5500 | Threatened | 4 | Africa |
| 577 | Massalat | Maban | 10 | Severely Endangered | 6 | Africa | |
| 6789 | Mathi-Mathi | Pama-Nyungan | Kulinic | Awakening | 8 | Australia | |
| 2330 | Mati Ke | Western Daly | 2 | Critically Endangered | 7 | Australia | |
| 1731 | Matís | Pano-Tacanan | Mayoruna | 280 | Endangered | 5 | South America |
| 6150 | Matlatzinca | Otomanguean | Otopamean | 1134 | Threatened | 4 | Mexico, Central America, Caribbean |
| 1911 | Matngele | Eastern Daly | 18 | Critically Endangered | 7 | Australia | |
| 1732 | Matsés | Pano-Tacanan | Mayoruna | 2200 | Threatened | 4 | South America |
| 1310 | Mavea | Austronesian | Malayo-Polynesian | 32 | Critically Endangered | 7 | Pacific |
| 2270 | Mawak | Trans-New Guinea | Madang | 25 | Severely Endangered | 6 | Pacific |
| 4633 | Mawan | Trans-New Guinea | Madang | 470 | Endangered | 5 | Pacific |
| 5162 | Mawayana | Arawakan | Northern Arawakan | 2 | Critically Endangered | 7 | South America |
| 1851 | Mawé | Tupian | 6219 | Threatened | 4 | South America | |
| 4647 | Mawes | Isolate | 693 | Endangered | 5 | Southeast Asia | |
| 2546 | Mawng | Iwaidjan | 300 | Vulnerable | 3 | Australia | |
| 2997 | Maxakalí | Maxakalian | 1271 | Threatened | 4 | South America | |
| 2907 | Maxineri | Arawakan | Southern Arawakan | 950 | Endangered | 5 | South America |
| 5883 | May | Austro-Asiatic | Vietic | 500 | Endangered | 5 | Southeast Asia |
| 10580 | May River Iwam | Sepik | Iwam | 3000 | Threatened | 4 | Pacific |
| 4009 | Maya | Pama-Nyungan | Kartu | 0 | Dormant | 9 | Australia |
| 6698 | Mayi-Kulan | Pama-Nyungan | Mayabic | 0 | Dormant | 9 | Australia |
| 3237 | Mayi-Kutuna | Pama-Nyungan | Mayabic | 2 | Critically Endangered | 7 | Australia |
| 6699 | Mayi-Thakurti | Pama-Nyungan | Mayabic | 0 | Dormant | 9 | Australia |
| 10763 | Mayi-Yapi | Pama-Nyungan | Paman | Dormant | 9 | Australia | |
| 4644 | Mayo | Uto-Aztecan | Southern Uto-Aztecan | 32702 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3379 | Mbabaram | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 578 | Mbara (Chad) | Afro-Asiatic | Chadic | 1000 | Endangered | 5 | Africa |
| 3132 | Mbariman-Gudhinma | Pama-Nyungan | Paman | 3 | Critically Endangered | 7 | Australia |
| 6700 | Mbiywom | Pama-Nyungan | Paman | 0 | Dormant | 9 | Australia |
| 6031 | Mbonga | Niger-Congo | Atlantic-Congo | 1490 | Threatened | 4 | Africa |
| 5027 | Mbongno | Niger-Congo | Atlantic-Congo | Threatened | 4 | Africa | |
| 1134 | Mbowe | Niger-Congo | Atlantic-Congo | 2690 | Threatened | 4 | Africa |
| 4669 | Mbre | Niger-Congo | Atlantic-Congo | 200 | Endangered | 5 | Africa |
| 9049 | Mbugu | Mixed Language | Bantu-Cushitic | 7000 | Threatened | 4 | Africa |
| 7714 | Mbulungish | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 10792 | Mbwenelang | Austronesian | Malayo-Polynesian | 10 | Critically Endangered | 7 | Pacific |
| 2992 | Mbyá | Tupian | Tupi-Guaranian | 19924 | Vulnerable | 3 | South America |
| 3569 | Mea | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 10641 | Meakambut | Arafundi | 100 | Endangered | 5 | Pacific | |
| 3098 | Mebengokre | Jean | Northern Je | 7266 | Threatened | 4 | South America |
| 3382 | Megleno-Romanian | Indo-European | Italic | 5000 | Threatened | 4 | Europe |
| 10597 | Mehek | Sepik | Tama | 4027 | Threatened | 4 | Pacific |
| 3218 | Mehináku | Arawakan | Southern Arawakan | 227 | Endangered | 5 | South America |
| 4202 | Mehri | Afro-Asiatic | Semitic | 100000 | At risk | 2 | Near East |
| 2988 | Mekéns | Tupian | Tuparian | 22 | Critically Endangered | 7 | South America |
| 10634 | Mekmek | Yuat | 1036 | Threatened | 4 | Pacific | |
| 10605 | Mende | Sepik | Nukuma | 5057 | Threatened | 4 | Pacific |
| 1384 | Ménik | Niger-Congo | Atlantic-Congo | Threatened | 4 | Africa | |
| 6329 | Menka | Niger-Congo | Atlantic-Congo | 5200 | Vulnerable | 3 | Africa |
| 1926 | Menominee | Algic | Algonquian | 35 | Severely Endangered | 6 | North America |
| 4732 | Meoswar | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Southeast Asia |
| 4693 | Mer (Indonesia) | Trans-New Guinea | Mairasi | 85 | Severely Endangered | 6 | Southeast Asia |
| 10780 | Merei | Austronesian | Malayo-Polynesian | 400 | Endangered | 5 | Pacific |
| 2548 | Meriam | Eastern Trans-Fly | 320 | Endangered | 5 | Australia | |
| 1925 | Mescalero-Chiricahua | Athabaskan-Eyak-Tlingit | Athabaskan | 1500 | Threatened | 4 | North America |
| 10861 | Mesmes | Afro-Asiatic | West Semitic | Dormant | 9 | Africa | |
| 6996 | Mexican Sign Language | Sign Language | Mexican, Central American, or Caribbean | 93500 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 10071 | Meymai | Indo-European | Indo-Iranian | 2000 | Threatened | 4 | Near East |
| 4934 | Mezquital Otomí | Otomanguean | Otopamean | 100000 | At risk | 2 | Mexico, Central America, Caribbean |
| 1923 | Mi'kmaq | Algic | Algonquian | 8145 | Threatened | 4 | North America |
| 1924 | Miami-Illinois | Algic | Algonquian | Awakening | 8 | North America | |
| 10869 | Minderico | Ibero-Romance | Indo-European | 150 | Severely Endangered | 6 | Europe |
| 2271 | Mindiri | Austronesian | Malayo-Polynesian | 90 | Endangered | 5 | Pacific |
| 5028 | Mingang Doso | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 10906 | Mingrelian | South Caucasian | 344000 | At risk | 2 | Caucasus | |
| 10471 | Minhe Monguor | Mongolic | Shirongolic | 25000 | Vulnerable | 3 | East Asia |
| 4282 | Minica Huitoto | Witotoan | 7343 | Threatened | 4 | South America | |
| 6790 | Minjungbal | Pama-Nyungan | Bandjalangic | 0 | Dormant | 9 | Australia |
| 1258 | Minriq | Austro-Asiatic | Aslian | 145 | Endangered | 5 | Southeast Asia |
| 4745 | Mintil | Austro-Asiatic | Aslian | 40 | Severely Endangered | 6 | Southeast Asia |
| 7172 | Minyong | Sino-Tibetan | Tani | 20000 | Vulnerable | 3 | South Asia |
| 3191 | Miqie Yi | Sino-Tibetan | Lolo-Burmese | 8000 | Threatened | 4 | East Asia |
| 4734 | Miranda do Douro | Indo-European | Italic | 15000 | Vulnerable | 3 | Europe |
| 4029 | Mirití | Tucanoan | Eastern Tucanoan | 0 | Dormant | 9 | South America |
| 2549 | Miriwoong | Jarrakan | Critically Endangered | 7 | Australia | ||
| 6272 | Mirniny | Pama-Nyungan | Mirning | 1 | Critically Endangered | 7 | Australia |
| 3538 | Misantla Totonac | Totonacan | Totonac | 500 | Endangered | 5 | Mexico, Central America, Caribbean |
| 4707 | Mising | Sino-Tibetan | Tani | 551224 | At risk | 2 | South Asia |
| 4660 | Mískito | Misumalpan | 150000 | At risk | 2 | Mexico, Central America, Caribbean | |
| 6704 | Mithaka | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 2064 | Mixed Great Andamanese | Great Andamanese | 7 | Critically Endangered | 7 | South Asia | |
| 10531 | Mixtepec Mixtec | Otomanguean | Mixtecan | 9170 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3124 | Mixtepec Zapotec | Otomanguean | Zapotecan | 7000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 10633 | Miyak | Yuat | 548 | Endangered | 5 | Pacific | |
| 4730 | Miyako | Japonic | Ryukyuan | 12500 | Severely Endangered | 6 | East Asia |
| 5077 | Miyobe | Niger-Congo | Atlantic-Congo | 8700 | Threatened | 4 | Africa |
| 4687 | Mkir | Austronesian | Malayo-Polynesian | 180 | Endangered | 5 | Pacific |
| 1240 | Mlabri | Austro-Asiatic | Khmuic | 400 | Threatened | 4 | Southeast Asia |
| 9229 | Mlaḥsô | Afro-Asiatic | Semitic | 0 | Dormant | 9 | Europe; Near East |
| 2280 | Mlap | Nimboran | 300 | Endangered | 5 | Southeast Asia | |
| 4679 | Mlomp | Niger-Congo | Atlantic-Congo | 5400 | Threatened | 4 | Africa |
| 5194 | Mo'ang | Sino-Tibetan | Lolo-Burmese | 5000 | Threatened | 4 | Southeast Asia; East Asia |
| 4194 | Mo'da | Central Sudanic | Bongo-Bagirmi | 600 | Endangered | 5 | Africa |
| 4658 | Mócheno | Indo-European | Germanic | 1900 | Threatened | 4 | Europe |
| 141 | Mocho' | Mayan | Q’anjob’alan-Chujean | 30 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 1847 | Mocoví | Guaicuruan | 2780 | Threatened | 4 | South America | |
| 2272 | Moere | Trans-New Guinea | Madang | 50 | Severely Endangered | 6 | Pacific |
| 4657 | Mogholi | Mongolic | 0 | Dormant | 9 | Near East | |
| 1668 | Mohawk | Iroquoian | Northern Iroquoian | 3850 | Endangered | 5 | North America |
| 10725 | Moi (Maluku, Indonesia) | North Halmahera | 12000 | Vulnerable | 3 | Southeast Asia | |
| 10774 | Moiso | Austronesian | Malayo-Polynesian | 100 | Endangered | 5 | Pacific |
| 1667 | Mojave | Cochimi-Yuman | Yuman | 100 | Critically Endangered | 7 | North America |
| 3179 | Moji | Sino-Tibetan | Lolo-Burmese | 400 | Vulnerable | 3 | East Asia |
| 2985 | Mok | Austro-Asiatic | Palaungic | Southeast Asia; East Asia | |||
| 1987 | Moken | Austronesian | Malayo-Polynesian | Endangered | 5 | Southeast Asia | |
| 4643 | Mokerang | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Pacific |
| 4672 | Mokilese | Austronesian | Malayo-Polynesian | 1230 | Threatened | 4 | Pacific |
| 4673 | Moklen | Austronesian | Malayo-Polynesian | Endangered | 5 | Southeast Asia | |
| 4636 | Moksha | Uralic | Mordvin | 200000 | At risk | 2 | Caucasus; Europe; East Asia |
| 3134 | Molo | Eastern Jebel | 100 | Endangered | 5 | Africa | |
| 10519 | Momare | Trans-New Guinea | Finisterre-Huon | 374 | Endangered | 5 | Pacific |
| 8739 | Mombo | Niger-Congo | Dogon | 19000 | Vulnerable | 3 | Africa |
| 4715 | Mombum | Trans-New Guinea | Mombum | 250 | Endangered | 5 | Southeast Asia |
| 4682 | Momina | Trans-New Guinea | Somahai | 200 | Endangered | 5 | Southeast Asia |
| 2717 | Momuna | Trans-New Guinea | Somahai | 2000 | Threatened | 4 | Southeast Asia |
| 2753 | Mondé | Tupian | Mondean | 0 | Dormant | 9 | South America |
| 10518 | Mongol-Kaimba | Mongol-Langam-Ulwa | 338 | Endangered | 5 | Pacific | |
| 553 | Mono (Cameroon) | Niger-Congo | Atlantic-Congo | 300 | Severely Endangered | 6 | Africa |
| 4689 | Mono (Democratic Republic of the Congo) | Niger-Congo | Atlantic-Congo | 62102 | Vulnerable | 3 | Africa |
| 4719 | Mono (Solomon Islands) | Austronesian | Malayo-Polynesian | 3340 | Threatened | 4 | Pacific |
| 4692 | Mono (United States) | Uto-Aztecan | Northern Uto-Aztecan | 40 | Critically Endangered | 7 | North America |
| 10577 | Monumbo | Torricelli | Bogia | 450 | Endangered | 5 | Pacific |
| 4599 | Monzombo | Niger-Congo | Atlantic-Congo | 12600 | Vulnerable | 3 | Africa |
| 4694 | Mopán | Mayan | Yucatecan | 12500 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 2718 | Mor (Bomberai Peninsula, Indonesia) | Isolate | Pacific | 60 | Severely Endangered | 6 | Southeast Asia |
| 1460 | Mor (Mor Islands, Indonesia) | Austronesian | Malayo-Polynesian | 700 | Endangered | 5 | Southeast Asia |
| 4711 | Mores | Austronesian | Malayo-Polynesian | 150 | Endangered | 5 | Pacific |
| 4717 | Moresada | Trans-New Guinea | Madang | 200 | Endangered | 5 | Pacific |
| 4695 | Moro | Niger-Congo | Heiban | 30000 | Vulnerable | 3 | Africa |
| 4645 | Morokodo | Central Sudanic | Bongo-Bagirmi | 3400 | Threatened | 4 | Africa |
| 4709 | Mortlockese | Austronesian | Malayo-Polynesian | 5900 | Threatened | 4 | Pacific |
| 2428 | Mosetén | Isolate | Mosetenan | 4800 | Vulnerable | 3 | South America |
| 2273 | Mosimo | Trans-New Guinea | Madang | 50 | Severely Endangered | 6 | Pacific |
| 7372 | Mota | Austronesian | Malayo-Polynesian | 700 | Endangered | 5 | Pacific |
| 4680 | Motlav | Austronesian | Malayo-Polynesian | 2100 | Vulnerable | 3 | Pacific |
| 2832 | Mount Iraya Agta | Austronesian | Malayo-Polynesian | Critically Endangered | 7 | Southeast Asia | |
| 1853 | Movima | Isolate | South American | 1173 | Threatened | 4 | South America |
| 4699 | Mpi | Sino-Tibetan | Lolo-Burmese | 1200 | Endangered | 5 | Southeast Asia |
| 3725 | Mpra | Unclassified | Niger-Congo? | Dormant | 9 | Africa | |
| 10731 | Mpur | Isolate | Pacific | 7000 | Threatened | 4 | Southeast Asia |
| 4710 | Mru | Sino-Tibetan | Mruic | 50000 | Vulnerable | 3 | South Asia; Southeast Asia |
| 6032 | Mser | Afro-Asiatic | Chadic | 500 | Severely Endangered | 6 | Africa |
| 5185 | Muda | Sino-Tibetan | Lolo-Burmese | 2000 | Threatened | 4 | East Asia |
| 2550 | Mudburra | Pama-Nyungan | Ngumpin-Yapa | 50 | Critically Endangered | 7 | Australia |
| 4188 | Mudhili Gadaba | Dravidian | Central Dravidian | 8000 | Threatened | 4 | South Asia |
| 564 | Ngombe | Niger-Congo | Atlantic-Congo | 1400 | Threatened | 4 | Africa |
| 4892 | Ngomburr | Unclassified | Darwin Region? | 1 | Critically Endangered | 7 | Australia |
| 555 | Ngong | Niger-Congo | Atlantic-Congo | 2 | Critically Endangered | 7 | Africa |
| 6717 | Ngumbarl | Nyulnyulan | Eastern Nyulnyulan | 0 | Dormant | 9 | Australia |
| 6682 | Ngunawal | Pama-Nyungan | Yuin-Kuric | Awakening | 8 | Australia | |
| 1217 | Nguôn | Austro-Asiatic | Vietic | 1000 | Endangered | 5 | Southeast Asia |
| 4852 | Ngwaba | Afro-Asiatic | Chadic | 10000 | Vulnerable | 3 | Africa |
| 5965 | Nhanta | Pama-Nyungan | Kartu | 2 | Critically Endangered | 7 | Australia |
| 2971 | Nheengatú | Tupian | Tupi-Guaranian | 19060 | Endangered | 5 | South America |
| 6718 | Nhirrpi | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 4853 | Nhuwala | Pama-Nyungan | Ngayarta | 10 | Severely Endangered | 6 | Australia |
| 2744 | Padoe | Austronesian | Malayo-Polynesian | 6000 | Threatened | 4 | Southeast Asia |
| 2964 | Paez | Isolate | South American | 60000 | Vulnerable | 3 | South America |
| 10671 | Pagi | Border | Bewani | 1100 | Threatened | 4 | Pacific |
| 10595 | Pahi | Sepik | Tama | 598 | Endangered | 5 | Pacific |
| 7171 | Pailibo | Sino-Tibetan | Tani | 1000 | Endangered | 5 | South Asia |
| 1538 | Paipai | Cochimi-Yuman | Yuman | 100 | Severely Endangered | 6 | Mexico, Central America, Caribbean |
| 5678 | Paite Chin | Sino-Tibetan | Kukish | 64100 | Vulnerable | 3 | South Asia |
| 2729 | Paiter | Tupian | Mondean | 920 | Endangered | 5 | South America |
| 4972 | Pakanh | Pama-Nyungan | Paman | 10 | Severely Endangered | 6 | Australia |
| 10880 | Palawa Kani | Awakening | 8 | Australia | |||
| 4976 | Palenquero | Pidgin or Creole | Spanish based | 2000 | Endangered | 5 | South America |
| 3206 | Romagnol | Indo-European | Italic | 1500000 | Threatened | 4 | Europe |
| 5345 | Romam | Austro-Asiatic | Bahnaric | 250 | Endangered | 5 | Southeast Asia |
| 3262 | Romansch | Indo-European | Italic | 60000 | Vulnerable | 3 | Europe |
| 10659 | Romkun | Lower Sepik-Ramu | Ramu | 350 | Endangered | 5 | Pacific |
| 1856 | Rongga | Austronesian | Malayo-Polynesian | 4000 | Threatened | 4 | Southeast Asia |
| 5673 | Rongmei Naga | Sino-Tibetan | Zemeic | 59000 | Vulnerable | 3 | South Asia |
| 5685 | Rongpo | Sino-Tibetan | Tibeto-Kanauri | 12000 | Threatened | 4 | South Asia |
| 5876 | Ruc | Austro-Asiatic | Vietic | 250 | Endangered | 5 | Southeast Asia |
| 5332 | Rudbari | Indo-European | Indo-Iranian | Near East | |||
| 5350 | Ruga | Sino-Tibetan | Brahmaputran | Critically Endangered | 7 | South Asia | |
| 5651 | Mudu Koraga | Dravidian | South-Central Dravidian | 1000 | Threatened | 4 | South Asia |
| 10567 | Mufian | Torricelli | Arapeshan | 10646 | Vulnerable | 3 | Pacific |
| 2278 | Mwatebu | Austronesian | Malayo-Polynesian | 120 | Endangered | 5 | Pacific |
| 1135 | Mwenyi | Niger-Congo | Atlantic-Congo | 6000 | Threatened | 4 | Africa |
| 10766 | Mwesen | Austronesian | Malayo-Polynesian | 10 | Critically Endangered | 7 | Pacific |
| 5049 | Mwini | Niger-Congo | Atlantic-Congo | Endangered | 5 | Africa | |
| 5670 | Mzieme Naga | Sino-Tibetan | Zemeic | 29000 | Vulnerable | 3 | South Asia |
| 4772 | Na | Sino-Tibetan | Tani | 1500 | Threatened | 4 | South Asia |
| 3795 | Nachering | Sino-Tibetan | Kiranti | 10041 | Vulnerable | 3 | South Asia |
| 3966 | Nadëb | Nadehup | Eastern Makuan | 370 | Endangered | 5 | South America |
| 10720 | Nadouhua | Tai-Kadai | Hlai | Severely Endangered | 6 | East Asia | |
| 2317 | Nafi | Austronesian | Malayo-Polynesian | 160 | Endangered | 5 | Pacific |
| 4851 | Nagu | Austronesian | Malayo-Polynesian | 206 | Severely Endangered | 6 | Pacific |
| 10189 | Naha'ai | Austronesian | Malayo-Polynesian | 600 | Endangered | 5 | Pacific |
| 4854 | Nahari | Indo-European | Indo-Iranian | 20400 | Vulnerable | 3 | South Asia |
| 1374 | Nahavaq | Austronesian | Malayo-Polynesian | 700 | Endangered | 5 | Pacific |
| 10661 | Nai | Kwomtari-Nai | 454 | Endangered | 5 | Pacific | |
| 10798 | Najit | Austronesian | Malayo-Polynesian | 5 | Critically Endangered | 7 | Pacific |
| 4765 | Naka'ela | Austronesian | Malayo-Polynesian | 5 | Critically Endangered | 7 | Southeast Asia |
| 10695 | Nakai | Trans-New Guinea | Ok | Endangered | 5 | Southeast Asia | |
| 2552 | Nakara | Maningrida | 88 | Severely Endangered | 6 | Australia | |
| 4769 | Nake | Trans-New Guinea | Madang | 170 | Endangered | 5 | Pacific |
| 8909 | Naki | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 10664 | Nakwi | Left May | 216 | Endangered | 5 | Pacific | |
| 1463 | Nalu | Niger-Congo | Atlantic-Congo | 22000 | Vulnerable | 3 | Africa |
| 5132 | Naluo | Sino-Tibetan | Lolo-Burmese | 15000 | Vulnerable | 3 | East Asia |
| 4871 | Namat | Morehead-Upper Maro | 180 | Endangered | 5 | Pacific | |
| 10699 | Nambi | Torricelli | Palei | 484 | Endangered | 5 | Pacific |
| 2975 | Nambikwara | Nambikwaran | 721 | Endangered | 5 | South America | |
| 1885 | Nambya | Niger-Congo | Atlantic-Congo | Threatened | 4 | Africa | |
| 10600 | Namia | Sepik | Yellow River | 3500 | Vulnerable | 3 | Pacific |
| 5148 | Namla | Namla-Tofanma | 36 | Severely Endangered | 6 | Southeast Asia | |
| 2152 | Namo | Morehead-Upper Maro | 380 | Endangered | 5 | Pacific | |
| 4883 | Namonuito | Austronesian | Malayo-Polynesian | 940 | Endangered | 5 | Pacific |
| 21 | Namuyi | Sino-Tibetan | Naic | 5000 | Endangered | 5 | East Asia |
| 1206 | Nanai | Tungusic | Southern Tungusic | 180 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 2920 | Ñandeva | Tupian | Tupi-Guaranian | 19308 | Endangered | 5 | South America |
| 8733 | Nanga | Niger-Congo | Dogon | 3000 | Threatened | 4 | Africa |
| 2972 | Nanti | Arawakan | Southern Arawakan | 450 | Vulnerable | 3 | South America |
| 2720 | Napu | Austronesian | Malayo-Polynesian | 6000 | Threatened | 4 | Southeast Asia |
| 2034 | Nar Phu | Sino-Tibetan | Tamangic | 500 | Endangered | 5 | South Asia |
| 2721 | Narau | Kaure-Narau | 85 | Severely Endangered | 6 | Southeast Asia | |
| 6709 | Nari Nari | Pama-Nyungan | Kulinic | 0 | Dormant | 9 | Australia |
| 4524 | Narim | Surmic | Southwest Surmic | 3620 | Threatened | 4 | Africa |
| 2528 | Narmoris | Austronesian | Malayo-Polynesian | 120 | Endangered | 5 | Pacific |
| 10901 | Nda'nda' | Niger-Congo | Atlantic-Congo | 10000 | Vulnerable | 3 | Africa |
| 554 | Ndai | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 4590 | Ndam | Afro-Asiatic | Chadic | 6500 | Threatened | 4 | Africa |
| 4123 | Nding | Niger-Congo | Talodi | 3513 | Threatened | 4 | Africa |
| 2555 | Ndjebbana | Maningrida | 241 | Endangered | 5 | Australia | |
| 10442 | Ndoola | Niger-Congo | Atlantic-Congo | 10000 | Vulnerable | 3 | Africa |
| 304 | Ndunda | Niger-Congo | Atlantic-Congo | 350 | Endangered | 5 | Africa |
| 7710 | Ndut | Niger-Congo | Atlantic-Congo | 37500 | Vulnerable | 3 | Africa |
| 4866 | Ndyuka-Trio Pidgin | Pidgin or Creole | English based | 0 | Dormant | 9 | South America |
| 9409 | Nedebang | Timor-Alor-Pantar | 200 | Critically Endangered | 7 | Southeast Asia | |
| 2891 | Negidal | Tungusic | Northern Tungusic | 150 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 9011 | Nēhiyawēwin | Algic | Algonquian | 68 | Severely Endangered | 6 | North America |
| 3056 | Neku | Austronesian | Malayo-Polynesian | 220 | Endangered | 5 | Pacific |
| 3055 | Nemi | Austronesian | Malayo-Polynesian | 320 | Endangered | 5 | Pacific |
| 4890 | Nen | Morehead-Upper Maro | 250 | Endangered | 5 | Pacific | |
| 4659 | Neo-Mandaic | Afro-Asiatic | Semitic | 150 | Severely Endangered | 6 | Near East |
| 4464 | Nepali Kurux | Dravidian | North Dravidian | 28615 | Vulnerable | 3 | South Asia |
| 2089 | Nese | Austronesian | Malayo-Polynesian | 15 | Critically Endangered | 7 | Pacific |
| 8557 | New Bargut | Mongolic | Common Mongolic | Vulnerable | 3 | East Asia | |
| 1715 | Nez Perce | Sahaptian | 50 | Critically Endangered | 7 | North America | |
| 2556 | Ngaanyatjarra | Pama-Nyungan | Wati | 1300 | Threatened | 4 | Australia |
| 5449 | Ngaatjatjara | Pama-Nyungan | Wati | 12 | Severely Endangered | 6 | Australia |
| 4900 | Ngala | Sepik | Ndu | 136 | Endangered | 5 | Pacific |
| 10764 | Ngalakgan | Gunwinyguan | Dormant | 9 | Australia | ||
| 5546 | Ngaliwurru | Mirndi | 100 | Endangered | 5 | Australia | |
| 10696 | Ngalum | Trans-New Guinea | Ok | 18000 | Vulnerable | 3 | Southeast Asia; Pacific |
| 4885 | Ngamini | Pama-Nyungan | Karnic | 2 | Critically Endangered | 7 | Australia |
| 6352 | Ngamo | Afro-Asiatic | Chadic | 60000 | Vulnerable | 3 | Africa |
| 2909 | Trinitario | Arawakan | Southern Arawakan | 3140 | Threatened | 4 | South America |
| 2137 | Trió | Cariban | Guianan | 2456 | Threatened | 4 | South America |
| 6193 | Triqui | Otomanguean | Mixtecan | 25883 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1251 | Triw | Austro-Asiatic | Katuic | 1328 | Threatened | 4 | Southeast Asia |
| 2132 | Trumai | Isolate | South American | 50 | Critically Endangered | 7 | South America |
| 2690 | Ts'amay | Afro-Asiatic | Cushitic | 8621 | Threatened | 4 | Africa |
| 4570 | Ts'ixa | Khoe | Kalahari | 180 | Endangered | 5 | Africa |
| 2131 | Tsafiki | Barbacoan | Southern Barbacoan | 1872 | Threatened | 4 | South America |
| 3034 | Tsakhur | Northeast Caucasian | Daghestanian | 19000 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 3499 | Tsakonian | Indo-European | Greek | 3000 | Severely Endangered | 6 | Europe |
| 1992 | Tsat | Austronesian | Malayo-Polynesian | 4000 | Threatened | 4 | East Asia |
| 1526 | Tse'khene (Sekani) | Athabaskan-Eyak-Tlingit | Athabaskan | 59 | Critically Endangered | 7 | North America |
| 2211 | Tsez | Northeast Caucasian | Daghestanian | 7500 | Threatened | 4 | Caucasus; Europe; East Asia |
| 781 | Tshwa | Khoe | Kalahari | 4100 | Threatened | 4 | Africa |
| 1687 | Tsilhqot'in (Chilcotin) | Athabaskan-Eyak-Tlingit | Dene (Athabaskan) | 765 | Severely Endangered | 6 | North America |
| 3497 | Tsou | Austronesian | Tsouic | 1000 | Endangered | 5 | East Asia |
| 3490 | Tsum | Sino-Tibetan | Bodish | 4790 | Threatened | 4 | South Asia |
| 1529 | Tsuut'ina | Athabaskan-Eyak-Tlingit | Athabaskan | 47 | Critically Endangered | 7 | North America |
| 2580 | Wardaman | Yangmanic | 30 | Severely Endangered | 6 | Australia | |
| 6730 | Wardandi | Pama-Nyungan | Nyungic | Awakening | 8 | Australia | |
| 3322 | Warembori | Lower Mamberamo | 650 | Endangered | 5 | Southeast Asia | |
| 3367 | Wares | Unclassified | Orya–Tor? | 200 | Endangered | 5 | Southeast Asia |
| 1950 | Wari' | Chapacuran | Southern Chapacuran | 2381 | Threatened | 4 | South America |
| 10667 | Waris | Border | Waris | 4400 | Threatened | 4 | Southeast Asia; Pacific |
| 2801 | Waritai | Lakes Plain | 150 | Endangered | 5 | Southeast Asia | |
| 5566 | Warji | Afro-Asiatic | Chadic | 77700 | Vulnerable | 3 | Africa |
| 3906 | Warkay-Bipim | Trans-New Guinea | Marindic | Endangered | 5 | Southeast Asia | |
| 2581 | Warlmanpa | Pama-Nyungan | Ngumpin-Yapa | 36 | Severely Endangered | 6 | Australia |
| 2347 | Yaka | Niger-Congo | Atlantic-Congo | 30000 | Vulnerable | 3 | Africa |
| 3188 | Yakaikeke | Austronesian | Malayo-Polynesian | 100 | Endangered | 5 | Pacific |
| 1380 | Yakha | Sino-Tibetan | Kiranti | 14000 | Endangered | 5 | South Asia |
| 10454 | Yakut | Turkic | Siberian Turkic | 456288 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 6653 | Yalarnnga | Pama-Nyungan | Kalkatungic | 0 | Dormant | 9 | Australia |
| 10682 | Yalë | Isolate | Pacific | 580 | Endangered | 5 | Pacific |
| 10564 | Yambes | Torricelli | Kombian | 860 | Endangered | 5 | Pacific |
| 3180 | Yaméo | Yaguan | 0 | Dormant | 9 | South America | |
| 2945 | Yaminawa | Pano-Tacanan | Mainline | Dormant | 9 | South America | |
| 3178 | Yamna | Austronesian | Malayo-Polynesian | 560 | Endangered | 5 | Southeast Asia |
| 3216 | Yamphu | Sino-Tibetan | Kiranti | 1722 | Threatened | 4 | South Asia |
| 5947 | Ngan'gikurunggurr | Southern Daly | 240 | Endangered | 5 | Australia | |
| 2553 | Ngan'gityemerri | Southern Daly | 150 | Endangered | 5 | Australia | |
| 2893 | Nganasan | Uralic | Samoyedic | 500 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 4859 | Ngandi | Gunwinyguan | East Arnhem | 9 | Critically Endangered | 7 | Australia |
| 6671 | Nganyaywana | Pama-Nyungan | Anewan | 0 | Dormant | 9 | Australia |
| 5246 | Ngardi | Pama-Nyungan | Ngumpin-Yapa | 10 | Severely Endangered | 6 | Australia |
| 6712 | Ngarigu | Pama-Nyungan | Yuin-Kuric | 0 | Dormant | 9 | Australia |
| 1370 | Ngarinyin | Worrorran | Southern Worrorran | 12 | Critically Endangered | 7 | Australia |
| 2557 | Ngarinyman | Pama-Nyungan | Ngumpin-Yapa | 170 | Endangered | 5 | Australia |
| 4877 | Ngarla | Pama-Nyungan | Ngayarta | Critically Endangered | 7 | Australia | |
| 2559 | Ngarluma | Pama-Nyungan | Ngayarta | 20 | Severely Endangered | 6 | Australia |
| 5225 | Ngarnka | Mirndi | 3 | Critically Endangered | 7 | Australia | |
| 6668 | Ngarrindjeri | Pama-Nyungan | Lower Murray | Awakening | 8 | Australia | |
| 4894 | Ngasa | Nilotic | Eastern Nilotic | 250 | Endangered | 5 | Africa |
| 3054 | Ngatik Men's Creole | Pidgin or Creole | English based | 22 | Severely Endangered | 6 | Pacific |
| 10424 | Ngatikese | Austronesian | Malayo-Polynesian | 700 | Vulnerable | 3 | Pacific |
| 4907 | Ngawun | Pama-Nyungan | Mayabic | 1 | Critically Endangered | 7 | Australia |
| 587 | Ngbinda | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 2515 | Ngen | Austronesian | Malayo-Polynesian | 800 | Endangered | 5 | Pacific |
| 5029 | Nggwahyi | Afro-Asiatic | Chadic | 2000 | Threatened | 4 | Africa |
| 4333 | Ngile | Niger-Congo | Talodi | 38000 | Vulnerable | 3 | Africa |
| 3307 | Ngiyambaa | Pama-Nyungan | Wiradhuric | Critically Endangered | 7 | Australia | |
| 10439 | Ngizim | Afro-Asiatic | Chadic | 80000 | Vulnerable | 3 | Africa |
| 4350 | Ngkâlmpw Kanum | Morehead-Upper Maro | 150 | Endangered | 5 | Southeast Asia | |
| 4025 | Nicaragua Creole English | Pidgin or Creole | English based | 267500 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 7112 | Nicaraguan Sign Language | Sign Language | Mexican, Central American, or Caribbean | 3000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 4588 | Niellim | Niger-Congo | Atlantic-Congo | 5160 | Threatened | 4 | Africa |
| 4879 | Nihali | Isolate | South Asian | 1500 | Threatened | 4 | South Asia |
| 10623 | Niksek | Sepik | Sepik Hill | 300 | Endangered | 5 | Pacific |
| 2726 | Nila | Austronesian | Malayo-Polynesian | 1800 | Threatened | 4 | Pacific |
| 4880 | Nimanburru | Nyulnyulan | Western Nyulnyulan | 2 | Critically Endangered | 7 | Australia |
| 4881 | Nimbari | Niger-Congo | Atlantic-Congo | 0 | Dormant | 9 | Africa |
| 10665 | Nimo | Left May | 178 | Endangered | 5 | Pacific | |
| 861 | Ninam | Yanomaman | 560 | Vulnerable | 3 | South America | |
| 2511 | Ninde | Austronesian | Malayo-Polynesian | 1100 | Threatened | 4 | Pacific |
| 4774 | Ningera | Border | Bewani | 213 | Endangered | 5 | Pacific |
| 10690 | Ninggerum | Trans-New Guinea | Ok | 3500 | Threatened | 4 | Southeast Asia; Pacific |
| 10546 | Ningil | Torricelli | Wapei | 500 | Endangered | 5 | Pacific |
| 482 | Ningye | Niger-Congo | Atlantic-Congo | 4000 | Threatened | 4 | Africa |
| 2625 | Ninzo | Niger-Congo | Atlantic-Congo | 2 | Critically Endangered | 7 | Africa |
| 2518 | Niolean | Austronesian | Malayo-Polynesian | 90 | Severely Endangered | 6 | Pacific |
| 2982 | Nipode | Witotoan | 50 | Severely Endangered | 6 | South America | |
| 4898 | Nisenan | Maiduan | 0 | Dormant | 9 | North America | |
| 5592 | Nisga'a | Tsimshian | 331 | Severely Endangered | 6 | North America | |
| 10791 | Nisvai | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Pacific |
| 10795 | Nitita | Austronesian | Malayo-Polynesian | 5 | Critically Endangered | 7 | Pacific |
| 4862 | Niue | Austronesian | Malayo-Polynesian | 7990 | Threatened | 4 | Pacific |
| 127 | Nivaclé | Matacoan | 8800 | Threatened | 4 | South America | |
| 10800 | Nivat | Austronesian | Malayo-Polynesian | 10 | Critically Endangered | 7 | Pacific |
| 4864 | Njalgulgule | Daju | Western Daju | 900 | Endangered | 5 | Africa |
| 10799 | Njav | Austronesian | Malayo-Polynesian | 10 | Critically Endangered | 7 | Pacific |
| 533 | Njerep | Niger-Congo | Atlantic-Congo | 4 | Critically Endangered | 7 | Africa |
| 8591 | Nkari | Niger-Congo | Atlantic-Congo | 10000 | Threatened | 4 | Africa |
| 841 | Nkoroo | Niger-Congo | Ijoid | 5000 | Threatened | 4 | Africa |
| 5672 | Nocte Naga | Sino-Tibetan | Brahmaputran | 35000 | Threatened | 4 | South Asia |
| 2897 | Noghay | Turkic | Kipchak | 70000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 4870 | Nokuku | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Pacific |
| 2970 | Nomatsiguenga | Arawakan | Southern Arawakan | 5531 | Threatened | 4 | South America |
| 2969 | Nonuya | Witotoan | 0 | Dormant | 9 | South America | |
| 1754 | Noon | Niger-Congo | Atlantic-Congo | 37500 | Vulnerable | 3 | Africa |
| 3284 | Norman | Indo-European | Italic | 11100 | Severely Endangered | 6 | Europe |
| 1128 | North Ambrym | Austronesian | Malayo-Polynesian | 5250 | Threatened | 4 | Pacific |
| 10838 | North Mesopotamian Arabic | Afro-Asiatic | Semitic | 140000 | At risk | 2 | Europe |
| 10688 | North Muyu | Trans-New Guinea | Ok | 8000 | Threatened | 4 | Southeast Asia |
| 3282 | North Saami | Uralic | Saami | 16500 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 10532 | Northeastern Alta Mixtec | Otomanguean | Mixtecan | 10220 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2833 | Northern Alta | Austronesian | Malayo-Polynesian | 240 | Endangered | 5 | Southeast Asia |
| 10533 | Northern Alta Mixtec | Otomanguean | Mixtecan | 3970 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3869 | Northern Altai | Turkic | South Siberian | 10000 | Endangered | 5 | Caucasus; Europe; East Asia |
| 10534 | Northern Baja Mixtec | Otomanguean | Mixtecan | 8320 | Threatened | 4 | Mexico, Central America, Caribbean |
| 8126 | Northern Bolivian Quechua | Quechuan | Quechua IIC | 100000 | At risk | 2 | South America |
| 9849 | Northern Chinantec | Otomanguean | Chinantecan | 37900 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 5153 | Northern Emberá | Chocoan | 88799 | Vulnerable | 3 | South America; Mexico, Central America, Caribbean | |
| 3283 | Northern Frisian | Indo-European | Germanic | 8000 | Threatened | 4 | Europe |
| 8550 | Northern Khanty | Uralic | Khanty | 10000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 4484 | Northern Lorung | Sino-Tibetan | Kiranti | 1207 | Threatened | 4 | South Asia |
| 8529 | Northern Mansi | Uralic | Mansi | 3000 | Endangered | 5 | Caucasus; Europe; East Asia |
| 3175 | Northern Muji | Sino-Tibetan | Lolo-Burmese | 9000 | Endangered | 5 | East Asia |
| 9309 | Northern Northeastern Neo-Aramaic | Afro-Asiatic | Semitic | 15000 | Vulnerable | 3 | Europe |
| 1916 | Northern Paiute | Uto-Aztecan | Northern Uto-Aztecan | 700 | Critically Endangered | 7 | North America |
| 4978 | Northern Pame | Otomanguean | Otopamean | 5620 | Threatened | 4 | Mexico, Central America, Caribbean |
| 1531 | Northern Pomo | Pomoan | 0 | Dormant | 9 | North America | |
| 5607 | Northern Pumi | Sino-Tibetan | Qiangic | 32300 | Vulnerable | 3 | East Asia |
| 2405 | Northern Qiang | Sino-Tibetan | Qiangic | Threatened | 4 | East Asia | |
| 5674 | Northern Rengma Naga | Sino-Tibetan | Angami-Pochuri | 6600 | Threatened | 4 | South Asia |
| 1990 | Northern Roglai | Austronesian | Malayo-Polynesian | 25000 | Vulnerable | 3 | Southeast Asia |
| 8553 | Northern Selkup | Uralic | Samoyedic | 600 | Endangered | 5 | Caucasus; Europe; East Asia |
| 1917 | Northern Straits Salish | Salishan | Central Salish | 20 | Critically Endangered | 7 | North America |
| 10845 | Northern Tepehuán | Uto-Aztecan | Southern Uto-Aztecan | 8000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3521 | Northern Totonac | Totonacan | Totonac | 3000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 4225 | Northern Tujia | Sino-Tibetan | Tujia | 65000 | Severely Endangered | 6 | East Asia |
| 1918 | Northern Tutchone | Athabaskan-Eyak-Tlingit | Athabaskan | 200 | Severely Endangered | 6 | North America |
| 10855 | Northern Yauyos Quechua | Quechuan | Quechua I or IIA | 0 | Dormant | 9 | South America |
| 9850 | Northwestern Chinantec | Otomanguean | Chinantecan | 1720 | Threatened | 4 | Mexico, Central America, Caribbean |
| 7357 | Norwegian Sign Language | Sign Language | European | 4000 | Threatened | 4 | Europe |
| 3808 | Notre | Niger-Congo | Atlantic-Congo | 2368 | Vulnerable | 3 | Africa |
| 580 | Noy | Niger-Congo | Atlantic-Congo | 36 | Severely Endangered | 6 | Africa |
| 10900 | Nsong | Bantu | 7080 | Threatened | 4 | Africa | |
| 10919 | Nteng | West Chadic A3 | 2000 | Vulnerable | 3 | ||
| 556 | Nubaca | Niger-Congo | Atlantic-Congo | 800 | Endangered | 5 | Africa |
| 3790 | Nubi | Pidgin or Creole | Arabic based | 25000 | Threatened | 4 | Africa |
| 4446 | Nubri | Sino-Tibetan | Bodish | 2000 | Threatened | 4 | South Asia |
| 2968 | Nukak | Kakua-Nukak | 390 | Endangered | 5 | South America | |
| 10427 | Nukini | Pano-Tacanan | Mainline | Dormant | 9 | South America | |
| 10705 | Nukna | Trans–New Guinea | Finisterre-Huon | 1000 | Vulnerable | 3 | Pacific |
| 6670 | Nukunu | Pama-Nyungan | Thura-Yura | 0 | Dormant | 9 | Australia |
| 4873 | Nukuoro | Austronesian | Malayo-Polynesian | 900 | Endangered | 5 | Pacific |
| 2372 | Numbami | Austronesian | Malayo-Polynesian | 270 | Endangered | 5 | Pacific |
| 10824 | Nume | Austronesian | Malayo-Polynesian | 700 | Endangered | 5 | Pacific |
| 1371 | Numèè | Austronesian | Malayo-Polynesian | 1810 | Threatened | 4 | Pacific |
| 4901 | Nungali | Mirndi | 2 | Critically Endangered | 7 | Australia | |
| 5675 | Nupbikha | Sino-Tibetan | Bodish | 30000 | Vulnerable | 3 | South Asia |
| 4902 | Nusa Laut | Austronesian | Malayo-Polynesian | 10 | Severely Endangered | 6 | Southeast Asia |
| 1717 | Nuuchahnulth (Nootka) | Wakashan | Southern Wakashan | 108 | Critically Endangered | 7 | North America |
| 1676 | Nuxalk | Salishan | 11 | Critically Endangered | 7 | North America | |
| 8369 | Nyagrong Minyag | Sino-Tibetan | Qiangic | 1000 | Threatened | 4 | East Asia |
| 1235 | Nyahkur | Austro-Asiatic | Monic | 10000 | Endangered | 5 | Southeast Asia |
| 2560 | Nyamal | Pama-Nyungan | Ngayarta | 10 | Critically Endangered | 7 | Australia |
| 5056 | Nyamusa-Molo | Central Sudanic | Bongo-Bagirmi | 1200 | Threatened | 4 | Africa |
| 5805 | Nyang'i | Kuliak | 10 | Critically Endangered | 7 | Africa | |
| 2561 | Nyangumarta | Pama-Nyungan | Marrngu | 520 | Endangered | 5 | Australia |
| 534 | Nyanjang | Niger-Congo | Atlantic-Congo | 4 | Critically Endangered | 7 | Africa |
| 4910 | Nyawaygi | Pama-Nyungan | Dyirbalic | 3 | Critically Endangered | 7 | Australia |
| 5676 | Nyenkha | Sino-Tibetan | Bodish | 8692 | Vulnerable | 3 | South Asia |
| 4908 | Nyeu | Austro-Asiatic | Katuic | 200 | Endangered | 5 | Southeast Asia |
| 2562 | Nyikina | Nyulnyulan | Eastern Nyulnyulan | 50 | Severely Endangered | 6 | Australia |
| 6793 | Nyiyaparli | Pama-Nyungan | Wati | 50 | Severely Endangered | 6 | Australia |
| 4911 | Nyulnyul | Nyulnyulan | Western Nyulnyulan | 1 | Critically Endangered | 7 | Australia |
| 592 | N||ng | Tuu | Kwi | 5 | Critically Endangered | 7 | Africa |
| 1364 | Nłeʔkepmxcín (Thompson) | Salishan | Interior Salish | 133 | Severely Endangered | 6 | North America |
| 4967 | O'ob | Uto-Aztecan | Southern Uto-Aztecan | Endangered | 5 | Mexico, Central America, Caribbean | |
| 1919 | Okanagan-Colville | Salishan | Interior Salish | 375 | Critically Endangered | 7 | North America |
| 3794 | Okiek | Nilotic | Southern Nilotic | 50 | Severely Endangered | 6 | Africa |
| 8590 | Okobo | Niger-Congo | Atlantic-Congo | 50000 | Vulnerable | 3 | Africa |
| 7933 | Okodia | Niger-Congo | Ijoid | 3600 | Threatened | 4 | Africa |
| 10678 | Oksapmin | Trans-New Guinea | 8000 | Vulnerable | 3 | Pacific | |
| 8558 | Old Bargut | Mongolic | Common Mongolic | Threatened | 4 | East Asia | |
| 4919 | Olekha | Sino-Tibetan | Tibeto-Burman | 3 | Critically Endangered | 7 | South Asia |
| 6794 | Olkol | Pama-Nyungan | Paman | 5 | Critically Endangered | 7 | Australia |
| 10540 | Olo | Torricelli | Wapei | 13000 | Vulnerable | 3 | Pacific |
| 10767 | Olrat | Austronesian | Malayo-Polynesian | 3 | Critically Endangered | 7 | Pacific |
| 4977 | Oluta Popoluca | Mixe-Zoquean | Mixean | 12 | Severely Endangered | 6 | Mexico, Central America, Caribbean |
| 862 | Omagua | Tupian | Tupi-Guaranian | 10 | Critically Endangered | 7 | South America |
| 7006 | Original Costa Rican Sign Language | Sign Language | Mexican, Central American, or Caribbean | Critically Endangered | 7 | Mexico, Central America, Caribbean | |
| 6994 | Original Laos Sign Language | Sign Language | Southeast Asian | Southeast Asia | |||
| 10801 | Orkon | Austronesian | Malayo-Polynesian | 30 | Severely Endangered | 6 | Pacific |
| 2741 | Ormu | Austronesian | Malayo-Polynesian | 600 | Endangered | 5 | Southeast Asia |
| 4930 | Ormuri | Indo-European | Indo-Iranian | 3000 | Threatened | 4 | South Asia; Near East |
| 3038 | Oroch | Tungusic | Southern Tungusic | 150 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 3001 | Oroha | Austronesian | Malayo-Polynesian | 38 | Severely Endangered | 6 | Pacific |
| 3043 | Orok | Tungusic | Southern Tungusic | 60 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 1187 | Oroqen | Tungusic | Northern Tungusic | 2500 | Severely Endangered | 6 | East Asia |
| 5866 | Oroshor | Indo-European | Indo-Iranian | 1950 | Vulnerable | 3 | Near East |
| 1741 | Orowari | Chapacuran | Southern Chapacuran | 5 | Critically Endangered | 7 | South America |
| 7932 | Oruma | Niger-Congo | Ijoid | 5000 | Threatened | 4 | Africa |
| 4931 | Osage | Siouan | Mississippi Valley Siouan | Awakening | 8 | North America | |
| 4937 | Otoro | Niger-Congo | Heiban | 10000 | Endangered | 5 | Africa |
| 4938 | Ottawa | Algic | Algonquian | 2000 | Severely Endangered | 6 | North America |
| 285 | Ouargli | Afro-Asiatic | Berber | 5000 | Threatened | 4 | Africa |
| 3545 | Oued-Righ Berber | Afro-Asiatic | Berber | 6000 | Threatened | 4 | Africa |
| 4940 | Ouma | Austronesian | Malayo-Polynesian | 4 | Critically Endangered | 7 | Pacific |
| 10663 | Owiniga | Left May | 219 | Endangered | 5 | Pacific | |
| 1420 | Oyda | Afro-Asiatic | Omotic | 15000 | Vulnerable | 3 | Africa |
| 4955 | Pa Di | Tai-Kadai | Kam-Tai | Threatened | 4 | Southeast Asia; East Asia | |
| 10445 | Pa'a | Afro-Asiatic | Chadic | 8000 | Threatened | 4 | Africa |
| 4960 | Pááfang | Austronesian | Malayo-Polynesian | 1320 | Threatened | 4 | Pacific |
| 2564 | Paakantyi | Pama-Nyungan | Baagandji | 2 | Critically Endangered | 7 | Australia |
| 5316 | Pacaraos Quechua | Quechuan | Quechua I or IIA | 35 | Severely Endangered | 6 | South America |
| 5677 | Padam | Sino-Tibetan | Tani | 40000 | Vulnerable | 3 | South Asia |
| 2962 | Palikur | Arawakan | Northern Arawakan | 2000 | Threatened | 4 | South America |
| 7711 | Paloor | Niger-Congo | Atlantic-Congo | 7500 | Threatened | 4 | Africa |
| 2746 | Palu'e | Austronesian | Malayo-Polynesian | 10000 | Threatened | 4 | Southeast Asia |
| 10890 | Paluai | Austronesian | Oceanic | 2500 | Vulnerable | 3 | |
| 4748 | Palyku | Pama-Nyungan | Ngayarta | Critically Endangered | 7 | Australia | |
| 802 | Pam | Niger-Congo | Atlantic-Congo | 30 | Severely Endangered | 6 | Africa |
| 4825 | Pana (Burkina Faso) | Niger-Congo | Atlantic-Congo | 7800 | Threatened | 4 | Africa |
| 4985 | Pana (Central African Republic) | Niger-Congo | Atlantic-Congo | 85980 | Vulnerable | 3 | Africa |
| 7114 | Panamanian Sign Language | Sign Language | Mexican, Central American, or Caribbean | Threatened | 4 | Mexico, Central America, Caribbean | |
| 4944 | Panamint | Uto-Aztecan | Northern Uto-Aztecan | 20 | Critically Endangered | 7 | North America |
| 2960 | Panare | Cariban | Venezuelan | 3100 | Vulnerable | 3 | South America |
| 2751 | Panasuan | Austronesian | Malayo-Polynesian | 800 | Endangered | 5 | Southeast Asia |
| 6037 | Pande | Niger-Congo | Atlantic-Congo | 8870 | Threatened | 4 | Africa |
| 4961 | Pangwali | Indo-European | Indo-Iranian | 17000 | Threatened | 4 | South Asia |
| 5679 | Pani Koch | Sino-Tibetan | Brahmaputran | 300 | Endangered | 5 | South Asia |
| 4971 | Pankhu | Sino-Tibetan | Kukish | Vulnerable | 3 | South Asia | |
| 2565 | Panyjima | Pama-Nyungan | Ngayarta | 50 | Severely Endangered | 6 | Australia |
| 3117 | Papabuco | Otomanguean | Zapotecan | 5070 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3520 | Papantla Totonac | Totonacan | Totonac | 80000 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1758 | Papapana | Austronesian | Malayo-Polynesian | 120 | Severely Endangered | 6 | Pacific |
| 2645 | Papi | Unclassified | Leonhard Schultze? | 70 | Severely Endangered | 6 | Pacific |
| 1372 | Papitalai | Austronesian | Malayo-Polynesian | 520 | Endangered | 5 | Pacific |
| 5745 | Papuma | Austronesian | Malayo-Polynesian | 600 | Endangered | 5 | Southeast Asia |
| 5289 | Parachi | Indo-European | Indo-Iranian | 6900 | Threatened | 4 | Near East |
| 2959 | Parakanã | Tupian | Tupi-Guaranian | 1286 | Threatened | 4 | South America |
| 1573 | Paraujano | Arawakan | Northern Arawakan | 1 | Critically Endangered | 7 | South America |
| 1065 | Paresí | Arawakan | Southern Arawakan | 2000 | Threatened | 4 | South America |
| 4943 | Parya | Indo-European | Indo-Iranian | 7500 | Threatened | 4 | Near East |
| 10594 | Pasi | Sepik, Tama | 154 | Endangered | 5 | Pacific | |
| 5664 | Pattani | Sino-Tibetan | Tibeto-Kanauri | 11000 | Vulnerable | 3 | South Asia |
| 4744 | Patuá | Pidgin or Creole | Portuguese based | 50 | Critically Endangered | 7 | East Asia |
| 1537 | Patwin | Wintuan | 1 | Critically Endangered | 7 | North America | |
| 2754 | Paulohi | Austronesian | Malayo-Polynesian | 50 | Severely Endangered | 6 | Southeast Asia |
| 2926 | Paumarí | Arawan | 200 | Endangered | 5 | South America | |
| 2051 | Paunaka | Arawakan | Southern Arawakan | Critically Endangered | 7 | South America | |
| 2957 | Pauserna | Tupian | Tupi-Guaranian | 4 | Critically Endangered | 7 | South America |
| 10740 | Pawaia | Isolate | Pacific | 4000 | Threatened | 4 | Pacific |
| 1536 | Pawnee | Caddoan | 10 | Critically Endangered | 7 | North America | |
| 4003 | Payungu | Pama-Nyungan | Kanyara | 6 | Critically Endangered | 7 | Australia |
| 9629 | Pazeh-Kaxabu | Austronesian | Northwest Formosan | 12 | Critically Endangered | 7 | East Asia |
| 1224 | Pear | Austro-Asiatic | Pearic | Severely Endangered | 6 | Southeast Asia | |
| 4946 | Pech | Chibchan | 600 | Endangered | 5 | Mexico, Central America, Caribbean | |
| 5149 | Pei | Unclassified | Leonhard Schultze? | 80 | Severely Endangered | 6 | Pacific |
| 4001 | Pela | Sino-Tibetan | Lolo-Burmese | 600 | Vulnerable | 3 | Southeast Asia; East Asia |
| 10807 | Pele-Ata | Isolate | Pacific | 2000 | Threatened | 4 | Pacific |
| 1710 | Pemón | Cariban | Venezuelan | 24033 | Vulnerable | 3 | South America |
| 7189 | Penang Sign Language | Sign Language | Southeast Asian | 1000 | Endangered | 5 | Southeast Asia |
| 8741 | Penange | Niger-Congo | Dogon | Africa | |||
| 2769 | Pendau | Austronesian | Malayo-Polynesian | 3200 | Threatened | 4 | Southeast Asia |
| 8429 | Pennsylvania German | Indo-European | Germanic | 98700 | Vulnerable | 3 | North America |
| 2994 | Penrhyn | Austronesian | Malayo-Polynesian | 500 | Severely Endangered | 6 | Pacific |
| 7115 | Peruvian Sign Language | Sign Language | South American | Threatened | 4 | South America | |
| 3127 | Petapa Zapotec | Otomanguean | Zapotecan | 8000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2762 | Petjo | Pidgin or Creole | Dutch based | Critically Endangered | 7 | Southeast Asia | |
| 1422 | Phake | Tai-Kadai | Kam-Tai | 2000 | Threatened | 4 | South Asia |
| 5938 | Phalok | Austro-Asiatic | Palaungic | Dormant | 9 | Southeast Asia | |
| 4965 | Phalura | Indo-European | Indo-Iranian | 9841 | Vulnerable | 3 | South Asia |
| 4966 | Phana' | Sino-Tibetan | Lolo-Burmese | Endangered | 5 | Southeast Asia; East Asia | |
| 5680 | Phom Naga | Sino-Tibetan | Brahmaputran | 19000 | Vulnerable | 3 | South Asia |
| 5878 | Phong | Austro-Asiatic | Vietic | Endangered | 5 | Southeast Asia | |
| 5877 | Phong-Kniang | Austro-Asiatic | Khmuic | 1000 | Threatened | 4 | Southeast Asia |
| 5882 | Phonsung | Austro-Asiatic | Vietic | 250 | Endangered | 5 | Southeast Asia |
| 4964 | Phula | Sino-Tibetan | Lolo-Burmese | 10000 | Vulnerable | 3 | Southeast Asia; East Asia |
| 5188 | Phunoi | Sino-Tibetan | Lolo-Burmese | 23618 | Vulnerable | 3 | Southeast Asia |
| 5295 | Piamatsina | Austronesian | Malayo-Polynesian | 250 | Endangered | 5 | Pacific |
| 4968 | Piame | Sepik | Sepik Hill | 100 | Severely Endangered | 6 | Pacific |
| 2955 | Piapoco | Arawakan | Northern Arawakan | 6041 | Threatened | 4 | South America |
| 2954 | Piaroa | Saliban | 13773 | Vulnerable | 3 | South America | |
| 3276 | Picard | Indo-European | Italic | 200000 | Vulnerable | 3 | Europe |
| 6509 | Picuris | Kiowa-Tanoan | Tanoan | 225 | Threatened | 4 | North America |
| 3273 | Piemontese | Indo-European | Italic | 2000000 | Vulnerable | 3 | Europe |
| 2529 | Pije | Austronesian | Malayo-Polynesian | 160 | Endangered | 5 | Pacific |
| 2953 | Pilagá | Guaicuruan | 6000 | Threatened | 4 | South America | |
| 5072 | Pimbwe | Niger-Congo | Atlantic-Congo | 29000 | Vulnerable | 3 | Africa |
| 10684 | Pinai-Hagahai | Piawi | 600 | Vulnerable | 3 | Pacific | |
| 2031 | Pingelapese | Austronesian | Malayo-Polynesian | 3000 | Threatened | 4 | Pacific |
| 2566 | Pini | Pama-Nyungan | Wati | 10 | Severely Endangered | 6 | Australia |
| 4984 | Pinikura | Pama-Nyungan | Kanyara | 0 | Dormant | 9 | Australia |
| 6721 | Pinjarup | Pama-Nyungan | Nyungic | Awakening | 8 | Australia | |
| 4614 | Pinji | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 2567 | Pintiini | Pama-Nyungan | Wati | 250 | Endangered | 5 | Australia |
| 2568 | Pintupi-Luritja | Pama-Nyungan | Wati | 2080 | Threatened | 4 | Australia |
| 481 | Pipil | Uto-Aztecan | Southern Uto-Aztecan | 97 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 2952 | Pirahã | Isolate | 389 | Vulnerable | 3 | South America | |
| 2951 | Piratapuyo | Tucanoan | Eastern Tucanoan | 1330 | Threatened | 4 | South America |
| 6650 | Pirlatapa | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 1636 | Piro | Arawakan | Southern Arawakan | 3490 | Threatened | 4 | South America |
| 6796 | Pirriya | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 2773 | Piru | Austronesian | Malayo-Polynesian | 10 | Severely Endangered | 6 | Southeast Asia |
| 6189 | Pisaflores Tepehua | Totonacan | Tepehua | 4000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2569 | Pitcairn-Norfolk | Pidgin or Creole | English based | 630 | Endangered | 5 | Australia; Pacific |
| 2060 | Pite Saami | Uralic | Saami | 42 | Critically Endangered | 7 | Europe |
| 5030 | Piti | Niger-Congo | Atlantic-Congo | 5530 | Threatened | 4 | Africa |
| 2570 | Pitjantjatjara | Pama-Nyungan | Wati | 3000 | Vulnerable | 3 | Australia |
| 4969 | Pitta-Pitta | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 2646 | Piu | Austronesian | Malayo-Polynesian | 100 | Endangered | 5 | Pacific |
| 5293 | Plains Indian Sign Language | Sign Language | North American | Critically Endangered | 7 | North America | |
| 4980 | Plains Miwok | Utian | Miwokan | 0 | Dormant | 9 | North America |
| 4448 | Plapo Krumen | Niger-Congo | Atlantic-Congo | 100 | Severely Endangered | 6 | Africa |
| 2956 | Playero | Guajiboan | 400 | Endangered | 5 | South America | |
| 5663 | Pochuri Naga | Sino-Tibetan | Angami-Pochuri | 13000 | Threatened | 4 | South Asia |
| 3269 | Poitevin | Indo-European | Italic | Critically Endangered | 7 | Europe | |
| 4975 | Polci | Afro-Asiatic | Chadic | 50000 | Vulnerable | 3 | Africa |
| 5874 | Pong | Austro-Asiatic | Vietic | 1500 | Endangered | 5 | Southeast Asia |
| 2206 | Pongu | Niger-Congo | Atlantic-Congo | 20000 | Vulnerable | 3 | Africa |
| 3265 | Pontic | Indo-European | Greek | 150000 | Threatened | 4 | Europe |
| 5287 | Popoloca | Otomanguean | Popolocan | 17964 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4986 | Poqomam | Mayan | K'ichean | 9548 | Threatened | 4 | Mexico, Central America, Caribbean |
| 6197 | Poqomchi' | Mayan | K'ichean | 114423 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3053 | Port Sandwich | Austronesian | Malayo-Polynesian | 1200 | Threatened | 4 | Pacific |
| 7358 | Portuguese Sign Language | Sign Language | European | 8000 | Threatened | 4 | Europe |
| 121 | Potawatomi | Algic | Algonquian | 10 | Critically Endangered | 7 | North America |
| 4198 | Pottangi Ollar Gadaba | Dravidian | Central Dravidian | 15000 | Vulnerable | 3 | South Asia |
| 10591 | Pouye | Sepik | Ram | 817 | Threatened | 4 | Pacific |
| 4714 | Powle-Ma | Isolate | Pacific | 200 | Endangered | 5 | Southeast Asia |
| 2949 | Poyanawa | Pano-Tacanan | Mainline | Dormant | 9 | South America | |
| 5288 | Prai | Austro-Asiatic | Palaungic | 6281 | Threatened | 4 | Southeast Asia |
| 5290 | Prasuni | Indo-European | Indo-Iranian | 8000 | Vulnerable | 3 | Near East |
| 8629 | Provençal | Indo-European | Italic | 200000 | Threatened | 4 | Europe |
| 6999 | Providencia Sign Language | Sign Language | South American | 1500 | Threatened | 4 | South America |
| 2647 | Puare | Sko | 54 | Severely Endangered | 6 | Pacific | |
| 7116 | Puerto Rican Sign Language | Sign Language | Mexican, Central American, or Caribbean | 24000 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 2767 | Puinave | Isolate | South American | 7154 | Threatened | 4 | South America |
| 5681 | Puiron | Sino-Tibetan | Zemeic | South Asia | |||
| 4973 | Pukapuka | Austronesian | Malayo-Polynesian | 2030 | Endangered | 5 | Pacific |
| 5301 | Puluwatese | Austronesian | Malayo-Polynesian | 1360 | Threatened | 4 | Pacific |
| 1125 | Puma | Sino-Tibetan | Kiranti | 4000 | Threatened | 4 | South Asia |
| 2527 | Punan Batu 1 | Austronesian | Malayo-Polynesian | 30 | Severely Endangered | 6 | Southeast Asia |
| 5300 | Punan Merah | Austronesian | Malayo-Polynesian | 140 | Endangered | 5 | Southeast Asia |
| 5298 | Punan Merap | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Southeast Asia |
| 6722 | Punthamara | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 10742 | Purari | Non-Austronesian | Elema | 10000 | Threatened | 4 | Pacific |
| 4007 | Purduna | Pama-Nyungan | Kanyara | 0 | Dormant | 9 | Australia |
| 7569 | Purepecha | Isolate | Mexican, Central American, or Caribbean | 117221 | Threatened | 4 | Mexico, Central America, Caribbean |
| 1613 | Purik | Sino-Tibetan | Bodish | 132000 | At risk | 2 | South Asia |
| 5429 | Puroik | Sino-Tibetan | Kho-Bwa | 7500 | Threatened | 4 | South Asia; East Asia |
| 2766 | Puruborá | Tupian | 2 | Critically Endangered | 7 | South America | |
| 4642 | Putai | Afro-Asiatic | Chadic | 50 | Severely Endangered | 6 | Africa |
| 5451 | Putijarra | Pama-Nyungan | Wati | 4 | Critically Endangered | 7 | Australia |
| 9649 | Puyuma | Austronesian | Puyuma | 1000 | Severely Endangered | 6 | East Asia |
| 2526 | Pwaamei | Austronesian | Malayo-Polynesian | 220 | Endangered | 5 | Pacific |
| 2525 | Pwapwâ | Austronesian | Malayo-Polynesian | 16 | Severely Endangered | 6 | Pacific |
| 4950 | Pyu | Isolate | 100 | Endangered | 5 | Southeast Asia; Pacific | |
| 652 | Q'anjob'al | Mayan | Q'anjob'alan-Chujean | 99211 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 8090 | Q'eqchi' | Mayan | K'ichean | 726723 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 2029 | Qaqet | East New Britain | Baining | 6350 | Threatened | 4 | Pacific |
| 3176 | Qila Muji | Sino-Tibetan | Lolo-Burmese | 1500 | Vulnerable | 3 | East Asia |
| 8199 | Qinghai Bonan | Mongolic | Shirongolic | 4000 | Threatened | 4 | East Asia |
| 5305 | Quapaw | Siouan | Mississippi Valley Siouan | Awakening | 8 | North America | |
| 7113 | Quebec Sign Language | Sign Language | North American | 1048 | Threatened | 4 | North America |
| 1530 | Quechan | Cochimi-Yuman | Yuman | 175 | Critically Endangered | 7 | North America |
| 5318 | Queyu | Sino-Tibetan | Qiangic | 7000 | Threatened | 4 | East Asia |
| 5309 | Quileute | Chimakuan | 0 | Dormant | 9 | North America | |
| 5682 | Rabha | Sino-Tibetan | Brahmaputran | 139365 | At risk | 2 | South Asia |
| 2774 | Rahambuu | Austronesian | Malayo-Polynesian | 5000 | Threatened | 4 | Southeast Asia |
| 5683 | Raji | Sino-Tibetan | Raji-Raute | 472 | Endangered | 5 | South Asia |
| 9549 | Rajong | Austronesian | Malayo-Polynesian | 6000 | Threatened | 4 | Southeast Asia |
| 5338 | Rakahanga-Manihiki | Austronesian | Malayo-Polynesian | 320 | Endangered | 5 | Pacific |
| 4052 | Raljago | Austronesian | Malayo-Polynesian | 1200 | Threatened | 4 | Pacific |
| 5339 | Rama | Chibchan | Votic | 29 | Critically Endangered | 7 | Mexico, Central America, Caribbean |
| 5684 | Ramo | Sino-Tibetan | Tani | 800 | Endangered | 5 | South Asia |
| 5326 | Rao | Lower Sepik-Ramu | Ramu | 4000 | Threatened | 4 | Pacific |
| 5330 | Rapa | Austronesian | Malayo-Polynesian | 50 | Critically Endangered | 7 | Pacific |
| 2520 | Rapa Nui | Austronesian | Malayo-Polynesian | 2000 | Threatened | 4 | South America |
| 5324 | Rasawa | Lakes Plain | 200 | Endangered | 5 | Southeast Asia | |
| 2850 | Ratagnon | Austronesian | Malayo-Polynesian | Critically Endangered | 7 | Southeast Asia | |
| 1464 | Ratahan | Austronesian | Malayo-Polynesian | Endangered | 5 | Southeast Asia | |
| 10309 | Ratsua | Austronesian | Malayo-Polynesian | 200 | Vulnerable | 3 | Pacific |
| 5329 | Raute | Sino-Tibetan | Raji-Raute | 700 | Vulnerable | 3 | South Asia |
| 10585 | Rawo | Sko | 506 | Endangered | 5 | Pacific | |
| 5328 | Razajerdi | Indo-European | Indo-Iranian | Near East | |||
| 10839 | Razihi | Afro-Asiatic | Semitic | 24000 | Vulnerable | 3 | Near East |
| 1509 | Red Gelao | Tai-Kadai | Kadai | 6000 | Critically Endangered | 7 | Southeast Asia; East Asia |
| 1376 | Reel | Nilotic | Western Nilotic | 50000 | Vulnerable | 3 | Africa |
| 10520 | Rema | Morehead-Upper Maro | Severely Endangered | 6 | Pacific | ||
| 2571 | Rembarrnga | Gunwinyguan | Jala | 69 | Severely Endangered | 6 | Australia |
| 9529 | Rembong | Austronesian | Malayo-Polynesian | 5000 | Threatened | 4 | Southeast Asia |
| 3901 | Remo | Austro-Asiatic | Munda | 9000 | Threatened | 4 | South Asia |
| 9789 | Remun | Austronesian | Malayo-Polynesian | 3542 | Vulnerable | 3 | Southeast Asia |
| 5349 | Rennell Island Sign Language | Sign Language | Pacific | 1 | Critically Endangered | 7 | Pacific |
| 10793 | Rerep | Austronesian | Malayo-Polynesian | 380 | Endangered | 5 | Pacific |
| 2825 | Reshe | Niger-Congo | Atlantic-Congo | 44000 | Vulnerable | 3 | Africa |
| 1859 | Resígaro | Arawakan | Northern Arawakan | 1 | Critically Endangered | 7 | South America |
| 10778 | Retlatur | Austronesian | Malayo-Polynesian | 100 | Severely Endangered | 6 | Pacific |
| 2759 | Reyesano | Pano-Tacanan | Takanan | 12 | Critically Endangered | 7 | South America |
| 5335 | Riang (India) | Sino-Tibetan | Brahmaputran | 5900 | Threatened | 4 | South Asia |
| 5336 | Riang (Myanmar) | Austro-Asiatic | Palaungic | 15500 | Vulnerable | 3 | Southeast Asia; East Asia |
| 2757 | Rikbaktsá | Isolate | South American | 1085 | Threatened | 4 | South America |
| 9109 | Rikou | Austronesian | Malayo-Polynesian | 12000 | Vulnerable | 3 | Southeast Asia |
| 8789 | Rincón | Otomanguean | Zapotecan | 5000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 6511 | Rio Grande Keresan | Keresan | 6125 | Endangered | 5 | North America | |
| 1757 | Ririo | Austronesian | Malayo-Polynesian | 79 | Severely Endangered | 6 | Pacific |
| 2572 | Ritharrngu | Pama-Nyungan | Yolngu | 300 | Endangered | 5 | Australia |
| 486 | Rukul | Niger-Congo | Atlantic-Congo | 750 | Endangered | 5 | Africa |
| 5031 | Ruma | Niger-Congo | Atlantic-Congo | 5090 | Threatened | 4 | Africa |
| 5870 | Rushani | Indo-European | Indo-Iranian | Vulnerable | 3 | Near East | |
| 3046 | Rutul | Northeast Caucasian | Daghestanian | 19000 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 5327 | Saam | Sino-Tibetan | Kiranti | 23 | Severely Endangered | 6 | South Asia |
| 2517 | Saaroa | Austronesian | Tsouic | 10 | Critically Endangered | 7 | East Asia |
| 2592 | Saba | Afro-Asiatic | Chadic | 1340 | Threatened | 4 | Africa |
| 2756 | Sabané | Nambikwaran | 3 | Critically Endangered | 7 | South America | |
| 5358 | Sabüm | Austro-Asiatic | Aslian | 0 | Dormant | 9 | Southeast Asia |
| 1215 | Sach | Austro-Asiatic | Vietic | 500 | Endangered | 5 | Southeast Asia |
| 10708 | Sadu | Sino-Tibetan | Tibeto-Burman | 1505 | Endangered | 5 | East Asia |
| 1429 | Saek | Tai-Kadai | Kam-Tai | 10000 | Threatened | 4 | Southeast Asia |
| 4786 | Sagalla | Niger-Congo | Atlantic-Congo | 100000 | At risk | 2 | Africa |
| 3368 | Sahaptin | Sahaptian | 125 | Critically Endangered | 7 | North America | |
| 2516 | Saisiyat | Austronesian | Northwest Formosan | 3000 | Severely Endangered | 6 | East Asia |
| 2093 | Sajalong | Unclassified | Sino-Tibetan? | 4000 | Threatened | 4 | South Asia |
| 5311 | Sakapulteko | Mayan | K'ichean | 3940 | Threatened | 4 | Mexico, Central America, Caribbean |
| 529 | Sake | Niger-Congo | Atlantic-Congo | 8000 | Threatened | 4 | Africa |
| 2896 | Sakhalin Nivkh | Nivkh | 500 | Severely Endangered | 6 | Caucasus; Europe; East Asia | |
| 3067 | Sakizaya | Austronesian | East Formosan | 550 | Endangered | 5 | East Asia |
| 3508 | Terebu | Austronesian | Malayo-Polynesian | 130 | Endangered | 5 | Pacific |
| 4837 | Tha | Niger-Congo | Atlantic-Congo | 1000 | Threatened | 4 | Africa |
| 5702 | Thado Chin | Sino-Tibetan | Kukish | Severely Endangered | 6 | South Asia; Southeast Asia | |
| 1222 | Thai Song | Tai-Kadai | Kam-Tai | 32300 | Vulnerable | 3 | Southeast Asia |
| 5703 | Thakali | Sino-Tibetan | Tamangic | 7113 | Threatened | 4 | South Asia |
| 4077 | Thalanyji | Pama-Nyungan | Kanyara | Critically Endangered | 7 | Australia | |
| 5646 | Thangal Naga | Sino-Tibetan | Zemeic | 23600 | Vulnerable | 3 | South Asia |
| 4838 | Thangmi | Sino-Tibetan | Newaric | 18991 | Threatened | 4 | South Asia |
| 2452 | Thao | Austronesian | Western Plains | 4 | Critically Endangered | 7 | East Asia |
| 4078 | Tharrkari | Pama-Nyungan | Mantharta | 2 | Critically Endangered | 7 | Australia |
| 1214 | Thavung | Austro-Asiatic | Vietic | 450 | Severely Endangered | 6 | Southeast Asia |
| 6798 | Thiin | Pama-Nyungan | Mantharta | 0 | Dormant | 9 | Australia |
| 10804 | Tholp | Austronesian | Malayo-Polynesian | 0 | Dormant | 9 | Pacific |
| 3447 | Thu Lao | Tai-Kadai | Kam-Tai | 200 | Endangered | 5 | Southeast Asia |
| 5101 | Thulung | Sino-Tibetan | Kiranti | 1000 | Severely Endangered | 6 | South Asia |
| 5704 | Tiddim Chin | Sino-Tibetan | Kukish | 100000 | At risk | 2 | South Asia; Southeast Asia |
| 4836 | Tidikelt Tamazight | Afro-Asiatic | Berber | 9000 | Threatened | 4 | Africa |
| 3818 | Tiéfo | Niger-Congo | Atlantic-Congo | 1000 | Endangered | 5 | Africa |
| 10677 | Tifal | Trans-New Guinea | Ok | 2800 | Threatened | 4 | Pacific |
| 9129 | Tii | Austronesian | Malayo-Polynesian | 20000 | Vulnerable | 3 | Southeast Asia |
| 2577 | Wajarri | Pama-Nyungan | Kartu | 50 | Severely Endangered | 6 | Australia |
| 6802 | Wajuk | Pama-Nyungan | Nyungic | 0 | Dormant | 9 | Australia |
| 3342 | Waka-Waka | Pama-Nyungan | Waka-Kabic | 3 | Critically Endangered | 7 | Australia |
| 3355 | Wakaya | Pama-Nyungan | Warluwaric | 10 | Severely Endangered | 6 | Australia |
| 3155 | Wakhi | Indo-European | Indo-Iranian | 37570 | Vulnerable | 3 | South Asia; Near East; East Asia |
| 3339 | Wali | Nubian | 9000 | Threatened | 4 | Africa | |
| 3341 | Walio | Isolate | 200 | Endangered | 5 | Pacific | |
| 2991 | Walloon | Indo-European | Italic | 600000 | Threatened | 4 | Europe |
| 2578 | Walmajarri | Pama-Nyungan | Ngumpin-Yapa | 860 | Endangered | 5 | Australia |
| 10550 | Walman | Torricelli | Wapei | 1740 | Severely Endangered | 6 | Pacific |
| 4918 | Walungge | Sino-Tibetan | Bodish | 1000 | Threatened | 4 | South Asia |
| 10455 | Salar | Turkic | Central Asian Turkic | 95000 | Threatened | 4 | East Asia |
| 2775 | Salas | Austronesian | Malayo-Polynesian | 50 | Severely Endangered | 6 | Southeast Asia |
| 2606 | Saliba | Austronesian | Malayo-Polynesian | 2500 | Threatened | 4 | Pacific |
| 2605 | Sáliva | Saliban | 45 | Critically Endangered | 7 | South America | |
| 2776 | Saluan | Austronesian | Malayo-Polynesian | 74000 | Vulnerable | 3 | Southeast Asia |
| 7256 | Salvadoran Lenca | Lencan | 0 | Dormant | 9 | Mexico, Central America, Caribbean | |
| 7117 | Salvadoran Sign Language | Sign Language | Mexican, Central American, or Caribbean | Vulnerable | 3 | Mexico, Central America, Caribbean | |
| 7253 | Samatao | Sino-Tibetan | Lolo-Burmese | 400 | Critically Endangered | 7 | East Asia |
| 5173 | Samatu | Sino-Tibetan | Lolo-Burmese | 7500 | Critically Endangered | 7 | East Asia |
| 8949 | Sambe | Niger-Congo | Atlantic-Congo | 2 | Critically Endangered | 7 | Africa |
| 5392 | Samei | Sino-Tibetan | Lolo-Burmese | 18667 | Threatened | 4 | East Asia |
| 2648 | Samosa | Trans-New Guinea | Madang | 90 | Severely Endangered | 6 | Pacific |
| 5687 | Sampang | Sino-Tibetan | Kiranti | 1000 | Severely Endangered | 6 | South Asia |
| 4787 | Sanye | Afro-Asiatic | Cushitic | 17400 | Vulnerable | 3 | Africa |
| 5408 | Saparua | Austronesian | Malayo-Polynesian | 10200 | Vulnerable | 3 | Southeast Asia |
| 2749 | Sapé | Isolate | South America | 0 | Dormant | 9 | South America |
| 2777 | Saponi | Lakes Plain | 4 | Critically Endangered | 7 | Southeast Asia | |
| 5412 | Sara | Austronesian | Malayo-Polynesian | 4000 | Threatened | 4 | Southeast Asia |
| 2748 | Saraveca | Arawakan | Southern Arawakan | 0 | Dormant | 9 | South America |
| 5413 | Sarikoli | Indo-European | Indo-Iranian | 16000 | Vulnerable | 3 | East Asia |
| 5411 | Saruga | Trans-New Guinea | Madang | 130 | Endangered | 5 | Pacific |
| 2593 | Sarwa | Afro-Asiatic | Chadic | 2000 | Threatened | 4 | Africa |
| 10451 | Sasak | Austronesian | Malayo-Polynesian | 2600000 | At risk | 2 | Southeast Asia |
| 5361 | Sassarese Sardinian | Indo-European | Italic | 100000 | At risk | 2 | Europe |
| 5426 | Satawalese | Austronesian | Malayo-Polynesian | 460 | Endangered | 5 | Pacific |
| 3052 | Saterfriesisch | Indo-European | Germanic | 5000 | Threatened | 4 | Europe |
| 1528 | Sauk-Fox | Algic | Algonquian | 200 | Severely Endangered | 6 | North America |
| 6065 | Saulteaux | Algic | Algonquian | 10000 | Threatened | 4 | North America |
| 2778 | Sauri | East Geelvink Bay | 300 | Endangered | 5 | Southeast Asia | |
| 4667 | Sauria Paharia | Dravidian | North Dravidian | 117000 | Vulnerable | 3 | South Asia |
| 2779 | Sause | Isolate | Pacific | 300 | Endangered | 5 | Southeast Asia |
| 5362 | Savi | Indo-European | Indo-Iranian | South Asia; Near East | |||
| 2490 | Savosavo | Isolate | 2500 | Threatened | 4 | Pacific | |
| 9490 | Sawila | Timor-Alor-Pantar | Alor | 3000 | Threatened | 4 | Southeast Asia |
| 294 | Sawknah | Afro-Asiatic | Berber | Dormant | 9 | Africa | |
| 5286 | Sayula Popoluca | Mixe-Zoquean | Mixean | 3025 | Threatened | 4 | Mexico, Central America, Caribbean |
| 10894 | Scots | Indo-European | Germanic | Endangered | 5 | ||
| 3049 | Scottish Gaelic | Indo-European | Celtic | 25000 | Threatened | 4 | Europe |
| 10784 | Se | Austronesian | Malayo-Polynesian | 20 | Severely Endangered | 6 | Pacific |
| 1472 | Secwepemctsin (Shuswap) | Salishan | Interior Salish | 187 | Critically Endangered | 7 | North America |
| 10847 | Sedehi | Indo-European | Northwest Iranian | 200000 | Vulnerable | 3 | Near East |
| 515 | Seediq | Austronesian | Atayalic | Critically Endangered | 7 | East Asia | |
| 5071 | Segeju | Niger-Congo | Atlantic-Congo | 7000 | Threatened | 4 | Africa |
| 5688 | Seke (Nepal) | Sino-Tibetan | Tamangic | 7000 | Threatened | 4 | South Asia |
| 1465 | Seke (Vanuatu) | Austronesian | Malayo-Polynesian | 600 | Threatened | 4 | Pacific |
| 4615 | Seki | Niger-Congo | Atlantic-Congo | 14690 | Vulnerable | 3 | Africa |
| 1309 | Sekpele | Niger-Congo | Atlantic-Congo | 23400 | Vulnerable | 3 | Africa |
| 7190 | Selangor Sign Language | Sign Language | Southeast Asian | 500 | Endangered | 5 | Southeast Asia |
| 6039 | Selee | Niger-Congo | Atlantic-Congo | 6000 | Threatened | 4 | Africa |
| 1257 | Semai | Austro-Asiatic | Aslian | 29000 | Vulnerable | 3 | Southeast Asia |
| 1256 | Semaq Beri | Austro-Asiatic | Aslian | 2488 | Threatened | 4 | Southeast Asia |
| 1255 | Semelai | Austro-Asiatic | Aslian | 4103 | Vulnerable | 3 | Southeast Asia |
| 5395 | Semnani | Indo-European | Indo-Iranian | 60000 | Vulnerable | 3 | Near East |
| 5432 | Senaya | Afro-Asiatic | Semitic | 200 | Endangered | 5 | Near East |
| 2649 | Sene | Trans-New Guinea | Finisterre-Huon | 10 | Severely Endangered | 6 | Pacific |
| 514 | Seneca | Iroquoian | Northern Iroquoian | 50 | Critically Endangered | 7 | North America |
| 2780 | Senggi | Border | Waris | 120 | Endangered | 5 | Southeast Asia |
| 10614 | Sengo | Sepik | Ndu | 300 | Endangered | 5 | Pacific |
| 2650 | Sengseng | Austronesian | Malayo-Polynesian | 1750 | Threatened | 4 | Pacific |
| 4569 | Sengwer | Nilotic | Southern Nilotic | 6000 | Threatened | 4 | Africa |
| 8489 | Senhaja de Srair | Afro-Asiatic | Berber | 50000 | Vulnerable | 3 | Africa |
| 5420 | Sentinel | Unclassified | Vulnerable | 3 | South Asia | ||
| 5404 | Sepa (Indonesia) | Austronesian | Malayo-Polynesian | 2600 | Threatened | 4 | Southeast Asia |
| 2651 | Sepa (Papua New Guinea) | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Pacific |
| 10651 | Sepen | Lower Sepik-Ramu | Ramu | 409 | Endangered | 5 | Pacific |
| 10581 | Sepik Iwam | Sepik | Iwam | 2500 | Threatened | 4 | Pacific |
| 2652 | Sera | Austronesian | Malayo-Polynesian | 432 | Endangered | 5 | Pacific |
| 5846 | Seri | Isolate | Mexican, Central American, or Caribbean | 858 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2781 | Serili | Austronesian | Malayo-Polynesian | 330 | Endangered | 5 | Southeast Asia |
| 1518 | Serrano | Uto-Aztecan | Northern Uto-Aztecan | Awakening | 8 | North America | |
| 5421 | Seta | Torricelli | One | 155 | Endangered | 5 | Pacific |
| 5424 | Setaman | Trans-New Guinea | Ok | 381 | Threatened | 4 | Pacific |
| 5357 | Seti | Torricelli | One | 113 | Endangered | 5 | Pacific |
| 5419 | Settla | Pidgin or Creole | Swahili based | Africa | |||
| 4607 | Sezo | Afro-Asiatic | Omotic | 3000 | Threatened | 4 | Africa |
| 5032 | Sha | Afro-Asiatic | Chadic | 3000 | Threatened | 4 | Africa |
| 1379 | Shabo | Unclassified | Komuz? | 600 | Severely Endangered | 6 | Africa |
| 9250 | Shahmirzadi | Indo-European | Indo-Iranian | Near East | |||
| 4014 | Shanenawa | Pano-Tacanan | Mainline | 23 | Critically Endangered | 7 | South America |
| 5047 | Shanga | Niger-Congo | Mande | 5000 | Threatened | 4 | Africa |
| 5365 | Shatt | Daju | Eastern Daju | 30000 | Vulnerable | 3 | Africa |
| 5409 | Shau | Niger-Congo | Atlantic-Congo | Africa | |||
| 1517 | Shawnee | Algic | Algonquian | 100 | Severely Endangered | 6 | North America |
| 1326 | She | Hmong-Mien | Hmongic | 1000 | Severely Endangered | 6 | East Asia |
| 5932 | Shé | Afro-Asiatic | Omotic | 13116 | Vulnerable | 3 | Africa |
| 1527 | She shashishalhem (Sechelt) | Salishan | Central Salish | 4 | Critically Endangered | 7 | North America |
| 2701 | Sheko | Afro-Asiatic | Omotic | Vulnerable | 3 | Africa | |
| 10893 | Shelta | 27000 | Vulnerable | 3 | Europe | ||
| 4479 | Shen | Niger-Congo | Atlantic-Congo | 1000 | Threatened | 4 | Africa |
| 490 | Sheni | Niger-Congo | Atlantic-Congo | 6 | Critically Endangered | 7 | Africa |
| 5689 | Sherdukpen | Sino-Tibetan | Kho-Bwa | 2000 | Threatened | 4 | South Asia |
| 5690 | Sherpa | Sino-Tibetan | Bodish | 42500 | Threatened | 4 | South Asia; East Asia |
| 5033 | Shiki | Niger-Congo | Atlantic-Congo | 1000 | Endangered | 5 | Africa |
| 2737 | Shikuyana | Cariban | Parukotoan | 162 | Endangered | 5 | South America |
| 5691 | Shimong | Sino-Tibetan | Tani | 2000 | Threatened | 4 | South Asia |
| 2738 | Shipibo | Pano-Tacanan | Mainline | 22517 | Vulnerable | 3 | South America |
| 5048 | Shirawa | Afro-Asiatic | Chadic | Africa | |||
| 852 | Shiwilu | Cahuapanan | 30 | Critically Endangered | 7 | South America | |
| 5431 | Shixing | Sino-Tibetan | Naic | 1000 | Threatened | 4 | East Asia |
| 2061 | Sholaga | Dravidian | South Dravidian | 24000 | Vulnerable | 3 | South Asia |
| 5146 | Shom Peng | Austro-Asiatic | Nicobarese | 350 | Threatened | 4 | South Asia |
| 3048 | Shor | Turkic | South Siberian | 10000 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 1473 | Shoshone | Uto-Aztecan | Northern Uto-Aztecan | 1000 | Endangered | 5 | North America |
| 600 | Shua | Khoe | Kalahari | 4100 | Endangered | 5 | Africa |
| 4329 | Shuar | Chicham family (Jivaroan) | 42840 | Vulnerable | 3 | South America | |
| 5867 | Shughni | Indo-European | Indo-Iranian | 90000 | Vulnerable | 3 | Near East |
| 5425 | Shumashti | Indo-European | Indo-Iranian | Severely Endangered | 6 | Near East | |
| 5368 | Shwai | Niger-Congo | Heiban | 3500 | Threatened | 4 | Africa |
| 2514 | Sian | Austronesian | Malayo-Polynesian | 50 | Severely Endangered | 6 | Southeast Asia |
| 10683 | Siawi | Amto-Musan | 75 | Severely Endangered | 6 | Pacific | |
| 4779 | Sibe | South Bougainville | Nasioi | 5000 | Threatened | 4 | Pacific |
| 5811 | Sichela | Niger-Congo | Atlantic-Congo | 20000 | Vulnerable | 3 | Africa |
| 9874 | Sierra Chinantec | Otomanguean | Chinantecan | 10440 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4056 | Sierra Miwok | Utian | Miwokan | 1 | Critically Endangered | 7 | North America |
| 6169 | Sierra Popoluca | Mixe-Zoquean | Zoquean | 26017 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 3519 | Sierra Totonac | Totonacan | Totonac | 120000 | At risk | 2 | Mexico, Central America, Caribbean |
| 530 | Sighu | Niger-Congo | Atlantic-Congo | Endangered | 5 | Africa | |
| 5192 | Sila | Sino-Tibetan | Lolo-Burmese | 2118 | Threatened | 4 | Southeast Asia |
| 10559 | Siliput | Torricelli | Maimai | 263 | Endangered | 5 | Pacific |
| 3228 | Silopi | Trans-New Guinea | Madang | 180 | Endangered | 5 | Pacific |
| 4616 | Simba | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 1721 | Simba Guaraní | Tupian | Tupi-Guaranian | Threatened | 4 | South America | |
| 5692 | Simte | Sino-Tibetan | Kukish | 7150 | Threatened | 4 | South Asia |
| 1067 | Singpho | Sino-Tibetan | Bodish | 2500 | Threatened | 4 | South Asia |
| 10785 | Sinia | Austronesian | Malayo-Polynesian | 520 | Endangered | 5 | Pacific |
| 3817 | Sininkere | Niger-Congo | Mande | 6000 | Threatened | 4 | Africa |
| 8569 | Sinkiang Dagur | Mongolic | Daguric | Threatened | 4 | Near East; East Asia | |
| 5343 | Sinte Romani | Indo-European | Indo-Iranian | 318920 | At risk | 2 | Europe; Caucasus; East Asia |
| 1752 | Siona-Secoya | Tucanoan | Western Tucanoan | 1174 | Threatened | 4 | South America |
| 6512 | Sioux | Siouan | Mississippi Valley Siouan | 25000 | Endangered | 5 | North America |
| 5310 | Sipakapa | Mayan | K'ichean | 6344 | Threatened | 4 | Mexico, Central America, Caribbean |
| 10746 | Siphuthi | Niger-Congo | Benue-Congo | 20000 | Vulnerable | 3 | Africa |
| 9630 | Siraya | Austronesian | East Formosan | Awakening | 8 | East Asia | |
| 10829 | Sirenikski | Eskimo-Aleut | Eskimo | Dormant | 9 | Caucasus; Europe; East Asia | |
| 5374 | Siri | Afro-Asiatic | Chadic | 3800 | Endangered | 5 | Africa |
| 2734 | Siriano | Tucanoan | Eastern Tucanoan | 820 | Endangered | 5 | South America |
| 2730 | Sirionó | Tupian | Tupi-Guaranian | 100 | Critically Endangered | 7 | South America |
| 5415 | Sirmauri | Indo-European | Indo-Iranian | 400000 | At risk | 2 | South Asia |
| 10329 | Sirva | Trans-New Guinea | Madang | 200 | Endangered | 5 | Pacific |
| 5370 | Sîshëë | Austronesian | Malayo-Polynesian | Awakening | 8 | Pacific | |
| 2685 | Sissano | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 8390 | Siuslaw | Isolate | North America | 0 | Dormant | 9 | North America |
| 5376 | Sivandi | Indo-European | Indo-Iranian | 7030 | Threatened | 4 | Near East |
| 295 | Siwi | Afro-Asiatic | Berber | 10000 | Vulnerable | 3 | Africa |
| 2091 | Ski:xs (Southern Tsimshian) | Tsimshian | 1 | Critically Endangered | 7 | North America | |
| 3047 | Skolt Saami | Uralic | Saami | 300 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 10587 | Skou | Sko | 700 | Threatened | 4 | Southeast Asia | |
| 1450 | Sḵwx̱wú7mesh sníchim (Squamish) | Salishan | Central Salish | 6 | Critically Endangered | 7 | North America |
| 4465 | Smärky Kanum | Morehead-Upper Maro | 80 | Severely Endangered | 6 | Southeast Asia | |
| 3040 | Sm̓algya̱x ( Coast Tsimshian) | Tsimshian | 430 | Critically Endangered | 7 | North America | |
| 9589 | So'a | Austronesian | Malayo-Polynesian | 10000 | Vulnerable | 3 | Southeast Asia |
| 2782 | Sobei | Austronesian | Malayo-Polynesian | 1850 | Endangered | 5 | Southeast Asia |
| 5402 | Soi | Indo-European | Indo-Iranian | 7030 | Threatened | 4 | Near East |
| 4585 | Sokoro | Afro-Asiatic | Chadic | 5000 | Threatened | 4 | Africa |
| 8570 | Solon | Tungusic | Northern Tungusic | 15000 | Threatened | 4 | East Asia |
| 2686 | Som | Trans-New Guinea | Finisterre-Huon | 80 | Severely Endangered | 6 | Pacific |
| 5394 | Somray | Austro-Asiatic | Pearic | 2 | Critically Endangered | 7 | Southeast Asia |
| 536 | Somyev | Niger-Congo | Atlantic-Congo | 20 | Severely Endangered | 6 | Africa |
| 5401 | Sonha | Indo-European | Indo-Iranian | 579 | Endangered | 5 | South Asia |
| 5403 | Sonsorol | Austronesian | Malayo-Polynesian | 600 | Endangered | 5 | Pacific |
| 5081 | Soo | Kuliak | 100 | Severely Endangered | 6 | Africa | |
| 5410 | Soqoṭri | Afro-Asiatic | Semitic | 50000 | Endangered | 5 | Near East |
| 5619 | Sora | Austro-Asiatic | Munda | 225000 | At risk | 2 | South Asia |
| 9249 | Sorkhei | Indo-European | Indo-Iranian | 10000 | Vulnerable | 3 | Near East |
| 2846 | Sorsogon Ayta | Austronesian | Malayo-Polynesian | 18 | Severely Endangered | 6 | Southeast Asia |
| 2513 | Sörsörian | Austronesian | Malayo-Polynesian | 4 | Critically Endangered | 7 | Pacific |
| 4441 | Sota Kanum | Morehead-Upper Maro | 100 | Severely Endangered | 6 | Southeast Asia | |
| 2607 | South Marquesan | Austronesian | Malayo-Polynesian | Threatened | 4 | Pacific | |
| 10689 | South Muyu | Trans-New Guinea | Ok | 4000 | Threatened | 4 | Southeast Asia |
| 5389 | South Saami | Uralic | Saami | 600 | Endangered | 5 | |
| 5354 | South-Central Okinawan | Japonic | Ryukyuan | 95000 | Severely Endangered | 6 | East Asia |
| 7930 | Southeast Ijo | Niger-Congo | Ijoid | 71500 | Vulnerable | 3 | Africa |
| 4861 | Southeastern Kolami | Dravidian | Central Dravidian | 1500 | Threatened | 4 | South Asia |
| 4987 | Southeastern Pomo | Pomoan | Awakening | 8 | North America | ||
| 5465 | Southern Alta | Austronesian | Malayo-Polynesian | 1000 | Endangered | 5 | Southeast Asia |
| 3044 | Southern Altai | Turkic | South Siberian | 20000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 10535 | Southern Baja Mixtec | Otomanguean | Mixtecan | 47500 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 2519 | Southern Cook Islands Maori | Austronesian | Malayo-Polynesian | 33220 | Vulnerable | 3 | Pacific |
| 2597 | Southern Emberá | Chocoan | 88799 | Vulnerable | 3 | South America; Mexico, Central America, Caribbean | |
| 5634 | Southern Ghale | Sino-Tibetan | Tamangic | 1649 | Vulnerable | 3 | South Asia |
| 7590 | Southern Highland Mixe | Mixe-Zoquean | Mixean | 3617 | Threatened | 4 | Mexico, Central America, Caribbean |
| 8551 | Southern Khanty | Uralic | Khanty | Dormant | 9 | Caucasus; Europe; East Asia | |
| 3182 | Southern Muji | Sino-Tibetan | Lolo-Burmese | 26000 | Vulnerable | 3 | East Asia |
| 10374 | Southern Nicobarese | Austro-Asiatic | Nicobarese | 7500 | Threatened | 4 | South Asia |
| 9330 | Southern Northeastern Neo-Aramaic | Afro-Asiatic | Semitic | Threatened | 4 | Europe | |
| 1533 | Southern Pomo | Pomoan | 1 | Critically Endangered | 7 | North America | |
| 5608 | Southern Pumi | Sino-Tibetan | Qiangic | 60000 | Vulnerable | 3 | East Asia |
| 5613 | Southern Qiang | Sino-Tibetan | Qiangic | Threatened | 4 | East Asia | |
| 5686 | Southern Rengma Naga | Sino-Tibetan | Angami-Pochuri | Vulnerable | 3 | South Asia | |
| 1991 | Southern Roglai | Austronesian | Malayo-Polynesian | 20000 | Vulnerable | 3 | Southeast Asia |
| 8555 | Southern Selkup | Uralic | Samoyedic | 1 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 10844 | Southern Tepehuán | Uto-Aztecan | Southern Uto-Aztecan | 28917 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1471 | Southern Tiwa | Kiowa-Tanoan | Tanoan | 1600 | Endangered | 5 | North America |
| 1744 | Southern Tujia | Sino-Tibetan | Tujia | 2000 | Severely Endangered | 6 | East Asia |
| 4534 | Southern Yamphu | Sino-Tibetan | Kiranti | 4000 | Threatened | 4 | South Asia |
| 10854 | Southern Yauyos Quechua | Quechuan | Quechua IIA | 450 | Critically Endangered | 7 | South America |
| 4171 | Southwestern Ojibwa | Algic | Algonquian | 5000 | Threatened | 4 | North America |
| 2510 | Sowa | Austronesian | Malayo-Polynesian | Dormant | 9 | Pacific | |
| 10668 | Sowanda | Border | Waris | 1100 | Threatened | 4 | Southeast Asia; Pacific |
| 10480 | Soyot | Turkic | Siberian Turkic | Awakening | 8 | Caucasus; Europe; East Asia | |
| 5693 | Spiti Bhoti | Sino-Tibetan | Bodish | 10000 | Threatened | 4 | South Asia |
| 3568 | Sri Lanka Malay | Pidgin or Creole | Malay based | Endangered | 5 | South Asia | |
| 7191 | Sri Lankan Sign Language | Sign Language | South Asian | 12800 | Vulnerable | 3 | South Asia |
| 1449 | Stoney | Siouan | Mississippi Valley Siouan | 1250 | Endangered | 5 | North America |
| 1935 | St̓át̓imcets (Lillooet) | Salishan | Interior Salish | 98 | Critically Endangered | 7 | North America |
| 10029 | Suabo | Trans-New Guinea | South Bird's Head | 800 | Critically Endangered | 7 | Southeast Asia |
| 4789 | Suba | Niger-Congo | Atlantic-Congo | 174000 | At risk | 2 | Africa |
| 3544 | Subiya | Niger-Congo | Atlantic-Congo | 24500 | Vulnerable | 3 | Africa |
| 5427 | Suena | Trans-New Guinea | Binanderean | 3000 | Threatened | 4 | Pacific |
| 10676 | Suganga | Trans-New Guinea | Ok | 680 | Endangered | 5 | Pacific |
| 856 | Sukur | Afro-Asiatic | Chadic | 15000 | Vulnerable | 3 | Africa |
| 10810 | Sulka | Isolate | Pacific | 2500 | Threatened | 4 | Pacific |
| 2688 | Sumariup | Sepik | Sepik Hill | 80 | Severely Endangered | 6 | Pacific |
| 1860 | Sumi Naga | Sino-Tibetan | Angami-Pochuri | 100000 | At risk | 2 | South Asia |
| 6199 | Sumo | Misumalpan | 10000 | Threatened | 4 | Mexico, Central America, Caribbean | |
| 5694 | Sunwar | Sino-Tibetan | Kiranti | 26611 | Threatened | 4 | South Asia |
| 1220 | Suoy | Austro-Asiatic | Pearic | 500 | Endangered | 5 | Southeast Asia |
| 488 | Sur | Niger-Congo | Atlantic-Congo | 4000 | Vulnerable | 3 | Africa |
| 5695 | Surel | Sino-Tibetan | Kiranti | Endangered | 5 | South Asia | |
| 5057 | Suri | Surmic | Southeast Surmic | 28000 | Vulnerable | 3 | Africa |
| 5034 | Surubu | Niger-Congo | Atlantic-Congo | 7170 | Threatened | 4 | Africa |
| 2727 | Suruí do Pará | Tupian | Tupi-Guaranian | 264 | Endangered | 5 | South America |
| 2689 | Susuami | Trans-New Guinea | Angan | 10 | Severely Endangered | 6 | Pacific |
| 2725 | Suyá | Jean | Northern Je | 409 | Endangered | 5 | South America |
| 3042 | Svan | South Caucasian | 30000 | Vulnerable | 3 | Caucasus | |
| 7359 | Swedish Sign Language | Sign Language | European | Threatened | 4 | Europe | |
| 7360 | Swiss-French Sign Language | Sign Language | European | 1700 | Endangered | 5 | Europe |
| 7361 | Swiss-German Sign Language | Sign Language | European | 5500 | Endangered | 5 | Europe |
| 7362 | Swiss-Italian Sign Language | Sign Language | European | 300 | Endangered | 5 | Europe |
| 6045 | Swoeng | Austro-Asiatic | Bahnaric | 492 | Endangered | 5 | Southeast Asia |
| 1430 | T'en | Tai-Kadai | Kam-Tai | 20000 | Threatened | 4 | East Asia |
| 593 | Taa | Tuu | Hua | 2600 | Threatened | 4 | Africa |
| 1515 | Taba | Austronesian | Malayo-Polynesian | 35000 | Endangered | 5 | Southeast Asia |
| 3051 | Tabasaran | Northeast Caucasian | Daghestanian | 93630 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 6674 | Tabo | Isolate | Pacific | 3000 | Threatened | 4 | Pacific |
| 2724 | Tacana | Pano-Tacanan | Takana | 1153 | Threatened | 4 | South America |
| 5711 | Tagalaka | Pama-Nyungan | Paman | 1 | Critically Endangered | 7 | Australia |
| 5812 | Tagdal | Mixed Language | Songhay-Tuareg | 15000 | Vulnerable | 3 | Africa |
| 5696 | Tagin | Sino-Tibetan | Tani | 25000 | Vulnerable | 3 | South Asia |
| 1448 | Tagish | Athabaskan-Eyak-Tlingit | Athabaskan | 1 | Critically Endangered | 7 | North America |
| 1136 | Tagoi | Niger-Congo | Rashad | 13000 | Vulnerable | 3 | Africa |
| 290 | Tahaggart Tamahaq | Afro-Asiatic | Berber | 62000 | Vulnerable | 3 | Africa |
| 1428 | Tai Daeng | Tai-Kadai | Kam-Tai | 80000 | Threatened | 4 | Southeast Asia |
| 1245 | Tai Loi | Austro-Asiatic | Palaungic | 4460 | Vulnerable | 3 | Southeast Asia |
| 1427 | Tai Neua | Tai-Kadai | Kam-Tai | 70000 | Threatened | 4 | Southeast Asia |
| 2216 | Taiap | Isolate | Pacific | 75 | Severely Endangered | 6 | Pacific |
| 2783 | Taikat | Border | Taikat | 600 | Endangered | 5 | Southeast Asia |
| 2805 | Taiwano | Tucanoan | Eastern Tucanoan | 22 | Severely Endangered | 6 | South America |
| 2784 | Taje | Austronesian | Malayo-Polynesian | 6 | Critically Endangered | 7 | Southeast Asia |
| 3585 | Tajiki Spoken Arabic | Afro-Asiatic | Semitic | 6000 | Threatened | 4 | Near East |
| 2786 | Tajio | Austronesian | Malayo-Polynesian | 12000 | Threatened | 4 | Southeast Asia |
| 3541 | Takestani | Indo-European | Indo-Iranian | 220000 | At risk | 2 | Near East |
| 5626 | Takpa | Sino-Tibetan | Bodish | Threatened | 4 | South Asia; East Asia | |
| 1021 | Tala | Afro-Asiatic | Chadic | 1000 | Threatened | 4 | Africa |
| 8069 | Talinga-Bwisi | Niger-Congo | Atlantic-Congo | 80000 | Vulnerable | 3 | Africa |
| 3537 | Talodi | Niger-Congo | Talodi | 1500 | Threatened | 4 | Africa |
| 2787 | Taloki | Austronesian | Malayo-Polynesian | 500 | Endangered | 5 | Southeast Asia |
| 2788 | Talondo' | Austronesian | Malayo-Polynesian | 400 | Endangered | 5 | Southeast Asia |
| 5172 | Talu | Sino-Tibetan | Lolo-Burmese | 10138 | Vulnerable | 3 | East Asia |
| 5697 | Talysh | Indo-European | Indo-Iranian | 912000 | At risk | 2 | Caucasus; Near East |
| 4676 | Tamambo | Austronesian | Malayo-Polynesian | 3500 | Vulnerable | 3 | Pacific |
| 2594 | Tamki | Afro-Asiatic | Chadic | 500 | Endangered | 5 | Africa |
| 1446 | Tanacross | Athabaskan-Eyak-Tlingit | Dene (Athabaskan) | 50 | Critically Endangered | 7 | North America |
| 10732 | Tanahmerah | Isolate | Pacific | 500 | Endangered | 5 | Southeast Asia |
| 2455 | Tanapag | Austronesian | Malayo-Polynesian | 4400 | Threatened | 4 | Pacific |
| 2789 | Tandia | Austronesian | Malayo-Polynesian | 2 | Critically Endangered | 7 | Southeast Asia |
| 3523 | Tanema | Austronesian | Malayo-Polynesian | 4 | Critically Endangered | 7 | Pacific |
| 7170 | Tangam | Sino-Tibetan | Tani | 200 | Severely Endangered | 6 | South Asia |
| 7374 | Tangkhul Naga | Sino-Tibetan | Tangkhul | 58167 | Endangered | 5 | South Asia |
| 3539 | Tangko | Trans-New Guinea | Ok | Endangered | 5 | Southeast Asia | |
| 5175 | Tanglang | Sino-Tibetan | Lolo-Burmese | 947 | Threatened | 4 | East Asia |
| 10788 | Tangoa | Austronesian | Malayo-Polynesian | 370 | Endangered | 5 | Pacific |
| 10653 | Tangu | Lower Sepik-Ramu | Ramu | 2330 | Threatened | 4 | Pacific |
| 10655 | Tanguat | Lower Sepik-Ramu | Ramu | 510 | Endangered | 5 | Pacific |
| 3003 | Tanimbili | Austronesian | Malayo-Polynesian | 50 | Severely Endangered | 6 | Pacific |
| 5155 | Tanimuca-Retuarã | Tucanoan | Western Tucanoan | 1952 | Threatened | 4 | South America |
| 10747 | Tao | Austronesian | Malayo-Polynesian | 3000 | Severely Endangered | 6 | East Asia |
| 6510 | Taos | Kiowa-Tanoan | Tanoan | 800 | Endangered | 5 | North America |
| 4712 | Tape | Austronesian | Malayo-Polynesian | 12 | Critically Endangered | 7 | Pacific |
| 2693 | Tenis | Austronesian | Malayo-Polynesian | 30 | Severely Endangered | 6 | Pacific |
| 5060 | Tennet | Surmic | Southwest Surmic | 7000 | Threatened | 4 | Africa |
| 2489 | Teop | Austronesian | Malayo-Polynesian | 5000 | Threatened | 4 | Pacific |
| 3665 | Tequiraca | Isolate | South American | 0 | Dormant | 9 | South America |
| 3566 | Ter Saami | Uralic | Saami | 30 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 2148 | Tikuna | Tikuna-Yurí | 50102 | Vulnerable | 3 | South America | |
| 4936 | Tilapa Otomí | Otomanguean | Otopamean | 400 | Endangered | 5 | Mexico, Central America, Caribbean |
| 4834 | Tilung | Sino-Tibetan | Kiranti | 7 | Critically Endangered | 7 | South Asia |
| 1439 | Tima | Niger-Congo | Katla-Tima | 5000 | Threatened | 4 | Africa |
| 4483 | Tinani | Sino-Tibetan | Tibeto-Kanauri | Threatened | 4 | South Asia; East Asia | |
| 3039 | Tindi | Northeast Caucasian | Daghestanian | 5000 | Threatened | 4 | Caucasus; Europe; East Asia |
| 2146 | Tinigua | Tiniguan | 1 | Critically Endangered | 7 | South America | |
| 2153 | Tipai | Cochimi-Yuman | Yuman | 100 | Severely Endangered | 6 | North America; Mexico, Central America, Caribbean |
| 3509 | Tirahi | Indo-European | Indo-Iranian | 0 | Dormant | 9 | Near East |
| 8738 | Tiranige Diga | Niger-Congo | Dogon | 4200 | Threatened | 4 | Africa |
| 10817 | Tirax | Austronesian | Malayo-Polynesian | 1000 | Endangered | 5 | Pacific |
| 4480 | Tiwa | Sino-Tibetan | Brahmaputran | 27072 | Vulnerable | 3 | South Asia |
| 2574 | Tiwi | Isolate | 1500 | Threatened | 4 | Australia | |
| 5560 | Tjungundji | Pama-Nyungan | Paman | 10 | Severely Endangered | 6 | Australia |
| 7069 | Tjupany | Pama-Nyungan | Wati | 10 | Severely Endangered | 6 | Australia |
| 3514 | Tlachichilco Tepehua | Totonacan | Tepehua | 3000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 9070 | Tlacolula | Otomanguean | Zapotecan | Mexico, Central America, Caribbean | |||
| 3125 | Tlacolulita Zapotec | Otomanguean | Zapotecan | 140 | Endangered | 5 | Mexico, Central America, Caribbean |
| 3513 | Tlapanec | Otomanguean | Tlapanec-Subtiaba | 120072 | At risk | 2 | Mexico, Central America, Caribbean |
| 850 | Tlingit | Athabaskan-Eyak-Tlingit | Tlingit | 200 | Critically Endangered | 7 | North America |
| 3517 | To | Niger-Congo | Atlantic-Congo | 0 | Dormant | 9 | Africa |
| 2143 | Toba | Guaicuruan | 31593 | Vulnerable | 3 | South America | |
| 2794 | Tobati | Austronesian | Malayo-Polynesian | 100 | Severely Endangered | 6 | Southeast Asia |
| 2451 | Tobian | Austronesian | Malayo-Polynesian | 22 | Severely Endangered | 6 | Pacific |
| 5115 | Tocho | Niger-Congo | Talodi | 3800 | Threatened | 4 | Africa |
| 5103 | Toda | Dravidian | South Dravidian | 1000 | Endangered | 5 | South Asia |
| 2365 | Tofa | Turkic | South Siberian | 40 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 2795 | Tofanma | Namla-Tofanma | 251 | Vulnerable | 3 | Southeast Asia | |
| 842 | Tojolabal | Mayan | Q'anjob'alan-Chujean | Threatened | 4 | Mexico, Central America, Caribbean | |
| 3543 | Tokelauan | Austronesian | Malayo-Polynesian | 8000 | Threatened | 4 | Pacific |
| 5334 | Toksiki | Austronesian | Malayo-Polynesian | 75 | Severely Endangered | 6 | Pacific |
| 2055 | Tol | Jicaquean | 250 | Endangered | 5 | Mexico, Central America, Caribbean | |
| 2450 | Tolomako | Austronesian | Malayo-Polynesian | 450 | Endangered | 5 | Pacific |
| 855 | Tolowa | Athabaskan-Eyak-Tlingit | Athabaskan | Awakening | 8 | North America | |
| 2796 | Tomadino | Austronesian | Malayo-Polynesian | 600 | Endangered | 5 | Southeast Asia |
| 2797 | Tombelala | Austronesian | Malayo-Polynesian | 1100 | Threatened | 4 | Southeast Asia |
| 2793 | Tomini | Austronesian | Malayo-Polynesian | 30000 | Threatened | 4 | Southeast Asia |
| 8709 | Tondi Songway Kiini | Songhay | 3000 | Threatened | 4 | Africa | |
| 3524 | Tonsawang | Austronesian | Malayo-Polynesian | 20000 | Vulnerable | 3 | Southeast Asia; Pacific |
| 2140 | Torá | Chapacuran | Southern Chapacuran | 0 | Dormant | 9 | South America |
| 582 | Toram | Afro-Asiatic | Chadic | 4000 | Threatened | 4 | Africa |
| 2139 | Toromona | Pano-Tacanan | Tacanan | 0 | Dormant | 9 | South America |
| 10289 | Torres Strait Creole | Pidgin or Creole | English based | 6000 | Vulnerable | 3 | Australia |
| 3501 | Torwali | Indo-European | Indo-Iranian | 80000 | Vulnerable | 3 | South Asia |
| 3451 | Toto | Sino-Tibetan | Dhimalish | 1400 | Threatened | 4 | South Asia |
| 2488 | Totoli | Austronesian | Malayo-Polynesian | 7500 | Endangered | 5 | Southeast Asia |
| 3540 | Totonac | Totonacan | Totonac | 244033 | At risk | 2 | Mexico, Central America, Caribbean |
| 7589 | Totontepec Mixe | Mixe-Zoquean | Mixean | 5200 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3495 | Totoró | Barbacoan | Northern Barbacoan | 0 | Dormant | 9 | South America |
| 10811 | Touo | Isolate | 1870 | Threatened | 4 | Pacific | |
| 3494 | Towei | Pauwasi | 115 | Endangered | 5 | Southeast Asia | |
| 3505 | Tregami | Indo-European | Indo-Iranian | 1000 | Threatened | 4 | Near East |
| 6990 | Trinidad and Tobago Sign Language | Sign Language | South American | 2000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 7769 | Tsuvadi | Niger-Congo | Atlantic-Congo | 150000 | At risk | 2 | Africa |
| 3813 | Tswapong | Niger-Congo | Atlantic-Congo | 2000 | Threatened | 4 | Africa |
| 2449 | Tuamotuan | Austronesian | Malayo-Polynesian | 14400 | Vulnerable | 3 | Pacific |
| 6513 | Tubatulabal | Uto-Aztecan | Northern Uto-Aztecan | 1 | Critically Endangered | 7 | North America |
| 10479 | Tuha | Turkic | Siberian Turkic | 20 | Critically Endangered | 7 | East Asia |
| 2129 | Tukano | Tucanoan | Eastern Tucanoan | 13996 | Vulnerable | 3 | South America |
| 10453 | Tule | Afro-Asiatic | Chadic | 0 | Dormant | 9 | Africa |
| 5094 | Tulishi | Kadu | 2500 | Threatened | 4 | Africa | |
| 5872 | Tum | Austro-Asiatic | Vietic | 1000 | Endangered | 5 | Southeast Asia |
| 5035 | Tumi | Niger-Congo | Atlantic-Congo | 2270 | Threatened | 4 | Africa |
| 10521 | Tumleo | Austronesian | Malayo-Polynesian | 610 | Endangered | 5 | Pacific |
| 5111 | Tumtum | Kadu | 7300 | Threatened | 4 | Africa | |
| 10467 | Tunayana | Cariban | Parukotoan | 10 | Critically Endangered | 7 | South America |
| 3029 | Tundra Enets | Uralic | Samoyedic | 30 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 2062 | Tundra Nenets | Uralic | Samoyedic | 20000 | Endangered | 5 | Caucasus; Europe; East Asia |
| 3024 | Tundra Yukagir | Yukaghir | 50 | Critically Endangered | 7 | Caucasus; Europe; East Asia | |
| 3527 | Tunebo | Chibchan | Magdalenic | 7231 | Threatened | 4 | South America |
| 4586 | Tunia | Niger-Congo | Atlantic-Congo | 2260 | Threatened | 4 | Africa |
| 8969 | Tunica | Isolate | North American | Awakening | 8 | North America | |
| 5053 | Tunni | Afro-Asiatic | Cushitic | 23000 | Vulnerable | 3 | Africa |
| 4119 | Tunzu | Niger-Congo | Atlantic-Congo | 2500 | Threatened | 4 | Africa |
| 557 | Tuotomb | Austronesian | Malayo-Polynesian | 1000 | Endangered | 5 | Africa |
| 2127 | Tuparí | Tupian | Tuparian | 276 | Endangered | 5 | South America |
| 2695 | Turaka | Trans-New Guinea | Dagan | 25 | Severely Endangered | 6 | Pacific |
| 3507 | Turi | Austro-Asiatic | Munda | 2000 | Threatened | 4 | South Asia |
| 3502 | Turoyo | Afro-Asiatic | Semitic | 84000 | Vulnerable | 3 | Europe; Near East |
| 3512 | Turumsa | Unclassified | Doso-Turumsa? | 5 | Critically Endangered | 7 | Pacific |
| 1168 | Tuscarora | Iroquoian | Northern Iroquoian | 2 | Critically Endangered | 7 | North America |
| 2447 | Tutuba | Austronesian | Malayo-Polynesian | 120 | Threatened | 4 | Pacific |
| 7309 | Tuva | Turkic | Siberian Turkic | 242754 | At risk | 2 | Caucasus; Europe; East Asia |
| 3487 | Tuvaluan | Austronesian | Malayo-Polynesian | 9000 | Vulnerable | 3 | Pacific |
| 3452 | Tuwari | Unclassified | Leonhard Schultze? | 90 | Severely Endangered | 6 | Pacific |
| 5467 | Tuwuli | Niger-Congo | Atlantic-Congo | 11000 | Vulnerable | 3 | Africa |
| 2124 | Tuyuka | Niger-Congo | Atlantic-Congo | 1442 | Threatened | 4 | South America |
| 532 | Twendi | Niger-Congo | Atlantic-Congo | 30 | Severely Endangered | 6 | Africa |
| 3441 | Tz'utujil | Mayan | K'ichean | 47669 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 8602 | Tzeltal | Mayan | Ch'olan-Tseltalan | 261084 | At risk | 2 | Mexico, Central America, Caribbean |
| 8603 | Tzotzil | Mayan | Ch'olan-Tseltalan | 229203 | At risk | 2 | Mexico, Central America, Caribbean |
| 3405 | U | Austro-Asiatic | Palaungic | 40000 | Threatened | 4 | East Asia |
| 9149 | Uab Meto | Austronesian | Malayo-Polynesian | 700000 | At risk | 2 | Southeast Asia |
| 2595 | Ubi | Afro-Asiatic | Chadic | 1500 | Vulnerable | 3 | Africa |
| 8593 | Uda | Niger-Congo | Atlantic-Congo | 10000 | Threatened | 4 | Africa |
| 3021 | Udege | Tungusic | Southern Tungusic | 100 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 3011 | Udi | Northeast Caucasian | Daghestanian | 5500 | Endangered | 5 | Caucasus; Europe; East Asia |
| 3010 | Udmurt | Uralic | Permian | 324338 | Threatened | 4 | Caucasus; Europe; East Asia |
| 3435 | Ugong | Sino-Tibetan | Lolo-Burmese | 50 | Critically Endangered | 7 | Southeast Asia |
| 5845 | Uisai | South Bougainville | Buin | 2500 | Threatened | 4 | Pacific |
| 2798 | Ujir | Austronesian | Malayo-Polynesian | 980 | Endangered | 5 | Southeast Asia |
| 565 | Ukhwejo | Niger-Congo | Atlantic-Congo | 2000 | Threatened | 4 | Africa |
| 3425 | Ukit | Austronesian | Malayo-Polynesian | 120 | Endangered | 5 | Southeast Asia |
| 3433 | Ukuriguma | Trans-New Guinea | Madang | 170 | Endangered | 5 | Pacific |
| 3432 | Ukwa | Niger-Congo | Atlantic-Congo | 100 | Endangered | 5 | Africa |
| 10523 | Ulau-Suain | Austronesian | Malayo-Polynesian | 1271 | Threatened | 4 | Pacific |
| 3009 | Ulch | Tungusic | Southern Tungusic | 1000 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 3428 | Ulithian | Austronesian | Malayo-Polynesian | 3075 | Threatened | 4 | Pacific |
| 10509 | Ulwa | Mongol-Langam-Ulwa | 600 | Severely Endangered | 6 | Pacific | |
| 9829 | Uma' Lung | Austronesian | Malayo-Polynesian | 3000 | Threatened | 4 | Southeast Asia |
| 3424 | Umbugarla | Isolate | 0 | Dormant | 9 | Australia | |
| 3426 | Umbuygamu | Pama-Nyungan | Paman | 7 | Critically Endangered | 7 | Australia |
| 3007 | Ume Saami | Uralic | Saami | 20 | Critically Endangered | 7 | Europe |
| 6725 | Umiida | Worrorran | Western Worrorran | 0 | Dormant | 9 | Australia |
| 2575 | Umpila | Pama-Nyungan | Paman | Critically Endangered | 7 | Australia | |
| 3427 | Umpithamu | Pama-Nyungan | Paman | 2 | Critically Endangered | 7 | Australia |
| 1961 | Umutina | Bororoan | Awakening | 8 | South America | ||
| 2144 | Unami | Algic | Algonquian | 0 | Dormant | 9 | North America |
| 4572 | Uncunwee | Nubian | 16000 | Endangered | 5 | Africa | |
| 6799 | Unggarranggu | Worrorran | Western Worrorran | 0 | Dormant | 9 | Australia |
| 6726 | Unggumi | Worrorran | Western Worrorran | 0 | Dormant | 9 | Australia |
| 10753 | Unua | Austronesian | Malayo-Polynesian | Vulnerable | 3 | Pacific | |
| 6469 | Upland Yuman | Cochimi-Yuman | Yuman | 1625 | Threatened | 4 | North America |
| 1167 | Upper Kuskokwim | Athabaskan-Eyak-Tlingit | Athabaskan | 25 | Critically Endangered | 7 | North America |
| 8349 | Upper Silesian | Indo-European | Balto-Slavic | 56000 | Vulnerable | 3 | Europe |
| 4280 | Upper Sorbian | Indo-European | Balto-Slavic | 18240 | Vulnerable | 3 | Europe |
| 9851 | Upper Southeastern Chinantec | Otomanguean | Chinantecan | 3140 | Threatened | 4 | Mexico, Central America, Caribbean |
| 1165 | Upper Tanana | Athabaskan-Eyak-Tlingit | Dene( Athabaskan) | 55 | Critically Endangered | 7 | North America |
| 3518 | Upper Taromi | Indo-European | Indo-Iranian | Near East | |||
| 9871 | Upper West-Central Chinantec | Otomanguean | Chinantecan | 7410 | Threatened | 4 | Mexico, Central America, Caribbean |
| 3414 | Ura (Papua New Guinea) | East New Britain | Baining | 1900 | Threatened | 4 | Pacific |
| 2446 | Ura (Vanuatu) | Austronesian | Malayo-Polynesian | 6 | Critically Endangered | 7 | Pacific |
| 3417 | Uradhi | Pama-Nyungan | Paman | 2 | Critically Endangered | 7 | Australia |
| 1988 | Urak Lawoi' | Austronesian | Malayo-Polynesian | Endangered | 5 | Southeast Asia | |
| 10694 | Urapmin | Trans-New Guinea | Ok | 370 | Endangered | 5 | Pacific |
| 1960 | Urarina | Isolate | South American | 2000 | Threatened | 4 | South America |
| 10556 | Urat | Torricelli | 6280 | Threatened | 4 | Pacific | |
| 10568 | Urim | Torricelli | 2538 | Threatened | 4 | Pacific | |
| 10575 | Urimo | Torricelli | Marienberg Hills | 835 | Endangered | 5 | Pacific |
| 9289 | Urmia Northeastern Neo-Aramaic | Afro-Asiatic | Semitic | 20560 | Vulnerable | 3 | Near East |
| 3419 | Urningangga | Giimbiyu | 10 | Severely Endangered | 6 | Australia | |
| 1959 | Uru | Chipaya-Uru | 0 | Dormant | 9 | South America | |
| 3415 | Uruangnirin | Austronesian | Malayo-Polynesian | 400 | Endangered | 5 | Southeast Asia |
| 10721 | Uruava | Austronesian | Malayo-Polynesian | Dormant | 9 | Pacific | |
| 7007 | Urubú-Kaapor Sign Language | Sign Language | South American | 7 | Critically Endangered | 7 | South America |
| 1957 | Uruewawau | Tupian | Tupi-Guaranian | 183 | Endangered | 5 | South America |
| 7119 | Uruguayan Sign Language | Sign Language | South American | 7000 | Threatened | 4 | South America |
| 3004 | Urum | Turkic | Kipchak | Endangered | 5 | Caucasus; Europe; East Asia | |
| 3410 | Ushojo | Indo-European | Indo-Iranian | 1000 | Threatened | 4 | South Asia |
| 6198 | Uspanteko | Mayan | K'ichean | 1231 | Threatened | 4 | Mexico, Central America, Caribbean |
| 2965 | Ute | Uto-Aztecan | Northern Uto-Aztecan | 3500 | Endangered | 5 | North America |
| 3409 | Uya | Trans-New Guinea | Madang | 270 | Endangered | 5 | Pacific |
| 10833 | Uzbeki Spoken Arabic | Afro-Asiatic | Semitic | 700 | Endangered | 5 | Near East |
| 10369 | Vaeakau-Taumako | Austronesian | Malayo-Polynesian | 1662 | Vulnerable | 3 | Pacific |
| 3402 | Vafsi | Indo-European | Indo-Iranian | 20000 | Vulnerable | 3 | Near East |
| 5706 | Vaiphei | Sino-Tibetan | Kukish | 39673 | Vulnerable | 3 | South Asia |
| 10769 | Valpei | Austronesian | Malayo-Polynesian | 300 | Endangered | 5 | Pacific |
| 2445 | Vamale | Austronesian | Malayo-Polynesian | 150 | Endangered | 5 | Pacific |
| 10588 | Vanimo | Sko | 1660 | Vulnerable | 3 | Pacific | |
| 3372 | Vano | Austronesian | Malayo-Polynesian | 5 | Critically Endangered | 7 | Pacific |
| 3834 | Varavara | Austronesian | Malayo-Polynesian | 100 | Endangered | 5 | Pacific |
| 3398 | Veddah | Indo-European | Indo-Iranian | 0 | Dormant | 9 | South Asia |
| 2704 | Vehes | Austronesian | Malayo-Polynesian | 70 | Severely Endangered | 6 | Pacific |
| 7118 | Venezuelan Sign Language | Sign Language | South American | South America | |||
| 3002 | Veps | Uralic | Finnic | 3613 | Severely Endangered | 6 | Caucasus; Europe; East Asia |
| 2487 | Vera'a | Austronesian | Malayo-Polynesian | 275 | Endangered | 5 | Pacific |
| 1101 | Vidunda | Niger-Congo | Atlantic-Congo | 10000 | Threatened | 4 | Africa |
| 1849 | Vilela | Lule-Vilela | 0 | Dormant | 9 | South America | |
| 9069 | Villalta | Otomanguean | Zapotecan | Mexico, Central America, Caribbean | |||
| 531 | Vumbu | Niger-Congo | Atlantic-Congo | Endangered | 5 | Africa | |
| 10768 | Vunapu | Austronesian | Malayo-Polynesian | 380 | Endangered | 5 | Pacific |
| 1745 | Vurës | Austronesian | Malayo-Polynesian | 1050 | Threatened | 4 | Pacific |
| 3362 | Wa | Austro-Asiatic | Palaungic | At risk | 2 | Southeast Asia; East Asia | |
| 5259 | Waanyi | Garrwan | 1 | Critically Endangered | 7 | Australia | |
| 2705 | Wab | Austronesian | Malayo-Polynesian | 120 | Endangered | 5 | Pacific |
| 6800 | Wadi-Wadi | Pama-Nyungan | Kulinic | 0 | Dormant | 9 | Australia |
| 3359 | Wadjigu | Pama-Nyungan | Maric | 1 | Critically Endangered | 7 | Australia |
| 9570 | Wae Rana | Austronesian | Malayo-Polynesian | 3000 | Threatened | 4 | Southeast Asia |
| 2576 | Wagiman | Isolate | Australian | 50 | Severely Endangered | 6 | Australia |
| 3351 | Wahau Kenya | Austronesian | Malayo-Polynesian | 8000 | Threatened | 4 | Southeast Asia |
| 3363 | Waigali | Indo-European | Indo-Iranian | 1500 | Threatened | 4 | Near East |
| 3338 | Wailapa | Austronesian | Malayo-Polynesian | 100 | Endangered | 5 | Pacific |
| 2485 | Waima'a | Austronesian | Malayo-Polynesian | 3000 | Threatened | 4 | Pacific |
| 1956 | Waimirí-Atroarí | Cariban | 1120 | Threatened | 4 | South America | |
| 1519 | Waiwai | Cariban | Parukotoan | 3154 | Threatened | 4 | South America |
| 3335 | Wamas | Trans-New Guinea | Madang | 220 | Endangered | 5 | Pacific |
| 3336 | Wambaya | Mirndi | 2 | Critically Endangered | 7 | Australia | |
| 5707 | Wambule | Sino-Tibetan | Kiranti | 15000 | Vulnerable | 3 | South Asia |
| 5525 | Wamey | Niger-Congo | Atlantic-Congo | 17500 | Vulnerable | 3 | Africa |
| 10009 | Wampanoag | Algic | Algonquian | Awakening | 8 | North America | |
| 1955 | Wanano | Tucanoan | Eastern Tucanoan | 2000 | Threatened | 4 | South America |
| 5708 | Wancho Naga | Sino-Tibetan | Brahmaputran | 30000 | Vulnerable | 3 | South Asia |
| 5076 | Wanda | Niger-Congo | Atlantic-Congo | 42810 | Vulnerable | 3 | Africa |
| 3330 | Wanggamala | Pama-Nyungan | Karnic | 1 | Critically Endangered | 7 | Australia |
| 3354 | Wangganguru | Pama-Nyungan | Karnic | 2 | Critically Endangered | 7 | Australia |
| 6269 | Wangkajunga | Pama-Nyungan | Wati | 20 | Severely Endangered | 6 | Australia |
| 6803 | Wangkumara | Pama-Nyungan | Karnic | Awakening | 8 | Australia | |
| 2800 | Wano | Trans-New Guinea | Dani | 7000 | Threatened | 4 | Southeast Asia |
| 3332 | Wantoat | Trans-New Guinea | Finisterre-Huon | 8200 | Threatened | 4 | Pacific |
| 9949 | Wanukaka | Austronesian | Malayo-Polynesian | 14000 | Endangered | 5 | Southeast Asia |
| 2065 | Waorani | Isolate | South American | 1616 | Threatened | 4 | South America |
| 10437 | Wapan | Niger-Congo | Atlantic-Congo | 100000 | At risk | 2 | Africa |
| 5036 | Wãpha | Niger-Congo | Atlantic-Congo | 1610 | Threatened | 4 | Africa |
| 1954 | Wapixana | Arawakan | Northern Arawakan | 10900 | Vulnerable | 3 | South America |
| 1150 | Wappo | Yukian | Awakening | 8 | North America | ||
| 3819 | Wara | Niger-Congo | Atlantic-Congo | 4500 | Threatened | 4 | Africa |
| 1953 | Warao | Isolate | South American | 32400 | Vulnerable | 3 | South America |
| 2707 | Warapu | Sko | Endangered | 5 | Pacific | ||
| 2582 | Warlpiri | Pama-Nyungan | Ngumpin-Yapa | 3000 | Threatened | 4 | Australia |
| 3326 | Warluwarra | Pama-Nyungan | Warluwaric | 3 | Critically Endangered | 7 | Australia |
| 3310 | Warnang | Niger-Congo | Heiban | 1100 | Threatened | 4 | Africa |
| 6651 | Warndarrang | Gunwinyguan | Maran | 0 | Dormant | 9 | Australia |
| 2579 | Warnman | Pama-Nyungan | Wati | 30 | Severely Endangered | 6 | Australia |
| 3323 | Warray | Gunwinyguan | Warrayic | 4 | Critically Endangered | 7 | Australia |
| 3352 | Warrgamay | Pama-Nyungan | Dyirbalic | 3 | Critically Endangered | 7 | Australia |
| 6652 | Warriyangga | Pama-Nyungan | Mantharta | 0 | Dormant | 9 | Australia |
| 6731 | Warrnambool | Pama-Nyungan | Kulinic | 0 | Dormant | 9 | Australia |
| 3308 | Warrwa | Nyulnyulan | Eastern Nyulnyulan | 2 | Critically Endangered | 7 | Australia |
| 2802 | Waru | Austronesian | Malayo-Polynesian | 350 | Endangered | 5 | Southeast Asia |
| 2583 | Warumungu | Pama-Nyungan | Ngumpin-Yapa | 50 | Severely Endangered | 6 | Australia |
| 1938 | Wasco-Wishram | Chinookan | 0 | Dormant | 9 | North America | |
| 1149 | Washo | Isolate | North American | 20 | Severely Endangered | 6 | North America |
| 10618 | Watakataui | Sepik | Sepik Hill | 160 | Endangered | 5 | Pacific |
| 10645 | Watam | Lower Sepik-Ramu | Ramu | 1086 | Threatened | 4 | Pacific |
| 6732 | Wathawurrung | Pama-Nyungan | Kulinic | Awakening | 8 | Australia | |
| 864 | Waunana | Chocoan | 13000 | Threatened | 4 | South America; Mexico, Central America, Caribbean | |
| 1949 | Waurá | Arawakan | Southern Arawakan | 410 | Endangered | 5 | South America |
| 6105 | Wawa | Niger-Congo | Atlantic-Congo | 2500 | Threatened | 4 | Africa |
| 1947 | Wayampí | Tupian | Tupi-Guaranian | 1655 | Threatened | 4 | South America |
| 1948 | Wayana | Cariban | Guianan | 1738 | Threatened | 4 | South America |
| 1566 | Wayoró | Tupian | Tuparian | 5 | Critically Endangered | 7 | South America |
| 3399 | Wayu | Sino-Tibetan | Kiranti | 1520 | Endangered | 5 | South Asia |
| 4404 | Weliki | Trans-New Guinea | Finisterre-Huon | 200 | Endangered | 5 | Pacific |
| 10429 | Welsh | Indo-European | Celtic | 562016 | Vulnerable | 3 | Europe; South America |
| 6733 | Wemba-Wemba | Pama-Nyungan | Kulinic | Awakening | 8 | Australia | |
| 5565 | Wergaia | Pama-Nyungan | Kulinic | 5 | Critically Endangered | 7 | Australia |
| 9509 | Wersing | Timor-Alor-Pantar | Alor | 4000 | Vulnerable | 3 | Southeast Asia |
| 10425 | West Frisian | Indo-European | Germanic | 300000 | At risk | 2 | Europe |
| 10070 | West Tarangan | Austronesian | Malayo-Polynesian | 8500 | Vulnerable | 3 | Southeast Asia |
| 701 | Western Abenaki | Algic | Algonquian | 10 | Critically Endangered | 7 | North America |
| 10537 | Western Alta Mixtec | Otomanguean | Mixtecan | 61530 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 1148 | Western Apache | Athabaskan-Eyak-Tlingit | Athabaskan | 14000 | Threatened | 4 | North America |
| 6273 | Western Arrarnte | Pama-Nyungan | Arandic | 1500 | Threatened | 4 | Australia |
| 10538 | Western Baja Mixtec | Otomanguean | Mixtecan | Mexico, Central America, Caribbean | |||
| 3972 | Western Bru | Austro-Asiatic | Katuic | 20000 | Vulnerable | 3 | Southeast Asia |
| 6250 | Western Bukidnon Manobo | Austronesian | Malayo-Polynesian | 19000 | Vulnerable | 3 | Southeast Asia |
| 4012 | Western Buryat | Mongolic | Common Mongolic | 50000 | Endangered | 5 | Caucasus; Europe; East Asia |
| 9870 | Western Chinantec | Otomanguean | Chinantecan | 3590 | Threatened | 4 | Mexico, Central America, Caribbean |
| 4251 | Western Gurung | Sino-Tibetan | Tamangic | 325000 | Threatened | 4 | South Asia |
| 4058 | Western Highland Chatino | Otomanguean | Zapotecan | 12000 | Vulnerable | 3 | Mexico, Central America, Caribbean |
| 4857 | Western Huasteca Nahuatl | Uto-Aztecan | Southern Uto-Aztecan | 400000 | At risk | 2 | Mexico, Central America, Caribbean |
| 8549 | Western Mansi | Uralic | Mansi | 0 | Dormant | 9 | Caucasus; Europe; East Asia |
| 1825 | Western Mari | Uralic | Mari | 50000 | Vulnerable | 3 | Caucasus; Europe; East Asia |
| 5325 | Western Mewahang | Sino-Tibetan | Kiranti | 4650 | Threatened | 4 | South Asia |
| 3839 | Western Neo-Aramaic | Afro-Asiatic | Semitic | Endangered | 5 | Near East | |
| 9449 | Western Pantar | Timor-Alor-Pantar | 10804 | Vulnerable | 3 | Southeast Asia | |
| 2990 | Western Yiddish | Indo-European | Germanic | 5400 | Threatened | 4 | Europe; Near East |
| 9969 | Weyewa | Austronesian | Malayo-Polynesian | 240000 | At risk | 2 | Southeast Asia |
| 1508 | White Gelao | Tai-Kadai | Kadai | 6000 | Severely Endangered | 6 | Southeast Asia; East Asia |
| 4542 | White Lachi | Tai-Kadai | Kadai | 0 | Dormant | 9 | Southeast Asia |
| 3346 | Wiaki | Torricelli | Maimai | 100 | Critically Endangered | 7 | Pacific |
| 3489 | Wiarumus | Torricelli | Marienberg Hills | 460 | Severely Endangered | 6 | Pacific |
| 1850 | Wichí | Matacoan | 30560 | Vulnerable | 3 | South America | |
| 1003 | Wichita | Caddoan | 0 | Dormant | 9 | North America | |
| 3349 | Wik-Epa | Pama-Nyungan | Paman | 3 | Critically Endangered | 7 | Australia |
| 2584 | Wik-Iiyanh | Pama-Nyungan | Paman | 40 | Severely Endangered | 6 | Australia |
| 3348 | Wik-Keyangan | Pama-Nyungan | Paman | 3 | Critically Endangered | 7 | Australia |
| 3347 | Wik-Me'anha | Pama-Nyungan | Paman | 12 | Severely Endangered | 6 | Australia |
| 2585 | Wik-Mungkan | Pama-Nyungan | Paman | 1060 | Threatened | 4 | Australia |
| 1133 | Wik-Ngathana | Pama-Nyungan | Paman | 100 | Endangered | 5 | Australia |
| 2586 | Wik-Ngatharr | Pama-Nyungan | Paman | 86 | Severely Endangered | 6 | Australia |
| 3345 | Wilawila | Worrorran | Northern Worrorran | 2 | Critically Endangered | 7 | Australia |
| 1146 | Winnebago | Siouan | Mississippi Valley Siouan | 250 | Endangered | 5 | North America |
| 1145 | Wintu | Wintuan | 0 | Dormant | 9 | North America | |
| 3324 | Wiradjuri | Pama-Nyungan | Wiradhuric | 3 | Critically Endangered | 7 | Australia |
| 3344 | Wirangu | Pama-Nyungan | Thura-Yura | Awakening | 8 | Australia | |
| 5177 | Wiru | Isolate | 15300 | Vulnerable | 3 | Pacific | |
| 1674 | Witsuwit'en | Athabaskan-Eyak-Tlingit | Athabaskan | 523 | Severely Endangered | 6 | North America |
| 853 | Wiyot | Algic | Ritwan | Awakening | 8 | North America | |
| 10583 | Wogamusin | Sepik | Wogamus | 368 | Endangered | 5 | Pacific |
| 10525 | Wogeo | Austronesian | Malayo-Polynesian | 1500 | Threatened | 4 | Pacific |
| 2214 | Woi | Austronesian | Malayo-Polynesian | 1800 | Threatened | 4 | Southeast Asia |
| 6734 | Woiwurrung | Pama-Nyungan | Kulinic | Awakening | 8 | Australia | |
| 3328 | Woleaian | Austronesian | Malayo-Polynesian | 1630 | Threatened | 4 | Pacific |
| 10565 | Wom | Torricelli | Kombian | 2500 | Threatened | 4 | Pacific |
| 2803 | Woria | East Geelvink Bay | 6 | Critically Endangered | 7 | Southeast Asia | |
| 5452 | Worla | Worrorran | Southern Worrorran | 5 | Critically Endangered | 7 | Australia |
| 2588 | Worrorra | Worrorran | Western Worrorran | 0 | Dormant | 9 | Australia |
| 3319 | Wotapuri-Katarqalai | Indo-European | Indo-Iranian | 0 | Dormant | 9 | Near East |
| 6736 | Wotjobaluk | Pama-Nyungan | Kulinic | Awakening | 8 | Australia | |
| 2804 | Wotu | Austronesian | Malayo-Polynesian | 5000 | Threatened | 4 | Southeast Asia |
| 2589 | Wubuy | Gunwinyguan | East Arnhem | 300 | Endangered | 5 | Australia |
| 6271 | Wudjari | Pama-Nyungan | Nyungic | 1 | Critically Endangered | 7 | Australia |
| 3312 | Wulna | Limilngan | 1 | Critically Endangered | 7 | Australia | |
| 1327 | Wunai Bunu | Hmong-Mien | Hmongic | Threatened | 4 | East Asia | |
| 3315 | Wunambal | Worrorran | Northern Worrorran | 20 | Severely Endangered | 6 | Australia |
| 3321 | Wusi | Austronesian | Malayo-Polynesian | 350 | Endangered | 5 | Pacific |
| 10589 | Wutung | Sko | 610 | Endangered | 5 | Pacific | |
| 1311 | Wutunhua | Mixed Language | Chinese-Tibetan-Mongolian | 4000 | Endangered | 5 | East Asia |
| 2050 | Xaad Kil (Haida) | Isolate | North American | 75 | Critically Endangered | 7 | North America |
| 3975 | Xakriabá | Jean | Central Je | 0 | Dormant | 9 | South America |
| 1653 | Xavante | Jean | Central Je | 13303 | Vulnerable | 3 | South America |
| 1652 | Xerente | Jean | Central Je | 2569 | Threatened | 4 | South America |
| 1651 | Xetá | Tupian | Tupi-Guaranian | 2 | Critically Endangered | 7 | South America |
| 3255 | Xiandao | Sino-Tibetan | Lolo-Burmese | 40 | Endangered | 5 | East Asia |
| 1185 | Xibe | Tungusic | Southern Tungusic | 27000 | Vulnerable | 3 | East Asia |
| 1001 | Xipaya | Tupian | Jurunan | Dormant | 9 | South America | |
| 1650 | Xokleng | Jean | Southern Je | 790 | Endangered | 5 | South America |
| 2385 | X̄enaksialak̓ala / X̄a''islak̓ala (Haisla) | Wakashan | Northern Wakashan | 89 | Critically Endangered | 7 | North America |
| 4727 | Yaaku | Afro-Asiatic | Cushitic | 50 | Severely Endangered | 6 | Africa |
| 6740 | Yabula-Yabula | Pama-Nyungan | Yotayotic | Awakening | 8 | Australia | |
| 5353 | Yaeyama | Japonic | Ryukyuan | Endangered | 5 | East Asia | |
| 3356 | Yafi | Pauwasi | 170 | Endangered | 5 | Southeast Asia | |
| 1647 | Yagan | Isolate | South American | 1 | Critically Endangered | 7 | South America |
| 6804 | Yagara | Pama-Nyungan | Durubulic | Awakening | 8 | Australia | |
| 3217 | Yaghnobi | Indo-European | Indo-Iranian | 13500 | Vulnerable | 3 | Near East |
| 1648 | Yagua | Yaguan | 4297 | Threatened | 4 | South America | |
| 10557 | Yahang | Torricelli | Maimai | 1182 | Endangered | 5 | Pacific |
| 1641 | Yahuna | Tucanoan | Western Tucanoan | 0 | Dormant | 9 | South America |
| 3788 | Yan-nhangu | Pama-Nyungan | Yolngu | 265 | Endangered | 5 | Australia |
| 6741 | Yanda | Pama-Nyungan | Maric | 0 | Dormant | 9 | Australia |
| 8734 | Yanda Dom | Niger-Congo | Dogon | 2000 | Threatened | 4 | Africa |
| 3173 | Yandruwandha | Pama-Nyungan | Karnic | 2 | Critically Endangered | 7 | Australia |
| 4887 | Yangkaal | Tangkic | 1 | Critically Endangered | 7 | Australia | |
| 302 | Yangkam | Niger-Congo | Atlantic-Congo | 400 | Critically Endangered | 7 | Africa |
| 5986 | Yangman | Yangmanic | 10 | Critically Endangered | 7 | Australia | |
| 4600 | Yango | Niger-Congo | Atlantic-Congo | 3000 | Threatened | 4 | Africa |
| 3789 | Yankunytjatjara | Pama-Nyungan | Wati | 60 | Critically Endangered | 7 | Australia |
| 1375 | Yanomam | Yanomaman | 4000 | Threatened | 4 | South America | |
| 4248 | Yanomamö | Yanomaman | 18234 | Vulnerable | 3 | South America | |
| 4317 | Yanyuwa | Pama-Nyungan | Warluwaric | 52 | Severely Endangered | 6 | Australia |
| 851 | Yaqui | Uto-Aztecan | Southern Uto-Aztecan | 21000 | Vulnerable | 3 | North America; Mexico, Central America, Caribbean |
| 6806 | Yaraldi | Pama-Nyungan | Lower Murray | 0 | Dormant | 9 | Australia |
| 3165 | Yarawata | Trans-New Guinea | Madang | 130 | Endangered | 5 | Pacific |
| 6742 | Yardliyawarra | Pama-Nyungan | Yarli | 0 | Dormant | 9 | Australia |
| 6807 | Yarluyandi | Pama-Nyungan | Karnic | 0 | Dormant | 9 | Australia |
| 3166 | Yarsun | Austronesian | Malayo-Polynesian | 200 | Endangered | 5 | Southeast Asia |
| 5315 | Yaru Quechua | Quechuan | Quechua I | 60000 | Vulnerable | 3 | South America |
| 1644 | Yaruro | Isolate | South American | 7400 | Threatened | 4 | South America |
| 1642 | Yaté | Isolate | South American | 1998 | Threatened | 4 | South America |
| 3158 | Yau | Torricelli | Wapei | 140 | Endangered | 5 | Pacific |
| 5082 | Yauma | Niger-Congo | Atlantic-Congo | 22200 | Vulnerable | 3 | Africa |
| 3128 | Yautepec Zapotec | Otomanguean | Zapotecan | 310 | Endangered | 5 | Mexico, Central America, Caribbean |
| 5312 | Yauyos Quechua | Quechuan | Central Quechua | 450 | Critically Endangered | 7 | South America |
| 1640 | Yavitero | Arawakan | Northern Arawakan | 0 | Dormant | 9 | South America |
| 7173 | Yaw | Sino-Tibetan | Lolo-Burmese | 10000 | Endangered | 5 | Southeast Asia |
| 1639 | Yawalapití | Arawakan | Southern Arawakan | 8 | Critically Endangered | 7 | South America |
| 1649 | Yawarana | Cariban | Venezuelan | 25 | Critically Endangered | 7 | South America |
| 3159 | Yawarrawarrka | Pama-Nyungan | Karnic | 1 | Critically Endangered | 7 | Australia |
| 6744 | Yawijibaya | Worrorran | Western Worrorran | 0 | Dormant | 9 | Australia |
| 3212 | Yawiyo | Unclassified | Leonhard Schultze? | 80 | Severely Endangered | 6 | Pacific |
| 3160 | Yawuru | Nyulnyulan | Eastern Nyulnyulan | 5 | Critically Endangered | 7 | Australia |
| 6654 | Yaygir | Pama-Nyungan | Gumbaynggiric | 0 | Dormant | 9 | Australia |
| 3156 | Yazgulyami | Indo-European | Indo-Iranian | 7500 | Vulnerable | 3 | Near East |
| 3280 | Yazva | Uralic | Permian | 200 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 1637 | Yekuana | Cariban | Guianan | 6630 | Threatened | 4 | South America |
| 10812 | Yele | Isolate | Pacific | 6000 | Threatened | 4 | Pacific |
| 1207 | Yellow Uyghur | Turkic | Siberian Turkic | 4600 | Threatened | 4 | East Asia |
| 10615 | Yelogu | Sepik | Ndu | 700 | Endangered | 5 | Pacific |
| 2702 | Yem | Afro-Asiatic | Omotic | Threatened | 4 | Africa | |
| 10602 | Yerakai | Isolate | 390 | Endangered | 5 | Pacific | |
| 2709 | Yeri | Torricelli | Wapei | 60 | Severely Endangered | 6 | Pacific |
| 1435 | Yerong | Tai-Kadai | Kadai | 300 | Endangered | 5 | East Asia |
| 10593 | Yessan-Mayo | Sepik | Tama | 900 | Endangered | 5 | Pacific |
| 10579 | Yetfa-Biksi | Isolate | 1000 | Threatened | 4 | Southeast Asia | |
| 3201 | Yevanic | Indo-European | Greek | Dormant | 9 | Near East | |
| 1886 | Yeyi | Niger-Congo | Atlantic-Congo | 20000 | Severely Endangered | 6 | Africa |
| 3210 | Yidgha | Indo-European | Indo-Iranian | 6000 | Threatened | 4 | South Asia |
| 3197 | Yidiny | Pama-Nyungan | Yidinic | 12 | Severely Endangered | 6 | Australia |
| 5447 | Yiiji | Worrorran | Northern Worrorran | 50 | Severely Endangered | 6 | Australia |
| 10545 | Yil | Torricelli | Wapei | 2134 | Threatened | 4 | Pacific |
| 10717 | Yilan Creole | Pidgin or Creole | Japanese based | 3000 | Endangered | 5 | East Asia |
| 2711 | Yimas | Lower Sepik-Ramu | Lower Sepik | 250 | Endangered | 5 | Pacific |
| 5709 | Yimchungru Naga | Sino-Tibetan | Angami-Pochuri | 92100 | Vulnerable | 3 | South Asia |
| 3193 | Yindjibarndi | Pama-Nyungan | Warluwaric | 650 | Severely Endangered | 6 | Australia |
| 3192 | Yindjilandji | Pama-Nyungan | Warluwaric | 1 | Critically Endangered | 7 | Australia |
| 3198 | Yingkarta | Pama-Nyungan | Kartu | 2 | Critically Endangered | 7 | Australia |
| 6808 | Yinhawangka | Pama-Nyungan | Ngayarta | Critically Endangered | 7 | Australia | |
| 2590 | Yir-Yoront | Pama-Nyungan | Paman | 15 | Severely Endangered | 6 | Australia |
| 10542 | Yis | Torricelli | Wapei | 489 | Endangered | 5 | Pacific |
| 6747 | Yitha-Yitha | Pama-Nyungan | Lower Murray | 0 | Dormant | 9 | Australia |
| 7193 | Yogyakarta Sign Language | Sign Language | Southeast Asian | 2450 | Threatened | 4 | Southeast Asia |
| 2760 | Yoke | Lower Mamberamo | 200 | Endangered | 5 | Southeast Asia | |
| 6146 | Yokuts | Yokutsan | 10 | Critically Endangered | 7 | North America | |
| 3170 | Yonaguni | Japonic | Ryukyuan | 1000 | Severely Endangered | 6 | East Asia |
| 10691 | Yonggom | Trans-New Guinea | Ok | 4000 | Threatened | 4 | Southeast Asia; Pacific |
| 6656 | Yorta Yorta | Pama-Nyungan | Yotayotic | Awakening | 8 | Australia | |
| 4328 | Youle Jinuo | Sino-Tibetan | Lolo-Burmese | 10450 | Severely Endangered | 6 | East Asia |
| 1325 | Younuo Bunu | Hmong-Mien | Hmongic | Threatened | 4 | East Asia | |
| 6949 | Yucatec | Mayan | Yucatecan | 706000 | At risk | 2 | Mexico, Central America, Caribbean |
| 7000 | Yucatec Maya Sign Language | Sign Language | Mexican, Central American, or Caribbean | 500 | Endangered | 5 | Mexico, Central America, Caribbean |
| 1002 | Yuchi | Isolate | North American | 6 | Critically Endangered | 7 | North America |
| 1635 | Yucuna | Arawakan | Northern Arawakan | 550 | Endangered | 5 | South America |
| 3162 | Yug | Yeniseian | Northern Yeniseian | 5 | Critically Endangered | 7 | Caucasus; Europe; East Asia |
| 5257 | Yugambal | Pama-Nyungan | Yuin-Kuric | 1 | Critically Endangered | 7 | Australia |
| 634 | Yuhup | Nadahup | Eastern Makuan | 475 | Vulnerable | 3 | South America |
| 633 | Yuki | Tupian | Tupi-Guaranian | 140 | Endangered | 5 | South America |
| 632 | Yukpa | Cariban | 11173 | Vulnerable | 3 | South America | |
| 6107 | Yukuben | Niger-Congo | Atlantic-Congo | 16000 | Vulnerable | 3 | Africa |
| 5245 | Yulparija | Pama-Nyungan | Wati | 100 | Severely Endangered | 6 | Australia |
| 2307 | Yulu | Central Sudanic | Bongo-Bagirmi | 4000 | Threatened | 4 | Africa |
| 1634 | Yuracaré | Isolate | South American | 1809 | Threatened | 4 | South America |
| 1041 | Yurok | Algic | Ritwan | Awakening | 8 | North America | |
| 2770 | Yurutí | Tucanoan | Eastern Tucanoan | 687 | Endangered | 5 | South America |
| 5987 | Yuwaalaraay | Pama-Nyungan | Wiradhuric | 1 | Critically Endangered | 7 | Australia |
| 9071 | Zaachila Zapotec | Otomanguean | Zapotecan | 550 | Endangered | 5 | Mexico, Central America, Caribbean |
| 10434 | Zaar | Afro-Asiatic | Chadic | 150000 | Vulnerable | 3 | Africa |
| 3140 | Zakhring | Sino-Tibetan | Midzu | 1000 | Endangered | 5 | South Asia; East Asia |
| 10489 | Zakshi | Afro-Asiatic | Chadic | 500 | Endangered | 5 | Africa |
| 4587 | Zan Gula | Niger-Congo | Atlantic-Congo | 5000 | Threatened | 4 | Africa |
| 3144 | Zangskari | Sino-Tibetan | Bodish | 5000 | Threatened | 4 | South Asia |
| 3146 | Zangwal | Afro-Asiatic | Chadic | 100 | Endangered | 5 | Africa |
| 629 | Záparo | Zaparoan | 3 | Critically Endangered | 7 | South America | |
| 3145 | Zaramo | Niger-Congo | Atlantic-Congo | Critically Endangered | 7 | Africa | |
| 10485 | Zari | Afro-Asiatic | Chadic | 0 | Dormant | 9 | Africa |
| 5168 | Zauzou | Sino-Tibetan | Lolo-Burmese | 2100 | Endangered | 5 | East Asia |
| 3092 | Zay | Afro-Asiatic | Semitic | 4000 | Threatened | 4 | Africa |
| 5808 | Zaysé-Zergulla | Afro-Asiatic | Omotic | 21000 | Vulnerable | 3 | Africa |
| 2425 | Zazao | Austronesian | Malayo-Polynesian | Critically Endangered | 7 | Pacific | |
| 3094 | Zeem | Afro-Asiatic | Chadic | 0 | Dormant | 9 | Africa |
| 10072 | Zefra'i | Indo-European | Indo-Iranian | 3000 | Threatened | 4 | Near East |
| 1259 | Zeme Naga | Sino-Tibetan | Zemeic | 34100 | Vulnerable | 3 | South Asia |
| 1253 | Zemiaki | Indo-European | Indo-Iranian | 450 | Endangered | 5 | Near East |
| 241 | Zenaga | Afro-Asiatic | Berber | 200 | Endangered | 5 | Africa |
| 10872 | Zenzontepec Chatino | Otomanguean | Zapotecan | 8000 | Threatened | 4 | Mexico, Central America, Caribbean |
| 5610 | Zhaba | Sino-Tibetan | Qiangic | 7700 | Threatened | 4 | East Asia |
| 4573 | Zialo | Niger-Congo | Mande | 25000 | Vulnerable | 3 | Africa |
| 9072 | Zimatlán | Otomanguean | Zapotecan | Mexico, Central America, Caribbean | |||
| 2653 | Zirenkel | Afro-Asiatic | Chadic | 2500 | Threatened | 4 | Africa |
| 3142 | Ziriya | Niger-Congo | Atlantic-Congo | 0 | Dormant | 9 | Africa |
| 3802 | Zizilivakan | Afro-Asiatic | Chadic | Endangered | 5 | Africa | |
| 1632 | Zo'é | Tupian | Tupi-Guaranian | 177 | Endangered | 5 | South America |
| 1249 | Zome | Sino-Tibetan | Kukish | 17000 | Vulnerable | 3 | South Asia; Southeast Asia |
| 1630 | Zoró | Tupian | Mondean | 599 | Endangered | 5 | South America |
| 4196 | Zoroastrian Dari | Indo-European | Indo-Iranian | Endangered | 5 | Near East | |
| 10464 | Zul | Afro-Asiatic | Chadic | 4000 | Threatened | 4 | Africa |
| 559 | Zumaya | Afro-Asiatic | Chadic | Critically Endangered | 7 | Africa | |
| 627 | Zuni | Isolate | North American | 9000 | Threatened | 4 | North America |
| 1629 | Zuruahã | Arawan | 136 | Endangered | 5 | South America | |
| 595 | |Gui | Khoe | Kalahari | 1470 | Threatened | 4 | Africa |
| 597 | ||Ani | Khoe | Kalahari | 1000 | Endangered | 5 | Africa |
| 596 | ||Gana | Khoe | Kalahari | 1030 | Threatened | 4 | Africa |
| 594 | ǂHoan | Kx'a | 40 | Severely Endangered | 6 | Africa | |
| 9389 | ǂKx'au||'ein | Kx'a | Threatened | 4 | Africa | ||
| 1684 | ᏣᎳᎩ (Cherokee) | Iroquoian | 2100 | Threatened | 4 | North America |
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