| Language | Group |
|---|
|
| Aari | Afroasiatic |
| AB language | Indo-European |
| Abau | Sepik |
| Abaza | Northwest Caucasian |
| Abenaki | Algic |
| Abkhaz or Abkhazian | Northwest Caucasian |
| Abujmaria or Madiya or Maria | Dravidian |
| Acehnese | Austronesian |
| Adamorobe Sign Language | Language isolate |
| Adele | Niger-Congo |
| Adyghe or West Circassian | Northwest Caucasian |
| Afar | Afroasiatic |
| Afrikaans | Indo-European |
| Afro-Seminole Creole | English-based creole |
| Aguaruna | Chicham |
| Ahom | Kra–Dai |
| Aimaq or Barbari | Indo-European |
| Ainu, Hokkaido | Ainu |
| Ainu, Kuril | Ainu |
| Ainu, Sakhalin | Ainu |
| Ajawa | Afroasiatic |
| Ajem-Turkic or Ajami Turkic | Turkic |
| Aka-Bea | Great Andamanese |
| Aka-Bo | Great Andamanese |
| Aka-Cari | Great Andamanese |
| Aka-Jeru | Great Andamanese |
| Aka-Kede | Great Andamanese |
| Aka-Kol | Great Andamanese |
| Aka-Kora | Great Andamanese |
| Akan | Niger-Congo |
| Akar-Bale | Great Andamanese |
| Akateko | Mayan |
| Akawaio | Cariban |
| Akkadian | Afroasiatic |
| Aklanon | Bisayan |
| Alabama | Muskogean |
| Alanic | Indo-European |
| Albanian | Indo-European |
| Albanian, Arbëresh | Indo-European |
| Albanian, Arvanitika or Arvanitic | Indo-European |
| Albanian, Gheg | Indo-European |
| Albanian, Tosk | Indo-European |
| Alchuka | Tungusic |
| Aleut | Eskimo–Aleut |
| Aleut, Mednyj | Russian and Aleut-based mixed language |
| Algonquin | Algic |
| Alsatian | Indo-European |
| Altay | Turkic |
| Alyutor or Alutor | Chukotko-Kamchatkan |
| Alzenau German | Indo-European |
| Amdang | Nilo-Saharan |
| American Sign Language | Francosign |
| Amharic | Afroasiatic |
| Ammonite | Afroasiatic |
| Amorite | Afroasiatic |
| Amuzgo | Oto-Manguean |
| Angami Naga Sign Language | Language isolate |
| Angika | Indo-European |
| Anyin | Niger-Congo |
| Ao | Sino-Tibetan |
| Aquitanian | Basque |
| Arabic | Afroasiatic |
| Arabic, Algerian | Afroasiatic |
| Arabic, Algerian Saharan | Afroasiatic |
| Arabic, Anatolian | Afroasiatic |
| Arabic, Andalusian or Andalusi Arabic | Afroasiatic |
| Arabic, Bahrani | Afroasiatic |
| Arabic, Bareqi | Afroasiatic |
| Arabic, Bimbashi or Mongallese | Afroasiatic |
| Arabic, Central Asian | Afroasiatic |
| Arabic, Chadian | Afroasiatic |
| Arabic, Classical | Afroasiatic |
| Arabic, Cypriot | Afroasiatic |
| Arabic, Dhofari | Afroasiatic |
| Arabic, Egyptian | Afroasiatic |
| Arabic, Gilit | Afroasiatic |
| Arabic, Gulf | Afroasiatic |
| Arabic, Hadhrami | Afroasiatic |
| Arabic, Hassaniya | Afroasiatic |
| Arabic, Hejazi | Afroasiatic |
| Arabic, Jebli | Afroasiatic |
| Arabic, Jijel | Afroasiatic |
| Arabic, Juba or South Sudanese Arabic | Afroasiatic |
| Arabic, Judeo-Iraqi or Yahudic | Afroasiatic |
| Arabic, Judeo-Moroccan | Afroasiatic |
| Arabic, Judeo-Tripolitanian | Afroasiatic |
| Arabic, Judeo-Yemeni | Afroasiatic |
| Arabic, Khuzestani | Afroasiatic |
| Arabic, Levantine | Afroasiatic |
| Arabic, Libyan | Afroasiatic |
| Arabic, Maridi | Afroasiatic |
| Arabic, Modern Standard | Afroasiatic |
| Arabic, Moroccan | Afroasiatic |
| Arabic, Nabataean | Afroasiatic |
| Arabic, Najdi | Afroasiatic |
| Arabic, Qeltu or North Mesopotamian Arabic | Afroasiatic |
| Arabic, Northwest Arabian, Levantine Bedawi Arabic, or Eastern Egyptian Bedawi Arabic | Afroasiatic |
| Arabic, Nubi or Ki-Nubi | Afroasiatic |
| Arabic, Omani | Afroasiatic |
| Arabic, Sanʽani | Afroasiatic |
| Arabic, Saʽidi | Afroasiatic |
| Arabic, Shihhi | Afroasiatic |
| Arabic, Shirvani | Afroasiatic |
| Arabic, Sicilian or Siculo-Arabic | Afroasiatic |
| Arabic, Sudanese | Afroasiatic |
| Arabic, Taʽizzi-Adeni or Southern Yemeni Arabic | Afroasiatic |
| Arabic, Tihamiyya | Afroasiatic |
| Arabic, Tunisian | Afroasiatic |
| Aragonese | Indo-European |
| Aramaic | Afroasiatic |
| Are | Austronesian |
| ꞋAreꞌare | Austronesian |
| Argobba | Afroasiatic |
| Arin | Yeniseian |
| Aromanian | Indo-European |
| Armazic | Afroasiatic |
| Armenian | Indo-European |
| Armenian, Eastern | Indo-European |
| Armenian, Homshetsi | Indo-European |
| Armenian, Western | Indo-European |
| Armenian, Zok or Agulis | Indo-European |
| Armenian Sign Language | Language isolate |
| Aro | Afroasiatic |
| Asa | Afroasiatic |
| Ashkun | Indo-European |
| Assamese | Indo-European |
| Ateso or Teso | Nilotic |
| Asháninka | Arawakan |
| Ashokan Prakrit | Indo-European |
| Asi | Austronesian |
| Asturian | Indo-European |
| Asturleonese | Indo-European |
| Atong Language | Sino-Tibetan |
| Auslan | BANZSL |
| Avar | Northeast Caucasian |
| Avestan | Indo-European |
| Awadhi | Indo-European |
| Aymara | Aymaran |
| Äynu | Turkic |
| Ayoreo | Zamucoan |
| Azerbaijani or Azeri | Turkic |
|
| Babuza | Austronesian |
| Bactrian | Indo-European |
| Badaga | Dravidian |
| Badeshi | Indo-European |
| Baekje | Unclassified language, perhaps Koreanic, Puyŏ, and/or Han |
| Bahnar | Austroasiatic |
| Bailang | Sino-Tibetan |
| Bakor | Niger-Congo |
| Bala | Tungusic |
| Balinese | Austronesian |
| Balkan Gagauz or Rumelian Turkish | Turkic |
| Balochi | Indo-European |
| Balti | Sino-Tibetan |
| Bambara or Bamanankan | Niger-Congo |
| Banjar | Austronesian |
| Banyumasan | Austronesian |
| Barranquenho or Barranquenhu | Alentejan Portuguese, Extremaduran Spanish, and Andalusian Spanish-based mixed language |
| Bartangi | Indo-European |
| Basaa | Niger-Congo |
| Basay | Austronesian |
| Bashkardi | Indo-European |
| Bashkir | Turkic |
| Basque or Euskara/Euskera | Language isolate |
| Batak Karo | Austronesian |
| Batak Toba | Austronesian |
| Bats | North Caucasian |
| Bavarian | Indo-European |
| Bawean and Bawean Creole | Austronesian |
| Beja | Afroasiatic |
| Belarusian | Indo-European |
| Belhare | Sino-Tibetan |
| Berta | Nilo-Saharan |
| Bemba | Niger-Congo |
| Bengali | Indo-European |
| Bezhta | Northeast Caucasian |
| Berber | Afroasiatic |
| Betawi | Austronesian |
| Bete | Niger–Congo |
| Bété | Niger–Congo |
| Bhili | Indo-European |
| Bhojpuri | Indo-European |
| Bijil Neo-Aramaic | Afroasiatic |
| Bikol | Austronesian |
| Bikya or Furu | Niger-Congou |
| Bissa | Niger-Congo |
| Blackfoot | Algic |
| Bodo | Sino-Tibetan |
| Boholano | Austronesian |
| Bohtan Neo-Aramaic | Afroasiatic |
| Bonan or Paoan | Mongolic |
| Bororo | Bororoan |
| Bosnian | Indo-European |
| Brahui | Dravidian |
| Breton | Indo-European |
| British Sign Language | BANZSL |
| Bru | Austroasiatic |
| Bua | Niger–Congo |
| Buginese | Austronesian |
| Bukusu | Niger-Congo |
| Bulgar | Turkic |
| Bulgarian | Indo-European |
| Bulgarian, Banat | Indo-European |
| Bunjevac | Indo-European |
| Burmese | Sino-Tibetan |
| Burushaski | Language isolate |
| Buryat | Mongolic |
| Buyeo | Puyŏ |
|
| Caluyanon or Caluyanun | Austronesian |
| Cameroonian Pidgin English | English-based creole |
| Camfranglais | Cameroonian French, Cameroonian English, and Cameroonian Pidgin English-based mixed language |
| Canaano-Akkadian | Akkadian and Canaanite-based mixed language |
| Cape Verdean Creole or Kabuverdianu | Portuguese-based creole |
| Carrier or Dakelh | Na-Dene |
| Catalan | Indo-European |
| Catalan Sign Language | Catalan Sign |
| Caucasian Sign Language | Language isolate |
| Cavineña | Tacanan |
| Cayuga | Iroquoian |
| Cebuano | Austronesian |
| Chabacano or Chavacano | Spanish-based creole |
| Chaga or Kichagga | Niger-Congo |
| Chagatai | Turkic |
| Chakavian | Indo-European |
| Chakma | Indo-European |
| Cham | Austronesian |
| Chamorro or Chamoru | Austronesian |
| Chaouia or Tachawit | Afroasiatic |
| Chatino | Oto-Manguean |
| Chechen | Northeast Caucasian |
| Chenchu | Dravidian |
| Chenoua | Afroasiatic |
| Cherokee | Iroquoian |
| Cheyenne | Algic |
| Chhattisgarhi | Indo-European |
| Chichimeca Jonaz | Oto-Manguean |
| Chickasaw | Muskogean |
| Chintang or Chhintang | Kiranti |
| Chilcotin or Tsilhqot'in | Na-Dene |
| Chinantec | Oto-Manguean |
| Chinese Kyakala | Tungusic |
| Chinese | Sino-Tibetan |
| Chinese, Ba–Shu | Sino-Tibetan |
| Chinese, Cantonese | Sino-Tibetan |
| Chinese, Gan | Sino-Tibetan |
| Chinese, Hakka | Sino-Tibetan |
| Chinese, Mandarin | Sino-Tibetan |
| Chinese, Taz | Sino-Tibetan |
| Chinese, Waxiang | Sino-Tibetan |
| Chinese, Wenzhounese | Sino-Tibetan |
| Chinese, Wu | Sino-Tibetan |
| Chinese, Xiang | Sino-Tibetan |
| Chinese, Yue | Sino-Tibetan |
| Chiricahua or Mescalero-Chiricahua Apache | Na-Dene |
| Chichewa or Nyanja | Niger-Congo |
| Chimané or Tsimané or Mosetén | Language isolate |
| Chipaya | Uru-Chipaya |
| Chipewyan | Na-Dene |
| Chiquimulilla | Xincan |
| Chiquitano | Language isolate |
| Chittagonian | Indo-European |
| Chocho or Chocholtec | Oto-Manguean |
| Choctaw | Muskogean |
| Ch'ol | Mayan |
| Chontal de Oaxaca | Tequistlatecan |
| Chontal de Tabasco | Mayan |
| Chorasmian or Khwarezmian | Indo-European |
| Christian Palestinian Aramaic | Afroasiatic |
| Chuj | Mayan |
| Chukchi or Chukot | Chukotko-Kamchatkan |
| Chulym | Turkic |
| Church Slavonic | Indo-European |
| Chuukese or Trukese | Austronesian |
| Chuvan | Yukaghir |
| Chuvash | Turkic |
| Cochin Portuguese Creole or Vypin Indo-Portuguese | Portuguese-based creole language |
| Cocoma or Cocama | Tupian |
| Cocopah | Yuman-Cochimí |
| Coeur d’Alene | Salishan |
| Comanche | Uto-Aztecan |
| Comorian | Niger-Congo |
| Coptic | Afroasiatic |
| Cora | Uto-Aztecan |
| Cornish | Indo-European |
| Corsican | Indo-European |
| Cree | Algic |
| Cree, East or James Bay Cree | Algic |
| Cree, Moose | Algic |
| Cree, Plains | Algic |
| Cree, Swampy | Algic |
| Cree, Woods or Woodland Cree | Algic |
| Crimean Tatar or Crimean Turkish | Turkic |
| Croatian | Indo-European |
| Croatian, Burgenland | Indo-European |
| Cuicatec | Oto-Manguean |
| Cuyonon | Austronesian |
| Czech | Indo-European |
|
| Dadanitic | Afroasiatic |
| Dagaare | Niger-Congo |
| Dagbani | Niger-Congo |
| Dahlik | Afroasiatic |
| Dalecarlian | Indo-European |
| Dalmatian | Indo-European |
| Dameli | Indo-European |
| Danish | Indo-European |
| Dargin | Northeast Caucasian |
| Dari or Dari Persian | Indo-European |
| Daur or Dagur | Mongolic |
| Daylami | Indo-European |
| Dena'ina or Tanaina | Na-Dene |
| Dhatki | Indo-European |
| Dhivehi or Maldivian | Indo-European |
| Dicamay Agta | Austronesian |
| Dida | Niger-Congo |
| Dioula or Jula | Niger-Congo |
| Dogri | Indo-European |
| Dogrib or Tli Cho | Na-Dene |
| Dolgan | Turkic |
| Domaaki or Dumaki | Indo-European |
| Dongxiang or Santa | Mongolic |
| Duala | Niger-Congo |
| Dungan | Sino-Tibetan |
| Dura | Greater Magaric |
| Dutch | Indo-European |
| Dzhidi or Judeo-Persian | Indo-European |
| Dzongkha | Sino-Tibetan |
|
| Eblaite | Afroasiatic |
| Edomite | Afroasiatic |
| Egyptian | Afroasiatic |
| Ekoti | Niger-Congo |
| Elamite | Afroasiatic |
| Enets or Yenisey Samoyed | Samoyedic |
| English | Indo-European |
| English, Euro | Indo-European |
| English, International | Indo-European |
| English, Northern | Indo-European |
| English, Northumbrian | Indo-European |
| Erzya | Uralic |
| Estonian | Uralic |
| Even | Tungusic |
| Evenk or Evenki | Tungusic |
| Ewe | Niger-Congo |
| Extremaduran | Indo-European |
|
| Faetar or Faetar–Cigliàje | Indo-European |
| Faifi | Afroasiatic |
| Faliscan | Indo-European |
| Fang | Niger-Congo |
| Faroese | Indo-European |
| Favorlang | Austronesian |
| Fijian | Austronesian |
| Filipino | Austronesian |
| Finland-Swedish Sign Language | Swedish Sign |
| Finnish | Uralic |
| Finnish Sign Language | Swedish Sign |
| Flemish | Indo-European |
| Flemish, East | Indo-European |
| Flemish, French | Indo-European |
| Flemish, West | Indo-European |
| Foodo | Niger-Congo |
| Fon | Niger-Congo |
| Franco-Provençal or Arpitan | Indo-European |
| French | Indo-European |
| French Sign Language | Francosign |
| Frisian, East | Indo-European |
| Frisian, Hindeloopen | Indo-European |
| Frisian, North | Indo-European |
| Frisian, Saterland | Indo-European |
| Frisian, Schiermonnikoog | Indo-European |
| Frisian, Terschelling | Indo-European |
| Frisian, West or Mainland West Frisian | Indo-European |
| Friulian | Indo-European |
| Fula, Fulfulde, or Fulani | Niger-Congo |
| Fur | Nilo-Saharan |
| Futunan | Austronesian |
| Futuna-Aniwa | Austronesian |
|
| Ga | Niger-Congo |
| Gadaba | Dravidian |
| Gagauz | Turkic |
| Galatian | Indo-European |
| Galician | Indo-European |
| Galindian | Indo-European |
| Ganda | Niger-Congo |
| Gangte | Sino-Tibetan |
| Gardiol | Indo-European |
| Garhwali | Indo-European |
| Gawar-Bati or Gowari or Narsati | Indo-European |
| Gaya | Unclassified language |
| Gayo | Austronesian |
| Ge'ez | Afroasiatic |
| Gelao | Kra–Dai |
| Gen or Gẽ or Mina | Niger-Congo |
| Georgian | South Caucasian |
| German | Indo-European |
| German Sign Language | DGSic |
| Gikuyu or Kikuyu | Niger-Congo |
| Gilbertese or Kiribati | Austronesian |
| Gilaki | Indo-European |
| Gitxsan | Tsimshianic |
| Goaria | Indo-European |
| Goguryeo | Puyŏ |
| Gondi | Dravidian |
| Gora or Gorani | Indo-European |
| Goral | Indo-European |
| Gorani or Hawrami | Indo-European |
| Gothic | Indo-European |
| Greenlandic or Kalaallisut | Eskaleut |
| Greenlandic Norse | Indo-European |
| Greek | Indo-European |
| Greek, Aeolic | Indo-European |
| Greek, Apulian or Griko | Indo-European |
| Greek, Ancient Macedonian | Indo-European |
| Greek, Arcadocypriot | Indo-European |
| Greek, Attic | Indo-European |
| Greek, Byzantine or Medieval Greek | Indo-European |
| Greek, Calabrian | Indo-European |
| Greek, Cappadocian | Indo-European |
| Greek, Cypriot | Indo-European |
| Greek, Doric or West Greek | Indo-European |
| Greek, Homeric or Epic Greek | Indo-European |
| Greek, Ionic | Indo-European |
| Greek, Italiot | Indo-European |
| Greek, Jewish Koine | Indo-European |
| Greek, Koine | Indo-European |
| Greek, Mariupolitan or Crimean Greek | Indo-European |
| Greek, Mycenaean | Indo-European |
| Greek, Pamphylian | Indo-European |
| Greek, Pontic | Indo-European |
| Greek, Tsakonian | Indo-European |
| Greek, Yevanic | Indo-European |
| Greek Slavic | Indo-European |
| Guaraní | Tupian |
| Guaruyu | Tupian |
| Guazacapán | Xincan |
| Guinea-Bissau Creole | Portuguese-based creole |
| Gujarati | Indo-European |
| Gula Iro or Kulaal | Niger-Congo |
| Gullah or Sea Island Creole English | English-based creole |
| Gusii | Niger-Congo |
| Gwichʼin | Na-Dene |
|
| Hachijō or shima kotoba | Japonic |
| Hadramautic | Afroasiatic |
| Hadza or Hatsa | Language isolate |
| Haida or Masset | Language isolate or Na-Dene |
| Haitian Creole | French-based creole |
| Hän | Na-Dene |
| Hani | Sino-Tibetan |
| Harappan | Unclassified language |
| Harari | Afroasiatic |
| Harauti | Indo-European |
| Harsusi | Afroasiatic |
| Haryanvi | Indo-European |
| Harzani | Indo-European |
| Hasaitic | Afroasiatic |
| Hattic | Unclassified language |
| Hausa | Afroasiatic |
| Havasupai or Upland Yuman | Hokan |
| Hawaiian | Austronesian |
| Hawaiʻi Sign Language | Language isolate or small language family |
| Hazaragi | Indo-European |
| Hebrew | Afroasiatic |
| Hebrew, Ashkenazi | Afroasiatic |
| Hebrew, Biblical | Afroasiatic |
| Hebrew, Italian | Afroasiatic |
| Hebrew, Medieval | Afroasiatic |
| Hebrew, Mishnaic | Afroasiatic |
| Hebrew, Mizrahi | Afroasiatic |
| Hebrew, Modern | Afroasiatic |
| Hebrew, Samaritan | Afroasiatic |
| Hebrew, Sephardi | Afroasiatic |
| Hebrew, Tiberian | Afroasiatic |
| Hebrew, Yemenite | Afroasiatic |
| Herero | Niger-Congo |
| Hértevin | Afroasiatic |
| Hiligaynon | Bisayan |
| Himyaritic | Afroasiatic |
| Hindi | Indo-European |
| Hindustani | Indo-European) |
| Hinukh | Northeast Caucasian |
| Hiri Motu | Motu-based pidgin |
| Hismaic | Afroasiatic |
| Hittite | Indo-European |
| Hixkaryana | Cariban |
| Hmong | Hmong–Mien |
| Hmu | Hmong-Mien |
| Ho | Austroasiatic |
| Hobyót | Afroasiatic |
| Hokkien | Sino-Tibetan |
| Hopi | Uto-Aztecan |
| Hoti | Austronesian |
| Huastec or Teenek | Mayan |
| Huave | Language isolate |
| Huiliche | Araucanian |
| Hulaulá | Afroasiatic |
| Hungarian | Uralic |
| Hunnic | Unclassified language |
| Hutterisch or Tirolean | Indo-European |
| Hwa miao | Hmongic |
|
| Ibibio | Cross River |
| Iban | Austronesian |
| Ibanag | Austronesian |
| Icelandic | Indo-European |
| Ifè | Yoruboid |
| Igbo or Ibo or Biafra | Igboid |
| Ikalanga or Kalanga | Niger-Congo |
| Ili Turki | Turkic |
| Illyrian | Indo-European |
| Ilokano or Ilocano | Austronesian |
| Inabaknon Language | Austronesian |
| Indonesian | Austronesian |
| Indo-Portuguese Creole of Bombay | Portuguese-based creole language |
| Ingrian or Izhorian | Uralic |
| Ingush | Northeast Caucasian |
| Inuktitut | Eskimo–Aleut |
| Inupiaq | Eskimo–Aleut |
| Inuvialuktun | Eskimo–Aleut |
| Iraqw | Afroasiatic |
| Irish or Irish Gaelic | Indo-European |
| Irish Sign Language | Francosign |
| Irula | Dravidian |
| Isan or Northeastern Thai | Kra–Dai |
| Ishkashimi or Ishkashmi | Indo-European |
| Israeli Sign Language | DGSic |
| Istriot | Indo-European |
| Istro-Romanian | Indo-European |
| Italian | Indo-European |
|
| Jacaltek, Jakalteko or Popti' | Mayan |
| Jalaa | Unclassified language, possibly Niger–Congo |
| Japanese | Japonic |
| Japhug | Sino-Tibetan |
| Jaqaru | Aymaran |
| Jarai | Austronesian |
| Javanese | Austronesian |
| Jeju | Koreanic |
| Jemez or Towa | Tanoan |
| Jewish Babylonian Aramaic | Aramaic |
| Jewish Neo-Aramaic dialect of Zakho | Afroasiatic |
| Jibbali or Shehri | Afroasiatic |
| Jicarilla | Na-Dene |
| Juang | Austroasiatic |
| Judeo-Georgian | South Caucasian |
| Jumaytepeque | Xincan |
| Jurchen | Tungusic |
|
| Kaaps | Indo-European |
| Kabardian | Northwest Caucasian |
| Kabiye | Niger-Congo |
| Kabyle | Afroasiatic |
| Kachin or Jingpo | Sino-Tibetan |
| Kaingáng | Jê |
| Kajkavian | Indo-European |
| Kalami or Gawri or Dirwali | Indo-European |
| Kalahsa-mun | Indo-European |
| Kalašma | Indo-European |
| Kalmyk | Mongolic |
| Kalto or Nahali | Indo-European |
| Kamassian | Uralic |
| Kamchadal, Eastern | Khukotko-Kamchatkan |
| Kamchadal, Southern | Khukotko-Kamchatkan |
| Kamchadal, Western or Itelmen | Chukotko-Kamchatkan |
| Kamtapuri or Rangpuri or Rajbongshi | Indo-European |
| Kankanaey | Austronesian |
| Kannada | Dravidian |
| Kanuri | Saharan |
| Kaonde or Chikaonde | Niger-Congo |
| Kapampangan | Austronesian |
| Karachay–Balkar | Turkic |
| Karagas | Turkic |
| Karaim | Turkic |
| Karakalpak | Turkic |
| Karelian | Uralic |
| Karen | Sino-Tibetan |
| Kashmiri | Indo-European |
| Kashubian | Indo-European |
| Kasiguranin or Casiguran | Austronesian |
| Kawésqar or Alacaluf | Language isolate |
| Kazakh | Turkic |
| Kerek | Chukotko-Kamchatkan |
| Keres or Keresan | Language isolate or small language family |
| Ket | Yeniseian |
| Khakas | Turkic |
| Khalaj | Turkic |
| Kham or Sheshi | Sino-Tibetan |
| Khandeshi | Indo-European |
| Khanty or Ostyak | Uralic |
| Khasi | Austroasiatic |
| Khitan | Mongolic |
| Khmer | Austroasiatic |
| Khmu | Austroasiatic |
| Khowar | Indo-European |
| Kimatuumbi | Niger-Congo |
| Kinaray-a or Hiraya | Austronesian |
| Kinyarwanda | Niger-Congo |
| Kirombo | Niger-Congo |
| Kirundi | Niger-Congo |
| Kivunjo | Niger-Congo |
| Klallam or Clallam | Salishan |
| Koasati or Coushatta | Muskogean |
| Knaanic | Indo-European |
| Kodava or Kodagu or Coorgi | Dravidian |
| Kohistani or Khili | Indo-European |
| Kolami | Dravidian |
| Komi or Komi-Zyrian | Uralic |
| Konkani | Indo-European |
| Kongo or Kikongo | Niger-Congo |
| Koraga | Dravidian |
| Korandje | Nilo-Saharan |
| Korean | Koreanic |
| Korku | Austroasiatic |
| Korowai | Trans–New Guinea |
| Korwa | Austroasiatic |
| Koryak | Chukotko-Kamchatkan |
| Kosraean | Austronesian |
| Kota | Dravidian |
| Koyra Chiini or Western Songhay | Nilo-Saharan |
| Koy Sanjaq Christian Neo-Aramaic | Afroasiatic |
| Koya | Dravidian |
| Krymchak or Judeo-Crimean Tatar | Turkic |
| Kujarge | Unclassified language, perhaps Afroasiatic |
| Kui | Dravidian |
| Kukkuzi | Uralic |
| Kumauni | Indo-European |
| Kumeyaay or Kumiai | Yuma-Cochimí (Hokan?) |
| Kumyk | Turkic |
| Kumzari | Indo-European |
| !Kung | Kxʼa |
| Kurdish | Indo-European |
| Kurdish, Abduyi Indo-European |
| Kurdish, Central or Sorani | Indo-European |
| Kurdish, Laki | Indo-European |
| Kurdish, Northern or Kurmanji | Indo-European |
| Kurdish, Southern | Indo-European |
| Kurukh or Kurux | Dravidian |
| Kusunda | Language isolate |
| Kutenai or Kootenay or Ktunaxa | Language isolate |
| Kuy | Austroasiatic |
| Kven | Uralic |
| Kwak'wala | Wakashan |
| Kwanyama or Ovambo | Niger-Congo |
| Kxoe | Khoe |
| Kyrgyz or Kirghiz | Turkic |
|
| Laal | Unclassified language |
| Lacandon | Mayan |
| Lach | Indo-European |
| Ladakhi | Sino-Tibetan |
| Ladin | Indo-European |
| Ladino or Judeo-Spanish | Indo-European |
| Lak | Northeast Caucasian |
| Laki | Indo-European |
| Lakota or Lakhota or Teton | Siouan |
| Lambadi or Lamani or Banjari | Indo-European |
| Lanuvian | Indo-European |
| Lao or Laotian | Kra–Dai |
| Larestani | Indo-European |
| Latin | Indo-European |
| Latgalian | Indo-European |
| Latvian | Indo-European |
| Laz or Lazuri | South Caucasian |
| Lemko | Indo-European |
| Lenca, Honduran | Lencan |
| Lenca, Salvadoran | Lencan |
| Leonese | Indo-European |
| Lezgi or Agul | Northeast Caucasian |
| Ligbi or Ligby | Niger-Congo |
| Limburgish | Indo-European |
| Lingala | Niger-Congo |
| Lipan | Na-Dene |
| Lisan al-Dawat | Indo-European |
| Lishanid Noshan or Lishana Didan | Afroasiatic |
| Lithuanian | Indo-European |
| Livonian or Liv | Uralic |
| Livvi-Karelian, Olonets Karelian, or Livvi | Uralic |
| Lobala or Bala | Niger-Congo |
| Lomavren | Lom and Armenian-based mixed language |
| Lombard | Indo-European |
| Lotha | Sino-Tibetan |
| Low Alemannic German | Indo-European |
| Low German | Indo-European |
| Lower Sorbian | Indo-European |
| Lozi or Silozi | Niger-Congo |
| Ludic or Ludian | Uralic |
| Lunda or Chilunda | Niger-Congo |
| Luri | Indo-European |
| Lushootseed | Salishan |
| Lusoga or Soga | Niger-Congo |
| Luvale | Niger-Congo |
| Luwati | Indo-European |
| Luxembourgish | Indo-European |
|
| Macedonian | Indo-European |
| Machiguenga | Arawakan |
| Madí or Jamamadí or Kapaná | Arauan |
| Madurese | Austronesian |
| Magadhi | Indo-European |
| Marcho-Magdeburgian | Indo-European |
| Matagi | Japanese-based cant |
| Maguindanao | Austronesian |
| Maithili | Indo-European |
| Makasar | Austronesian |
| Makhuwa or Makua | Niger-Congo |
| Makhuwa-Meetto | Niger-Congo |
| Malagasy | Austronesian |
| Malay | Austronesian |
| Malay, Brunei | Austronesian |
| Malayalam | Dravidian |
| Malaysian Sign Language | Francosign |
| Maltese or Maltese Arabic | Afroasiatic |
| Malto or Sauria Paharia | Dravidian |
| Malvi, Malavi, or Ujjaini | Indo-European |
| Mam | Mayan |
| Manchu | Tungusic |
| Mandaic | Afroasiatic |
| Mandinka | Niger-Congo |
| Mansi or Vogul | Uralic |
| Manx | Indo-European |
| Manyika | Niger-Congo |
| Māori | Austronesian |
| Mapudungun or Mapuche | Araucanian |
| Maranao | Austronesian |
| Marathi | Indo-European |
| Mari or Cheremis | Uralic |
| Maria | Dravidian |
| Marquesan | Austronesian |
| Marshallese or Ebon | Austronesian |
| Martha's Vineyard Sign Language | Language isolate |
| Masaba | Niger-Congo |
| Masbatenyo or Minasbate | Austronesian |
| Masurian | Indo-European |
| Median | Indo-European |
| Meitei or Manipuri or Meithei | Sino-Tibetan |
| Mauritian Creole or Morisyen | French-based creole |
| Mayan Sign Language | Language isolate or small language family |
| Mayo | Uto-Aztecan |
| Mazandarani or Tabari | Indo-European |
| Mazahua | Oto-Manguean |
| Mazatec | Oto-Manguean |
| Meänkieli or Tornedalian Finnish | Uralic |
| Megleno-Romanian | Indo-European |
| Megrelian or Mingrelian | South Caucasian |
| Mehri or Mahri | Afroasiatic |
| Menominee | Algic |
| Mentawai | Austronesian |
| Meroitic | Unclassified language, maybe Nilo-Saharan or Language isolate |
| Meru or Kimeru | Niger-Congo |
| Mescalero | Na-Dene |
| Messapic | Indo-European |
| Michif | Métis French and Plains Cree-based mixed language |
| Mikasuki or Miccosukee | Muskogean |
| Mi'kmaq or Micmac | Algic |
| Minaean | Afroasiatic |
| Minangkabau | Austronesian |
| Mirandese | Indo-European |
| Miskito or Miskitu | Misumalpan |
| Mnong or M'Nong | Austroasiatic |
| Mobilian Jargon | Choctaw and French-based pidgin |
| Moghol | Mongolic |
| Mohawk | Iroquoian |
| Moksha | Uralic |
| Molengue | Niger-Congo |
| Mon | Austroasiatic |
| Middle Mongol | Mongolic |
| Mongolian | Mongolic |
| Mongolian, Classical | Mongolic |
| Mono | Niger-Congo |
| Mono | Uto-Aztecan |
| Mono | Austronesian |
| Montagnais or Innu | Algic |
| Montenegrin | Indo-European |
| Mopan | Mayan |
| Motu | Papuan Tip |
| Moxo | Arawakan |
| Muher | Afroasiatic |
| Mundari | Austroasiatic |
| Mundurukú | Tupian |
| Munji | Indo-European |
| Muong | Austroasiatic |
| Muria | Dravidian |
| Muscogee or Creek | Muskogean |
|
| Nafaanra | Niger-Congo |
| Nagarchal | Dravidian |
| Nahuatl | Uto-Aztecan |
| Nama or Khoekhoe | Khoe |
| Nanai | Tungusic |
| Nauruan | Austronesian |
| Navajo or Navaho | Na-Dene |
| Ndau or Southeast Shona | Niger-Congo |
| Ndonga | Niger-Congo |
| Neapolitan | Indo-European |
| Negidal | Tungusic |
| Nenets or Yurak | Samoyedic |
| Nepal Bhasa or Newari | Newaric |
| Nepali | Indo-European |
| New Zealand Sign Language | BANZSL |
| Nihali or Nahali | Language isolate |
| Nisga'a | Tsimshianic |
| Nganasan or Tavgi | Samoyedic |
| Ngumba | Niger-Congo |
| Nheengatu or Geral or Modern Tupí | Tupian |
| Nias | Northwest Sumatra–Barrier Islands |
| Nicaraguan Sign Language | Language isolate |
| Niellim | Niger-Congo |
| Nigerian Pidgin | English-based pidgin |
| Nisenan | Maiduan |
| Niuean or Niue | Austronesian |
| Nivkh or Gilyak | Language isolate |
| Nogai | Turkic |
| Norfuk or Norfolk | cant, English-Tahitian based |
| Noric | Indo-European |
| Norman or Norman-French | Indo-European |
| Norn | Indo-European |
| Northern Ndebele | Niger-Congo |
| Northern Paiute | Uto-Aztecan |
| Northern Sotho or Sepedi | Niger-Congo |
| Northern Straits Salish | Salishan |
| Norwegian (Bokmål, Nynorsk, Riksmål) | Indo-European |
| Northeast Malakula | Central Vanuatu |
| Nǀu | Tuu |
| Nuer | Nilotic |
| Nuxálk or Bella Coola | Salishan |
| Nyabwa | Niger-Congo |
| Nyah Kur | Austroasiatic |
| Nyangumarta | Pama–Nyungan |
| Nyoro | Niger-Congo |
|
| Occitan or Provençal | Indo-European |
| Odia | Indo-European |
| Ojibwe, Ojibwa, or Chippewa | Algic |
| Okinawan | Japonic |
| Oko-Juwoi | Great Andamanese |
| Old Leonese or Medieval Leonese | Indo-European |
| Old Prussian | Indo-European |
| Omagua | Tupian |
| Omok | Yukaghir |
| Ongota | Unclassified language |
| O'odham | Uto-Aztecan |
| Ormuri | Indo-European |
| Oroch | Tungusic |
| Orok | Tungusic |
| Oromo or Afaan Oromoo | Afroasiatic |
| Ossetian or Ossetic | Indo-European |
| Ossetian, Digor | Indo-European |
| Ossetian, Jassic or Jasz | Indo-European |
| Ossetian, Iron | Indo-European |
| Övdalian | Indo-European |
|
| Páez or Nasa Yuwe | Language isolate |
| Palauan | Austronesian |
| Pame | Oto-Manguean |
| Pangasinan | Austronesian |
| Papiamento or Papiamentu | Portuguese-based creole |
| Parachi | Indo-European |
| Parthian | Indo-European |
| Parya | Indo-European |
| Pashto, Pushto, or Pashtu | Indo-European |
| Paya or Pech | Chibchan |
| Peninsular Japonic | Japonic |
| Pennsylvania Dutch or Pennsylvania German | Indo-European |
| Persian or farsi, as it is referred to in the Persian language | Indo-European |
| Persian Kowli | Indo-European |
| Phalura | Indo-European |
| Phoenician | Afroasiatic |
| Phuthi | Niger-Congo |
| Picard | Indo-European |
| Pipil or Nawat | Uto-Aztecan |
| Pirahã | Mura |
| Plautdietsch or Mennonite Low German | Indo-European |
| Podlachian or Podlashuk | Indo-European |
| Polabian | Indo-European |
| Polish | Indo-European |
| Polish Sign Language | DGSic |
| Pomak | Indo-European |
| Pomeranian | Indo-European |
| Popoloca | Oto-Manguean |
| Portuguese | Indo-European |
| Pothohari or Pahari-Potwari | Indo-European |
| Pradhan or Pardhan | Dravidian |
| Praenestinian | Indo-European |
| Pucikwar | Great Andamanese |
| Puelche | Language isolate or Chonan |
| Puma | Sino-Tibetan |
| Punic, Phoenicio-Punic, or Carthaginian | Afroasiatic |
| Punjabi, Panjabi, or Gurmukhi | Indo-European |
| Purépecha or Tarascan | Language isolate |
|
| Q'anjob'al | Mayan |
| Qashqai or Ghashghai | Turkic |
| Qatabanian | Afroasiatic |
| Q'eqchí | Mayan |
| Quebec Sign Language | Francosign |
| Quechua | Quechuan |
| Quelia | German and Russian-based mixed language |
|
| Rajasthani | Indo-European |
| Rani | Indo-European |
| Ratagnon, Datagnon, or Latagnun | Bisayan |
| Razi | Indo-European |
| Razihi | Afroasiatic |
| Resian | Indo-European |
| Réunion Creole or Bourbonnais | French-based creole |
| Rijāl Almaʿ | Afroasiatic |
| Romanian | Indo-European |
| Romansh | Indo-European |
| Romani | Indo-European |
| Romani, Balkan | Indo-European |
| Romani, Baltic | Indo-European |
| Romani, Bohemian | Indo-European |
| Romani, Carpathian | Indo-European |
| Romani, Early | Indo-European |
| Romani, English | English and British Romani-based mixed language |
| Romani, Erromintxela | Basque and Kalderash Romani-based mixed language |
| Romani, Finnish | Indo-European |
| Romani, Greek | Greek and Romani-based mixed language |
| Romani, Iberian or Caló | Iberian Romance and Romani-based mixed language |
| Romani, Kalderash | Indo-European |
| Romani, Laiuse | Estonian and Finnish Romani-based mixed language |
| Romani, Rumelian | Indo-European |
| Romani, Scandinavian | North Germanic and Romani-based mixed language |
| Romani, Scottish | Scots and British Romani-based mixed language |
| Romani, Serbian | Serbian and Romani-based mixed language |
| Romani, Sinte | Indo-European |
| Romani, Vlax | Indo-European |
| Romani, Welsh | Indo-European |
| Romani, Zargari | Indo-European |
| Romblomanon | Bisayan |
| Rotokas | East Papuan |
| Rotuman | Central Pacific |
| Rouran | Mongolic |
| Runyankole language or Nyankore | Niger-Congo |
| Russian | Indo-European |
| Russian, Alaskan | Indo-European |
| Russian, Odesan | Indo-European |
| Russian Sign Language | Francosign |
| Rusyn, Carpathian | Indo-European |
| Rusyn, Pannonian | Indo-European |
| Rutul | Northeast Caucasian |
| Ruthenian | Indo-European |
|
| Sabaic or Sabaean | Afroasiatic |
| Safaitic | Afroasiatic |
| Salar | Turkic |
| Samaritan Aramaic | Afroasiatic |
| Samoan | Austronesian |
| Sandawe | Language isolate |
| Sango | Ngbandi-based creole |
| Sanskrit | Indo-European, liturgical language |
| Santali | Austroasiatic |
| Sara Bakati' | Land Dayak |
| Saraiki, Seraiki, or Siraiki Southern Punjabi | Indo-European |
| Saramaccan | English-based creole |
| Sardinian | Indo-European |
| Sardinian, Campidanese | Indo-European |
| Sardinian, Logudorese | Indo-European |
| Sarikoli | Indo-European |
| Sart Kalmyk | Mongolic |
| Saurashtra or Sourashtra | Indo-European |
| Savi | Indo-European |
| Sawai | South Halmahera–West New Guinea |
| Scots | Indo-European |
| Scots, Shetlandic or Shaetlan | Indo-European |
| Scots, Ulster | Indo-European |
| Scottish Gaelic or Scots Gaelic or Gaidhlig or Gaelic | Indo-European |
| Selangor Sign Language | Francosign |
| Selkup or Ostyak Samoyed | Samoyedic |
| Semnani | Indo-European |
| Senaya | Afroasiatic |
| Serbian | Indo-European |
| Serbo-Croatian | Indo-European |
| Sesotho | Niger-Congo |
| Seto or Setu | Uralic |
| Seychellois Creole | French-based creole |
| Shabaki | Indo-European |
| Shan | Kra–Dai |
| Shelta | Irish and Irish English-based mixed language |
| Shimaore | Niger-Congo |
| Shina | Indo-European |
| Shipibo or Shipibo-Konibo | Panoan |
| Shona | Niger-Congo |
| Shor | Turkic |
| Shoshoni or Shoshone | Uto-Aztecan |
| Shtokavian | Indo-European |
| Shughni | Indo-European |
| Shumashti | Indo-European |
| Shuswap or Secwepemctsín | Salishan |
| Siberian Tatar | Turkic |
| Sicilian | Indo-European |
| Sidamo | Afroasiatic |
| Sierra Popoluca or Soteapanec | Mixe–Zoque |
| Sika | Flores–Lembata |
| Silesian | Indo-European |
| Silla or Old Korean | Koreanic |
| Silt'e or Selti or East Gurage | Afroasiatic |
| Sinacantán | Xincan |
| Sindhi | Indo-European |
| Sinhala | Indo-European |
| Sioux | Siouan |
| Sivandi | Indo-European |
| Sámi, Akkala | Uralic |
| Sámi, Inari | Uralic |
| Sámi, Kainuu | Uralic |
| Sámi, Kemi | Uralic |
| Sámi, Kildin | Uralic |
| Sámi, Lule | Uralic |
| Sámi, Northern | Uralic |
| Sámi, Pite | Uralic |
| Sámi, Skolt | Uralic |
| Sámi, Southern | Uralic |
| Sámi, Ter | Uralic |
| Sámi, Ume | Uralic |
| Sentinelese | Unclassified language |
| Slavey | Na-Dene |
| Slavomolisano | Indo-European |
| Slovak | Indo-European |
| Slovak, Eastern | Indo-European |
| Slovene or Slovenian | Indo-European |
| Slovene, Prekmurje | Indo-European |
| Slovincian | Indo-European |
| Soddo or Kistane | Afroasiatic |
| Somali | Afroasiatic |
| Sonjo or Temi | Niger-Congo |
| Sonsorolese or Sonsorol | Austronesian |
| Soqotri | Afroasiatic |
| Sora | Austroasiatic |
| Sorbian, Lower | Indo-European |
| Sorbian, Upper | Indo-European |
| Sourashtra | Indo-European |
| Southern Ndebele | Niger-Congo |
| South Estonian | Uralic |
| Spanish | Indo-European |
| Spanish, Amazonic | Indo-European |
| Spanish, Andalusian | Indo-European |
| Spanish, Canarian | Indo-European |
| Spanish, Caribbean | Indo-European |
| Spanish, Castilian | Indo-European |
| Spanish, Catalan | Indo-European |
| Spanish, Chilote | Indo-European |
| Spanish, Extremaduran or Castúo | Indo-European |
| Spanish, Galician or Castrapo | Indo-European |
| Spanish, Gibraltarian or Llanito | Indo-European |
| Spanish, Mexican | Indo-European |
| Spanish, Murcian | Indo-European |
| Spanish, Peninsular | Indo-European |
| Spanish, Sabine River, Adaeseño Spanish, or Zwolle-Ebarb Spanish | Indo-European |
| Spanish, Saharan or Western Saharan Spanish | Indo-European |
| Spanish, Standard | Indo-European |
| Sranan Tongo | English-based creole |
| St'at'imcets or Lillooet | Salishan |
| Sucite or Sìcìté Sénoufo | Niger-Congo |
| Suba | Niger-Congo |
| Sundanese | Austronesian |
| Supyire or Supyire Senoufo | Niger-Congo |
| Suret or Sureth | Afroasiatic |
| Surigaonon | Bisayan |
| Susu | Niger-Congo |
| Svan | South Caucasian |
| Swahili | Niger-Congo |
| Swati, Swazi, Siswati, or Seswati | Niger-Congo |
| Swedish | Indo-European |
| Swiss-German Sign Language | Unclassified language, possibly DGSic or Francosign |
| Syriac | Afroasiatic |
|
| Taa | Tuu |
| Tabasaran or Tabassaran | Northeast Caucasian |
| Tacana | Tacanan |
| Tachelhit | Afroasiatic |
| Tagalog | Austronesian |
| Tahitian | Austronesian |
| Tai Lue | Kra–Dai |
| Taíno | Arawakan |
| Taiwanese Sign Language | JSLic |
| Tajik | Indo-European |
| Takestani | Indo-European |
| Talysh | Indo-European |
| Tamil | Dravidian |
| Tanacross | Na-Dene |
| Tangut | Sino-Tibetan |
| Taos or Northern Tiwa | Tanoan |
| Tarahumara | Uto-Aztecan |
| Tarama | Japonic |
| Tarifit or Rifi or Riff Berber | Afroasiatic |
| Tat or Tati | Indo-European |
| Tatar | Turkic |
| Tausug | Bisayan |
| Taymanitic | Afroasiatic |
| Tehuelche or Aonikenk | Chon |
| Telugu | Dravidian |
| Tetum | Austronesian |
| Tepehua | Totonacan |
| Tepehuán or O'otham | Uto-Aztecan |
| Tewa | Tanoan |
| Thai | Kra–Dai |
| Thamudic | Afroasiatic |
| Tharu | Indo-European |
| Tibetan, Lhasa | Sino-Tibetan |
| Ticuna | Language isolate |
| Tigre or Xasa | Afroasiatic |
| Tigrinya | Afroasiatic |
| Timbisha or Panamint | Uto-Aztecan |
| Tiv | Tivoid |
| Tlingit | Na-Dene |
| Tobian | Austronesian |
| Toda | Dravidian |
| Tojolab'al | Mayan |
| Tok Pisin | English-based creole |
| Tokelauan | Austronesian |
| Tol or Jicaque | Jicaquean |
| Tonga | Niger-Congo |
| Tongan | Austronesian |
| Torlakian | Indo-European |
| Torwali or Turvali | Indo-European |
| Tregami | Indo-European |
| Trique or Triqui | Oto-Manguean |
| Tsat | Austronesian |
| Tsez or Dido | Northeast Caucasian |
| Tshiluba, Luba-Kasai, or Luba-Lulua | Niger-Congo |
| Tsimshian, Coast | Tsimshianic |
| Tsimshian, Southern | Tsimshianic |
| Tsonga | Niger-Congo |
| Tswana or Setswana | Niger-Congo |
| Tu or Monguor | Mongolic |
| Tuareg or Tamasheq | Afroasiatic |
| Tulu | Dravidian |
| Tumbuka | Niger-Congo |
| Tupiniquim | Tupian |
| Turkish | Turkic |
| Turkish, Cypriot | Turkic |
| Turkish, Karamanli | Turkic |
| Turkish, Ottoman | Turkic |
| Turkish, Tsalka | Turkic |
| Turkmen | Turkic |
| Turoyo | Afroasiatic |
| Tuvaluan | Austronesian |
| Tuvan Tuvin or Tyvan | Turkic |
| Tzeltal | Mayan |
| Tzotzil | Mayan |
|
| Udihe or Ude or Udege | Tungusic |
| Udmurt or Votyak | Uralic |
| Ugaritic | Afroasiatic |
| Ukrainian | Indo-European |
| Ulada | Austronesian |
| Ulch or Olcha | Tungusic |
| Unserdeutsch or Rabaul Creole German | German-based creole |
| Upper Sorbian | Indo-European |
| Urdu | Indo-European |
| Urum | Turkic |
| Ute | Uto-Aztecan |
| Uyghur or Uighur | Turkic |
| Uzbek | Turkic |
|
| Vafsi | Indo-European |
| Valencian | Indo-European |
| Valencian Sign Language | Catalan Sign |
| Vasi-vari or Prasuni | Indo-European |
| Vastese | Indo-European |
| Venda or Tshivenda | Niger-Congo |
| Venetian | Indo-European |
| Veps | Uralic |
| Vietnamese | Austroasiatic |
| Võro | Uralic |
| Votic or Votian | Uralic |
|
| Wa | Austroasiatic |
| Waddar | Dravidian |
| Wagiman | Language isolate |
| Waigali or Kalasha-Ala | Indo-European |
| Waima or Roro | Austronesian |
| Wakhi | Indo-European |
| Wallisian or East Uvean | Austronesian |
| Walloon | Indo-European |
| Waray or Binisaya | Austronesian |
| Washo | Language isolate |
| Welsh | Indo-European |
| Western Neo-Aramaic | Afroasiatic |
| West Polesian or Poleshuk | Indo-European |
| Wolane (Silt'e) | Afroasiatic |
| Wolof | Niger–Congo |
| Wymysorys | Indo-European |
|
| Xavante | Jê |
| Xhosa | Niger-Congo |
| Xibe or Sibo | Tungusic |
| Xipaya | Tupian |
|
| Yaaku | Afroasiatic |
| Yaeyama | Japonic |
| Yaghan or Yámana | Language isolate |
| Yaghnobi | Indo-European |
| Yakut | Turkic |
| Yankunytjatjara | Pama–Nyungan |
| Yanyuwa | Pama–Nyungan |
| Yapese | Austronesian |
| Yaqui | Uto-Aztecan |
| Yauma | Niger-Congo |
| Yavapai | Yuman |
| Yazdi | Indo-European |
| Yazgulyam or Yazgulami | Indo-European |
| Ye-Maek | Puyŏ? |
| Yeni | Niger–Congo |
| Yi language or Nuosu | [[Sino-Tibetan language|Sino-Tibetan] |
| Yine or Piro | Arawakan |
| Yiddish | Indo-European |
| Yidgha | Indo-European |
| Yugur, Eastern | Mongolic |
| Yugur, Western or Neo-Uygur | Turkic |
| Yokuts, Yokutsan, or Mariposa | Yokutsan |
| Yokuts, Buena Vista | Yokutsan |
| Yokuts, Delta | Yokutsan |
| Yokuts, Palewyami | Yokutsan |
| Yokuts, Tule–Kaweah | Yokutsan |
| Yokuts, Valley | Yokutsan |
| Yonaguni | Japonic |
| Yorùbá | Niger-Congo |
| Younuo | Hmongic |
| Yucatec Maya | Yucatecan |
| Yuchi | Language isolate |
| Yukaghir, Northern or Tundra Yukaghir | Yukaghir |
| Yukaghir, Southern or Forest Yukaghir | Yukaghir |
| Yukjin | Koreanic |
| Yupik | Eskimo–Aleut |
| Yupiltepeque | Xincan |
| Yurats | Samoyedic |
| Yurok | Algic |
|
| Záparo | Saparoan |
| Zapotec | Oto-Manguean |
| Zaza or Zazaki | Indo-European |
| Zeelandic | Indo-European |
| Zhuang | Kra–Dai |
| Zoque | Mixe–Zoquean |
| Zoroastrian Dari | Indo-European |
| Zulu | Niger-Congo |
| Zuñi or Zuni | Language isolate |
| Zway or Zay | Afroasiatic |
