| Language | Group |
|---|
|
|
| ʼAuhelawa language |
Austronesian |
| Aari | Afroasiatic |
| AB language | Indo-European |
| Abau | Sepik |
| Abawiri | Lakes Plain |
| Abaza | Northwest Caucasian |
| Abelam | Sepik |
| Abellen | Austronesian |
| Abenaki | Algic |
| Abkhaz or Abkhazian | Northwest Caucasian |
| Abu' | Torricelli |
| Abujmaria or Madiya or Maria | Dravidian |
| Acehnese | Austronesian |
| Acholi | Nilo-Saharan |
| Achumawi | Palaihnihan |
| Adamorobe Sign Language | Language isolate |
| Adele | Niger–Congo |
| Adonara | Austronesian |
| Adyghe or West Circassian | Northwest Caucasian |
| Aekyom | Trans–New Guinea |
| Afar | Afroasiatic |
| African Romance | Indo-European |
| Afrikaans | Indo-European |
| Afro-Seminole Creole | English-based creole |
| Afshar | Turkic |
| Agöb | Pahoturi |
| Aguaruna | Chicham |
| Ahirwati | Indo-European |
| Ahom | Kra–Dai |
| Ai-Cham | Kra–Dai |
| Aimaq or Barbari | Indo-European |
| Aimele | Trans–New Guinea |
| Ainbai | Border |
| Ainu, Hokkaido | Ainu |
| Ainu, Kuril | Ainu |
| Ainu, Sakhalin | Ainu |
| Ait Seghrouchen Berber | Afroasiatic |
| 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 | Austronesian |
| Akoye | Trans–New Guinea |
| Akpes | Niger–Congo |
| Alabama | Muskogean |
| Alanic | Indo-European |
| Alawa | Arnhem |
| Albanian | Indo-European |
| Albanian, Arbëresh | Indo-European |
| Albanian, Arvanitika or Arvanitic | Indo-European |
| Albanian, Gheg | Indo-European |
| Albanian, Tosk | Indo-European |
| Alchuka | Tungusic |
| Aleut | Eskaleut |
| Aleut, Mednyj | Russian and Aleut-based mixed language |
| Algonquin | Algic |
| Allentiac | Huarpean |
| Alorese | Austronesian |
| Alsatian | Indo-European |
| Altay | Turkic |
| Alur | Nilo-Saharan |
| Alyutor or Alutor | Chukotko-Kamchatkan |
| Amal | Sepik |
| Amanab | Border |
| Ambala | Austronesian |
| Ambelau | Austronesian |
| Amdang | Nilo-Saharan |
| Amdo | Sino-Tibetan |
| American Sign Language | Francosign |
| Amharic | Afroasiatic |
| Amis | Austronesian |
| ǂ'Amkoe | Kx'a |
| Ammonite | Afroasiatic |
| Amorite | Afroasiatic |
| Amto | Arai–Samaia |
| Amuzgo | Oto-Manguean |
| Anamagi | Torricelli |
| Ancient Belgian | Indo-European |
| Andio | Austronesian |
| Andoque | Andoque–Urequena |
| Anewan | Pama–Nyungan |
| Angaataha | Trans–New Guinea |
| Angal | Trans–New Guinea |
| Angami Naga Sign Language | Language isolate |
| Angika | Indo-European |
| Angoram | Ramu–Lower Sepik |
| Ankave | Trans–New Guinea |
| Antiguan and Barbudan |
English-based creole |
| Antsi | Austronesian |
| Anyin | Niger–Congo |
| Ao | Sino-Tibetan |
| Apalachee | Muskogean |
| Apalaí | Cariban |
| Aquitanian | Basque |
| Arabana | Pama–Nyungan |
| Arabela | Zaparoan |
| 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 |
| Arapaso | Tucanoan |
| Arawak | Arawakan |
| Are | Austronesian |
| ꞋAreꞌare | Austronesian |
| Argentine Sign Language | Unclassified language |
| 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 |
| Armeno-Kipchak | Turkic |
| Arrernte, Lower | Pama–Nyungan |
| Arrernte, Upper | Pama–Nyungan |
| Aruek | Torricelli |
| Asa | Afroasiatic |
| Asaro'o | Trans–New Guinea |
| Asháninka | Arawakan |
| Ashkun | Indo-European |
| Ashokan Prakrit | Indo-European |
| Asi | Austronesian |
| Askopan | North Bougainville |
| Asmat, Casuarina Coast | Trans–New Guinea |
| Asmat, Central | Trans–New Guinea |
| Asmat, North | Trans–New Guinea |
| Assamese | Indo-European |
| Asturian | Indo-European |
| Asturleonese | Indo-European |
| Atadei, East | Austronesian |
| Atayal | Austronesian |
| Ateso or Teso | Nilo-Saharan |
| Ati | Austronesian |
| Atong Language | Sino-Tibetan |
| Atorada | Arawakan |
| Atta | Austronesian |
| Auslan | BANZSL |
| Avar | Northeast Caucasian |
| Avestan | Indo-European |
| Awadhi | Indo-European |
| Awara | Trans–New Guinea |
| Awera | Lakes Plain |
| Awjila | Afroasiatic |
| Aymara | Aymaran |
| Äynu | Turkic |
| Ayoreo | Zamucoan |
| Azerbaijani or Azeri | Turkic |
|
|
| Babar, North | Austronesian |
| Babar, Southeast | Austronesian |
| Babuza | Austronesian |
| Bactrian | Indo-European |
| Bada | Austronesian |
| Badaga | Dravidian |
| Badeshi | Indo-European |
| Badjiri | Pama–Nyungan |
| Badong Yao | Sino-Tibetan |
| Baekje | Koreanic |
| Bagri | Indo-European |
| Bagusa | Foja Range |
| Bahnar | Austroasiatic |
| Bahonsuai | Austronesian |
| Bai | Sino-Tibetan |
| Bai | Niger–Congo |
| Bailang | Sino-Tibetan |
| Bakor | Niger–Congo |
| Bala | Tungusic |
| Balaesang | Austronesian |
| Balanta | Niger–Congo |
| Balantak | Austronesian |
| Bali | Niger–Congo languages |
| Balinese | Austronesian |
| Balkan Gagauz or Rumelian Turkish | Turkic |
| Balochi | Indo-European |
| Balti | Sino-Tibetan |
| Bamako Sign Language | Language isolate |
| Bambara or Bamanankan | Niger–Congo |
| Banda | Austronesian |
| Banggai | Austronesian |
| Bangubangu | Niger–Congo |
| Banjar | Austronesian |
| Banyumasan | Austronesian |
| Barakai | Austronesian |
| Barbareño | Chumashan |
| Bardi | Nyulnyulan |
| Bari | Nilo-Saharan |
| Barranquenho or Barranquenhu | Alentejan Portuguese, Extremaduran Spanish, and Andalusian Spanish-based mixed language |
| Bartangi | Indo-European |
| Basaa | Niger–Congo |
| Basay | Austronesian |
| Ba–Shu | Sino-Tibetan |
| Bashkardi | Indo-European |
| Bashkir | Turkic |
| Basque or Euskara/Euskera | Language isolate |
| Batak Karo | Austronesian |
| Batak Toba | Austronesian |
| Bats | Northeast Caucasian |
| Batui | Austronesian |
| Batuley | Austronesian |
| Bauzi | East Geelvink Bay |
| Bavarian | Indo-European |
| Bawean and Bawean Creole | Austronesian |
| Bedamuni | Trans–New Guinea |
| Beeke | Niger–Congo |
| Behoa | Austronesian |
| Beja | Afroasiatic |
| Belarusian | Indo-European |
| Belhare | Sino-Tibetan |
| Beli | Torricelli |
| Bemba | Niger–Congo |
| Bembe | Niger–Congo |
| Bena | Niger–Congo |
| Bengali | Indo-European |
| Benggoi | Austronesian |
| Berber | Afroasiatic |
| Berbey Sign Language | Language isolate |
| Berta | Nilo-Saharan |
| Berti | Nilo-Saharan |
| Betawi | Austronesian |
| Bete | Niger–Congo |
| Bété | Niger–Congo |
| Beurla Reagaird | Indo-European |
| Bezhta | Northeast Caucasian |
| Bhele | Niger–Congo |
| Bhili | Indo-European |
| Bhojpuri | Indo-European |
| Bhutanese Sign Language | Unclassified language |
| Biao | Kra–Dai |
| Bidhawal | Pama–Nyungan |
| Bigambal | Pama–Nyungan |
| Bijago | Niger–Congo |
| Bijil Neo-Aramaic | Afroasiatic |
| Bikol | Austronesian |
| Bikya or Furu | Niger–Congo |
| Bila | Niger–Congo |
| Bile | Niger–Congo |
| Bilua | Central Solomon |
| Bima | Austronesian |
| Bindal | Pama–Nyunga |
| Bininj Kunwok | Arnhem |
| Bira | Niger–Congo |
| Birgid | Nilo-Saharan |
| Biseni | Niger–Congo |
| Bislama | English-based creole |
| Bissa | Niger–Congo |
| Blaan | Austronesian |
| Blackfoot | Algic |
| Bobongko | Austronesian |
| Bobot | Austronesian |
| Bodo | Niger–Congo |
| Bogaya | Trans–New Guinea |
| Boguru | Niger–Congo |
| Boholano | Austronesian |
| Bohtan Neo-Aramaic | Afroasiatic |
| Boiken | Sepik |
| Bolano | Austronesian |
| Bolinao | Austronesian |
| Bonan or Paoan | Mongolic |
| Bondei | Niger–Congo |
| Bonerate | Austronesian |
| Bonkiman | Trans–New Guinea |
| Bora | Boran |
| Boro | Sino-Tibetan |
| Borong | Trans–New Guinea |
| Bororo | Bororoan |
| Boruca | Chibchan |
| Bosnian | Indo-European |
| Botolan | Austronesian |
| Bouakako Sign Language | Language isolate |
| Bo-Ung | Trans–New Guinea |
| Brahui | Dravidian |
| Brazilian Sign Language | Language isolate |
| Breton | Indo-European |
| Bribri | Chibchan |
| British Sign Language | BANZSL |
| Bru | Austroasiatic |
| Bua | Niger–Congo |
| Budu | Niger–Congo |
| Buginese | Austronesian |
| Buglere | Chibchan |
| Bukiyip | Torricelli |
| Bukusu | Niger–Congo |
| Bukwen | Niger–Congo |
| Bulgar | Turkic |
| Bulgarian | Indo-European |
| Bulgarian, Banat | Indo-European |
| Bulgebi | Trans–New Guinea |
| Bumbita | Torricelli |
| Bung | Niger–Congo |
| Bungandidj | Pama–Nyungan |
| Bungku | Austronesian |
| Bungu | Niger–Congo |
| Bunjevac | Indo-European |
| Bunun | Austronesian |
| Burmese | Sino-Tibetan |
| Buru | Austronesian |
| Buru–Angwe | Niger–Congo |
| Burushaski | Language isolate |
| Buruwai | Trans–New Guinea |
| Buryat | Mongolic |
| Busoa | Austronesian |
| Butonese | Austronesian |
| Buyeo | Koreanic |
| Buyu | Niger–Congo |
|
|
| 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 Amarna Canaanite-based mixed language |
| Cao Miao | Kra–Dai |
| Cape Verdean Creole or Kabuverdianu | Portuguese-based creole |
| Carabayo | Ticuna–Yuri |
| Carib | Cariban |
| Carrier or Dakelh | Na-Dene |
| Catacao | Catacaoan |
| Catalan | Indo-European |
| Catalan Sign Language | Catalan Sign |
| Caucasian Sign Language | Language isolate |
| Cavineña | Tacanan |
| Cayuga | Iroquoian |
| Cebuano | Austronesian |
| Celtiberian | Indo-European |
| Central Italian | Indo-European |
| Central Taurus Sign Language | Language isolate |
| Chabacano or Chavacano | Spanish-based creole |
| Chadong | Kra–Dai |
| Chaga or Kichagga | Niger–Congo |
| Chaga, Central | Niger–Congo |
| Chagatai | Turkic |
| Chaga, West | Niger–Congo |
| Chaharmahali Turkic | Turkic |
| Chakavian | Indo-European |
| Chakma | Indo-European |
| Cham | Austronesian |
| Chamacoco | Zamucoan |
| Chambir | Ramu–Lower Sepik |
| Chamorro or Chamoru | Austronesian |
| Chaná | Charruan |
| Chaouia or Tachawit | Afroasiatic |
| Chatino | Oto-Manguean |
| Chayahuita | Cahuapanan |
| Chechen | Northeast Caucasian |
| Chelkan | Turkic |
| Chenchu | Dravidian |
| Chenoua | Afroasiatic |
| Cherokee | Iroquoian |
| Cheyenne | Algic |
| Chhattisgarhi | Indo-European |
| Chichimeca Jonaz | Oto-Manguean |
| Chickasaw | Muskogean |
| Chiga or Kiga | Niger–Congo |
| Chilcotin or Tsilhqot'in | Na-Dene |
| Chilean Sign Language | Unclassified language |
| Chinantec | Oto-Manguean |
| Chinese | Sino-Tibetan |
| Chinese, Standard | Sino-Tibetan |
| Chinese Kyakala | Tungusic |
| Chinese Sign Language | Chinese Sign |
| Chintang or Chhintang | 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 |
| Cholón | Hibito–Cholon |
| Chontal de Tabasco | Mayan |
| Chonyi | Niger–Congo |
| Chorasmian or Khwarezmian | Indo-European |
| Christian Palestinian Aramaic | Afroasiatic |
| Chuave | Trans–New Guinea |
| Chuj | Mayan |
| Chukchi or Chukot | Chukotko-Kamchatkan |
| Chulym | Turkic |
| Chulym, Lower | Turkic |
| Chung | Niger–Congo |
| Church Slavonic | Indo-European |
| Chuukese or Trukese | Austronesian |
| Chuvan | Yukaghir |
| Chuvash | Turkic |
| Citak | Trans–New Guinea |
| Cochin Portuguese Creole or Vypin Indo-Portuguese | Portuguese-based creole |
| Cocoma or Cocama | Tupian |
| Coconucan | Barbacoan |
| Cocopah | Yuman–Cochimí |
| Coeur d’Alene | Salishan |
| Comanche | Uto-Aztecan |
| Comecrudo | Pakawan |
| 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 | Turkic |
| Croatian | Indo-European |
| Croatian, Burgenland | Indo-European |
| Cuban Sign Language | Unclassified language |
| Cubeo | Tucanoan |
| Cuicatec | Oto-Manguean |
| Cuman | Turkic |
| Cumbric | Indo-European |
| Cuyonon | Austronesian |
| Czech | Indo-European |
|
|
| Daats'iin | Nilo-Saharan |
| Dadanitic | Afroasiatic |
| Dagaare | Niger–Congo |
| Dagbani | Niger–Congo |
| Dahlik | Afroasiatic |
| Dai | Austronesian |
| Daka | Niger–Congo |
| Dalecarlian | Indo-European |
| Dalmatian | Indo-European |
| Damal | Trans–New Guinea |
| Dameli | Indo-European |
| Dampelas | Austronesian |
| Danish | Indo-European |
| Danish, East | Indo-European |
| Danzhou | Sino–Tibetan |
| Dao | Sino-Tibetan |
| Dargin | Northeast Caucasian |
| Dari or Dari Persian | Indo-European |
| Daur or Dagur | Mongolic |
| Dawera-Daweloor | Austronesian |
| Daylami | Indo-European |
| Dazaga | Nilo-Saharan |
| Dedua | Trans–New Guinea |
| Defaka | Niger–Congo |
| Degenan | Trans–New Guinea |
| Dem | Trans–New Guinea |
| Dena'ina or Tanaina | Na-Dene |
| Dendi | Nilo-Saharan |
| Denya | Niger–Congo |
| Dera | Senagi |
| Dhanggati | Pama–Nyungan |
| Dhatki | Indo-European |
| Dhauwurd Wurrung | Pama–Nyungan |
| Dhivehi or Maldivian | Indo-European |
| Dholuo | Nilo-Saharan |
| Dhundhari | Indo-European |
| Dhuwal | Pama–Nyungan |
| Dibiyaso | Trans–New Guinea |
| Dicamay Agta | Austronesian |
| Dida | Niger–Congo |
| Digo | Niger–Congo |
| Dinka | Nilo-Saharan |
| Dioula or Jula | Niger–Congo |
| Diyari | Pama–Nyungan |
| Djabwurrung | Pama–Nyungan |
| Dobel | Austronesian |
| Doe | Niger–Congo |
| Dogri | Indo-European |
| Dogrib or Tli Cho | Na-Dene |
| Dolgan | Turkic |
| Dom | Trans–New Guinea |
| Domaaki or Dumaki | Indo-European |
| Domung | Trans–New Guinea |
| Dondo | Austronesian |
| Dong | Niger–Congo |
| Dongxiang or Santa | Mongolic |
| Douentza Sign Language | Language isolate |
| Duala | Niger–Congo |
| Dukhan | Turkic |
| Dulbu | Niger–Congo |
| Duna | Trans–New Guinea |
| Dura | Sino-Tibetan |
| Duruwa or Parji | Dravidian |
| Dutch | Indo-European |
| Dyirbal | Pama–Nyungan |
| Dzhidi or Judeo-Persian | Indo-European |
| Dzongkha | Sino-Tibetan |
| Dzubukuá | Kariri |
|
|
| Eastern Middle Atlas Berber | Afroasiatic |
| Eblaite | Afroasiatic |
| Edolo | Trans–New Guinea |
| Edomite | Afroasiatic |
| Egyptian | Afroasiatic |
| Egyptian Sign Language | Arab Sign |
| Eitiep | Torricelli |
| Ekari | Trans–New Guinea |
| Ekoti | Niger–Congo |
| Elamite | Afroasiatic |
| Emem | Pauwasi |
| Emplawas | Austronesian |
| Enawené-Nawé | Arawakan |
| Ende | Austronesian |
| Enets or Yenisey Samoyed | Uralic |
| Enga | Trans–New Guinea |
| English | Indo-European |
| English, Euro | Indo-European |
| English, International | Indo-European |
| English, Northern | Indo-European |
| English, Northumbrian | Indo-European |
| Enlhet | Mascoian |
| Enya | Niger–Congo |
| Erzya | Uralic |
| Ese Ejja | Tacanan |
| Estonian | Uralic |
| Estonian, Northeastern Coastal | Uralic |
| Estonian, South | Uralic |
| Esuma | Niger–Congo |
| Etruscan | Tyrsenian |
| Even | Tungusic |
| Evenk or Evenki | Tungusic |
| Ewe | Niger–Congo |
| Extremaduran | Indo-European |
| Extreme Southern Italian | Indo-European |
|
|
| Faetar or Faetar–Cigliàje | Indo-European |
| Faifi | Afroasiatic |
| Fali of Baissa | Niger–Congo |
| Faliscan | Indo-European |
| Fam | Niger–Congo |
| Fang | Niger–Congo |
| Faroese | Indo-European |
| Fas | Fas |
| Favorlang | Austronesian |
| Fembe | Trans–New Guinea |
| Fergana Kipchak | Turkic |
| Fijian | Austronesian |
| Filipino | Austronesian |
| Finland-Swedish Sign Language | Swedish Sign |
| Finnish | Uralic |
| Finnish Sign Language | Swedish Sign |
| Finongan | Trans–New Guinea |
| Fiwaga | Trans–New Guinea |
| Flemish | Indo-European |
| Flemish, East | Indo-European |
| Flemish, French | Indo-European |
| Flemish, West | Indo-European |
| Flinders Island | Pama–Nyungan |
| Foi | Trans–New Guinea |
| Foodo | Niger–Congo |
| Fon | Niger–Congo |
| Forak | Trans–New Guinea |
| Fox | Algic |
| Franco-Italian | Gallo-Italic, Venetian, and Oïl-based mixed language |
| Franco-Provençal or Arpitan | Indo-European |
| French | Indo-European |
| French, Louisiana | 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 West Lauwers Frisian | Indo-European |
| Friulian | Indo-European |
| Fula, Fulfulde, or Fulani | Niger–Congo |
| Fur | Nilo-Saharan |
| Futop | Niger–Congo |
| Futunan | Austronesian |
| Futuna-Aniwa | Austronesian |
| Fuyu Kyrgyz | Turkic |
|
|
| Ga | Niger–Congo |
| Gãã | Niger–Congo |
| Gaagudju | Arnhem |
| Gadaba | Dravidian |
| Gagauz | Turkic |
| Galatian | Indo-European |
| Galela | West Papuan |
| Galician | Indo-European |
| Galindian | Indo-European |
| Gallaecian | Indo-European |
| Gallurese | Indo-European |
| Gan | Sino-Tibetan |
| Ganda | Niger–Congo |
| Gangte | Sino-Tibetan |
| Gardiol | Indo-European |
| Garhwali | Indo-European |
| Garifuna | Arawakan |
| Garrwa | Garrwan |
| Gaulish | Indo-European |
| Gaulish, Cisalpine | 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 | Kartvelian |
| German | Indo-European |
| German Sign Language | DGSic |
| Geser | Austronesian |
| Ghadamès | Afroasiatic |
| Gikuyu or Kikuyu | Niger–Congo |
| Gilbertese or Kiribati | Austronesian |
| Gilaki | Indo-European |
| Gira | Trans–New Guinea |
| Giryama | Niger–Congo |
| Githabul | Pama–Nyungan |
| Gitxsan | Tsimshianic |
| Goaria | Indo-European |
| Gobasi | Trans–New Guinea |
| Gogo | Niger–Congo |
| Goguryeo | Koreanic |
| Golin | Trans–New Guinea |
| 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 |
| Guahibo | Guajiboan |
| Guanche | Afroasiatic |
| Guaraní | Tupian |
| Guaruyu | Tupian |
| Guaymí | Chibchan |
| Guazacapán | Xincan |
| Guinea-Bissau Creole | Portuguese-based creole |
| Gujarati | Indo-European |
| Gujari | Indo-European |
| Gula Iro or Kulaal | Niger–Congo |
| Gullah or Sea Island Creole English | English-based creole |
| Gumuz | Nilo-Saharan |
| Gunaikurnai | Pama–Nyungan |
| Gungu | Niger–Congo |
| Guniyandi | Bunuban |
| Guriaso | Senu River |
| Gusii | Niger–Congo |
| Guugu Yimithirr | Pama–Nyunga |
| Guwar | Pama–Nyungan |
| Guya | Trans–New Guinea |
| Guyanese Sign Language | Unclassified language |
| Gwa | Niger–Congo |
| Gwahatike | Trans–New Guinea |
| Gweno | Niger–Congo |
| Gwere | Niger–Congo |
| Gwichʼin | Na-Dene |
|
|
| Hachijō or shima kotoba | Japonic |
| Hadramautic | Afroasiatic |
| Hadza or Hatsa | Language isolate |
| Haida or Masset | Language isolate |
| Haitian Creole | French-based creole |
| Hakka | Sino-Tibetan |
| Halcnovian or Alzenau | Indo-European |
| Hamtai | Trans–New Guinea |
| Hän | Na-Dene |
| Hani | Sino-Tibetan |
| Hanis | Coosan |
| Harákmbut | Harákmbut–Katukinan |
| 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 | Yuman–Cochimí |
| Hawaiian | Austronesian |
| Hawaiʻi Sign Language | Language isolate or small language family |
| Haya | Niger–Congo |
| 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 |
| Hehe | Niger–Congo |
| Heiban | Niger–Congo |
| Hema | Niger–Congo |
| Herero | Niger–Congo |
| Hértevin | Afroasiatic |
| Hezhou | Uyghur and Mandarin-based mixed language |
| Highland Oaxaca Chontal | Tequistlatecan |
| Hiligaynon | Austronesian |
| Himyaritic | Afroasiatic |
| Hindi | Indo-European |
| Hindko | Indo-European |
| Hindustani | Indo-European |
| Hinukh | Northeast Caucasian |
| Hiri Motu | Motu-based pidgin |
| Hismaic | Afroasiatic |
| Hittite | Indo-European |
| Hixkaryana | Cariban |
| Hlai | Kra–Dai |
| Hmong | Hmong–Mien |
| Hmu | Hmong–Mien |
| Ho | Austroasiatic |
| Hobyót | Afroasiatic |
| Ho-Chunk | Siouan |
| Holoholo | Niger–Congo |
| Holu | Niger–Congo |
| Homa | Niger–Congo |
| Hopi | Uto-Aztecan |
| Hoti | Austronesian |
| Huamelultec | Tequistlatecan |
| Huastec or Teenek | Mayan |
| Huaulu | Austronesian |
| Huave | Language isolate |
| Huichol | Uto-Aztecan |
| Huiliche | Araucanian |
| Huizhou | Sino-Tibetan |
| Hulaulá | Afroasiatic |
| Huli | Trans–New Guinea |
| Humburi Senni | Nilo-Saharan |
| Hungana | Niger–Congo |
| Hungarian | Uralic |
| Hunnic | Unclassified language |
| Hup | Nadahup |
| Hurrian | Hurro-Urartian |
| Hutterisch or Tirolean | Indo-European |
| Hwa miao | Hmong–Mien |
|
|
| Iau | Lakes Plain |
| Ibembe | Niger–Congo |
| Ibibio | Niger–Congo |
| Iban | Austronesian |
| Ibanag | Austronesian |
| Icelandic | Indo-European |
| Idaxo-Isuxa-Tiriki | Niger–Congo |
| Ifè | Niger–Congo |
| Igbo or Ibo or Biafra | Niger–Congo |
| Ik | Nilo-Saharan |
| Ikalanga or Kalanga | Niger–Congo |
| Ikizu | Niger–Congo |
| Ikoma-Nata-Isenye | Niger–Congo |
| Ile Ape | Austronesian |
| Ili Turki | Turkic |
| Illyrian | Indo-European |
| Ilokano or Ilocano | Austronesian |
| Ilwana | Niger–Congo |
| Imroing | Austronesian |
| Inabaknon Language | Austronesian |
| Indi | Austronesian |
| Indonesian | Austronesian |
| Indo-Portuguese Creole of Bombay | Portuguese-based creole |
| Ingrian or Izhorian | Uralic |
| Ingush | Northeast Caucasian |
| Inuktitut | Eskaleut |
| Inupiaq | Eskaleut |
| Inuvialuktun | Eskaleut |
| Ipili | Trans–New Guinea |
| Iramba | Niger–Congo |
| Iraqw | Afroasiatic |
| Irish or Irish Gaelic | Indo-European |
| Irish Sign Language | Francosign |
| Irula | Dravidian |
| Isan or Northeastern Thai | Kra–Dai |
| Isanzu | Niger–Congo |
| Ishkashimi or Ishkashmi | Indo-European |
| Isirawa | Foja Range |
| Israeli Sign Language | DGSic |
| Istriot | Indo-European |
| Istro-Romanian | Indo-European |
| Italian | Indo-European |
| Italian Sign Language | Francosign |
| Italo-Paulista | Neapolitan, Venetian, and Caipira Portuguese-based pidgin |
| Ivatan | Austronesian |
| Iwam | Sepik |
| Iyo | Trans–New Guinea |
| Izon | Niger–Congo |
|
|
|
| Jagham | Niger–Congo |
| Jacaltek, Jakalteko or Popti' | Mayan |
| Jalaa | Unclassified language, possibly Niger–Congo |
| Jamaican Patois | English-based creole |
| Jandai | Pama–Nyungan |
| Japanese | Japonic |
| Japanese Sign Language | Japanese Sign |
| Japhug | Sino-Tibetan |
| Jaqaru | Aymaran |
| Jarai | Austronesian |
| Jarawa | Ongan |
| Javanese | Austronesian |
| Jê | Macro-Jê |
| Jeju | Koreanic |
| Jemez or Towa | Tanoan–Kiowa |
| Jewish Babylonian Aramaic | Afroasiatic |
| Jewish Neo-Aramaic dialect of Zakho | Afroasiatic |
| Jhar or Jarawa | Niger–Congo |
| Jiamao | Kra–Dai |
| Jibbali or Shehri | Afroasiatic |
| Jicarilla | Na-Dene |
| Jie | Yeniseian |
| Jin | Sino-Tibetan |
| Jirajara | Jirajaran |
| Jita | Niger–Congo |
| Juang | Austroasiatic |
| Judeo-Georgian | Kartvelian |
| Jumaytepeque | Xincan |
| Junjiahua | Sino–Tibetan |
| Jurchen | Tungusic |
|
|
| Kaʼapor Sign Language | Language isolate |
| Kaaps | Indo-European |
| Kabardian | Northwest Caucasian |
| Kabiye | Niger–Congo |
| Kabwa | Niger–Congo |
| Kabyle | Afroasiatic |
| Kachin or Jingpo | Sino-Tibetan |
| Kagulu | Niger–Congo |
| Kahe | Niger–Congo |
| Kaiku | Niger–Congo |
| Kaili | Austronesian |
| Kaimbulawa | Austronesian |
| Kaingáng | Macro-Jê |
| Kaiwá | Tupian |
| Kajkavian | Indo-European |
| Kajuk | Niger–Congo |
| Kaki Ae | Language isolate |
| Kalabari | Niger–Congo |
| Kala Lagaw Ya | Pama–Nyungan |
| Kalami or Gawri or Dirwali | Indo-European |
| Kalao | Austronesian |
| Kalahsa-mun | Indo-European |
| Kalašma | Indo-European |
| Kalinago | Arawakan |
| Kalkatungu | Pama–Nyungan |
| Kallawaya | Puquina and Quechuan-based mixed language |
| Kalmyk | Mongolic |
| Kalto or Nahali | Indo-European |
| Kaluli | Trans–New Guinea |
| Kam | Kra–Dai |
| Kamaru | Austronesian |
| Kamasa | Trans–New Guinea |
| Kamassian | Uralic |
| Kamba | Niger–Congo |
| Kamberau | Trans–New Guinea |
| Kambot | Ramu–Lower Sepik |
| Kamchadal, Eastern | Chukotko-Kamchatkan |
| Kamchadal, Southern | Chukotko-Kamchatkan |
| Kamchadal, Western or Itelmen | Chukotko-Kamchatkan |
| Kangjia | Mongolic |
| Kami | Niger–Congo |
| Kamoro | Trans–New Guinea |
| Kamtapuri or Rangpuri or Rajbongshi | Indo-European |
| Kanakanavu | Austronesian |
| Kandawo | Trans–New Guinea |
| Kanembu | Nilo-Saharan |
| Kang | Kra–Dai |
| Kankanaey | Austronesian |
| Kannada | Dravidian |
| Kanuri | Nilo-Saharan |
| Kanuri, Bilma | Nilo-Saharan |
| Kanuri, Central | Nilo-Saharan |
| Kanuri, Manga | Nilo-Saharan |
| Kanuri, Tumari | Nilo-Saharan |
| Kaonde or Chikaonde | Niger–Congo |
| Kapampangan | Austronesian |
| Karachay–Balkar | Turkic |
| Karagas or Tofa | Turkic |
| Karaim | Turkic |
| Karakalpak | Turkic |
| Karawari or Tabriak | Ramu–Lower Sepik |
| Karelian | Uralic |
| Karen | Sino-Tibetan |
| Karey | Austronesian |
| Kari | Niger–Congo |
| Karkar | Pauwasi |
| Kasabe | Niger–Congo |
| Kashaya | Pomoan |
| Kashmiri | Indo-European |
| Kashubian | Indo-European |
| Kasiguranin or Casiguran | Austronesian |
| Kasua | Trans–New Guinea |
| Kâte | Trans–New Guinea |
| Katla | Niger–Congo |
| Kaugel | Trans–New Guinea |
| Kaure | Kaure–Kosare |
| Kauwera | Foja Range |
| Kavalan | Austronesian |
| Kawacha | Trans–New Guinea |
| Kawésqar or Alacaluf | Alacalufan |
| Kazakh | Turkic |
| Kedang | Austronesian |
| Kelantan Peranakan Hokkien | Hokkien, Southern Thai, and Kelantan Malay-based mixed language |
| Kemedzung | Niger–Congo |
| Kendem | Niger–Congo |
| Kenyang | Niger–Congo |
| Kenyan Sign Language | Kenyan–Somali Sign |
| Kéo | Austronesian |
| Keoru | Trans–New Guinea |
| Kepo' | Austronesian |
| Kerek | Chukotko-Kamchatkan |
| Keres or Keresan | Language isolate or small language family |
| Kerewe | Niger–Congo |
| Ket | Yeniseian |
| Ketangalan or Luilang | Austronesian |
| Kewa | Trans–New Guinea |
| Khakas | Turkic |
| Khalaj | Turkic |
| Kham or Sheshi | Sino-Tibetan |
| Khamnigan Mongol | Mongolic |
| Khamyang | Kra–Dai |
| Khandeshi | Indo-European |
| Khanty or Ostyak | Uralic |
| Khasi | Austroasiatic |
| Khayo | Niger–Congo |
| Khazar | Turkic |
| Khitan | Mongolic |
| Khmer | Austroasiatic |
| Khmu | Austroasiatic |
| Khoekhoe | Khoe–Kwadi |
| Khorasani Turkic | Turkic |
| Khowar | Indo-European |
| Kibala | Niger–Congo |
| K'iche' | Mayan |
| Kiembu or Embu | Niger–Congo |
| Kija | Jarrakan |
| Kili | Tungusic |
| Kilmeri | Border |
| Kiluba | Niger–Congo |
| Kimatuumbi | Niger–Congo |
| Kimbu | Niger–Congo |
| Kimbundu | Niger–Congo |
| Kinaray-a or Hiraya | Austronesian |
| Kinga | Niger–Congo |
| Kinyarwanda | Niger–Congo |
| Kipsigis | Nilo-Saharan |
| Kirombo | Niger–Congo |
| Kirundi | Niger–Congo |
| Kisi | Niger–Congo |
| Kivunjo | Niger–Congo |
| Klallam or Clallam | Salishan |
| Klata | Austronesian |
| Knaanic | Indo-European |
| Ko or Fungor | Niger–Congo |
| Koalib | Niger–Congo |
| Koasati or Coushatta | Muskogean |
| Koba | Austronesian |
| Kobo | Niger–Congo |
| Kodava or Kodagu or Coorgi | Dravidian |
| Kodeoha | Austronesian |
| Kohistani or Khili | Indo-European |
| Kokoda | Trans–New Guinea |
| Kola | Austronesian |
| Kolami | Dravidian |
| Kombio | Torricelli |
| Komi or Komi-Zyrian | Uralic |
| Komo (Bantu) | Niger–Congo |
| Konai | Trans–New Guinea |
| Konkani | Indo-European |
| Kongo or Kikongo | Niger–Congo |
| Konkow | Maiduan |
| Konongo–Ruwila | Niger–Congo |
| Konzo or Konjo | Niger–Congo |
| Kopar | Ramu–Lower Sepik |
| Koraga | Dravidian |
| Korandje | Nilo-Saharan |
| Korean | Koreanic |
| Korku | Austroasiatic |
| Korowai | Trans–New Guinea |
| Korwa | Austroasiatic |
| Koryak | Chukotko-Kamchatkan |
| Kosraean | Austronesian |
| Kota | Dravidian |
| Koyraboro Senni | Nilo-Saharan |
| Koyra Chiini or Western Songhay | Nilo-Saharan |
| Koy Sanjaq Christian Neo-Aramaic | Afroasiatic |
| Koya | Dravidian |
| Krymchak or Judeo-Crimean Tatar | Turkic |
| Kubo | Trans–New Guinea |
| Kui | Dravidian |
| Kujarge | Unclassified language, perhaps Afroasiatic |
| Kukkuzi | Uralic |
| Kulina | Arawan |
| Kulisusu | Austronesian |
| Kulon | Austronesian |
| Kulung (Jarawan) | Niger–Congo |
| Kuman | Trans–New Guinea |
| Kumandin | Turkic |
| Kumauni | Indo-European |
| Kumbainggar or Gumbaynggirr | Pama–Nyungan |
| Kumbewaha | Austronesian |
| Kumeyaay or Kumiai | Yuman–Cochimí |
| Kumyk | Turkic |
| Kumzari | Indo-European |
| !Kung | Kxʼa |
| Kungarakany | Arnhem |
| Kungkari | Pama–Nyungan |
| Kunyi | Niger–Congo |
| Kurbet | Domari and Cypriot Turkish-based creole |
| 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 |
| Kuria | Niger–Congo |
| Kurukh or Kurux | Dravidian |
| Kusunda | Language isolate |
| Kutenai or Kootenay or Ktunaxa | Language isolate |
| Kutong | Trans–New Guinea |
| Kutu | Niger–Congo |
| Kuy | Austroasiatic |
| Kven | Uralic |
| Kwak'wala | Wakashan |
| Kwamba or Amba | Niger–Congo |
| Kwanja | Niger–Congo |
| Kwanyama or Ovambo | Niger–Congo |
| Kwaya | Niger–Congo |
| Kwerba | Foja Range |
| Kwerba Mamberamo | Foja Range |
| Kwere | Niger–Congo |
| Kxoe | Khoe–Kwadi |
| Kyaka | Trans–New Guinea |
| Kyrgyz or Kirghiz | Turkic |
|
|
| Laal | Unclassified language |
| Labir | Niger–Congo |
| Lacandon | Mayan |
| Lach | Indo-European |
| Ladakhi | Sino-Tibetan |
| Ladin | Indo-European |
| Ladino or Judeo-Spanish | Indo-European |
| Laeko | Torricelli |
| Laiyolo | Austronesian |
| Lak | Northeast Caucasian |
| Lakota or Teton | Siouan |
| Lama | Sino-Tibetan |
| Lamaholot | Austronesian |
| Lamalera | Austronesian |
| Lamatuka | Austronesian |
| Lambadi, Lamani, or Banjari | Indo-European |
| Lame | Niger–Congo |
| Lango | Nilo-Saharan |
| Lao or Laotian | Kra–Dai |
| Laragiya | Limilngan-Wulna |
| Lardil | Tangkic |
| Larestani | Indo-European |
| Laro | Niger–Congo |
| Lasalimu | Austronesian |
| Latin | Indo-European |
| Latin, British | Indo-European |
| Latin, Pannonian | Indo-European |
| Latgalian | Indo-European |
| Latvian | Indo-European |
| Lauje | Austronesian |
| Laz or Lazuri | Kartvelian |
| Lega | Niger–Congo |
| Lembena | Trans–New Guinea |
| Lemko | Indo-European |
| Lenca, Honduran | Lencan |
| Lenca, Salvadoran | Lencan |
| Lengola | Niger–Congo |
| Leonese | Indo-European |
| Lepontic | Indo-European |
| Levuka | Austronesian |
| Lewo Eleng | Austronesian |
| Lewotobi | Austronesian |
| Lezgi or Agul | Northeast Caucasian |
| Liabuku | Austronesian |
| Liana | Austronesian |
| Ligbi or Ligby | Niger–Congo |
| Lika | Niger–Congo |
| Limburgish | Indo-European |
| Lingala | Niger–Congo |
| Lio | Austronesian |
| Lipan | Na-Dene |
| Lisan al-Dawat | Indo-European |
| Lisela | Austronesian |
| 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 |
| Logol | Niger–Congo |
| Logooli | Niger–Congo |
| Lola | Austronesian |
| Loloda | West Papuan |
| Lomavren | Lom and Armenian-based mixed language |
| Lombard | Indo-European |
| Lorang | Austronesian |
| 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 |
| Lugbara | Nilo-Saharan |
| Luguru | Niger–Congo |
| Luhya | Niger–Congo |
| Lunda or Chilunda | Niger–Congo |
| Luri | Indo-European |
| Lushootseed | Salishan |
| Lusitanian | Indo-European |
| Lusoga or Soga | Niger–Congo |
| Luvale | Niger–Congo |
| Luwati | Indo-European |
| Luxembourgish | Indo-European |
|
|
| Maasai | Nilo-Saharan |
| Macedonian | Indo-European |
| Macedonian Sign Language | Unclassified language |
| Machiguenga | Arawakan |
| Macuna | Tucanoan |
| Madí or Jamamadí or Kapaná | Arauan |
| Madurese | Austronesian |
| Magadhi | Indo-European |
| Magoma | Niger–Congo |
| Maguindanao | Austronesian |
| Mai Chinese | Sino-Tibetan |
| Mairasi | Mairasi |
| Maithili | Indo-European |
| Mak | Kra–Dai |
| Makasae | Trans–New Guinea |
| Makasar | Austronesian |
| Makhuwa or Makua | Niger–Congo |
| Makhuwa-Meetto | Niger–Congo |
| Makwe | Niger–Congo |
| Malagasy | Austronesian |
| Malak-Malak | Language isolate |
| Malawian Sign Language | Unclassified language |
| 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 |
| Mama | Niger–Congo |
| Mamaa | Trans–New Guinea |
| Ma Manda | Trans–New Guinea |
| Mambila | Niger–Congo |
| Mamluk-Kipchak | Turkic |
| Manchu | Tungusic |
| Mandaic | Afroasiatic |
| Mandarin | Sino-Tibetan |
| Mandarin, Dungan | Sino-Tibetan |
| Mandarin, Gangou | Sino-Tibetan |
| Mandarin, Sichuanese | Sino–Tibetan |
| Mandarin, Taz | Sino-Tibetan |
| Mandinka | Niger–Congo |
| Mangarrayi | Arnhem |
| Manggarai | Austronesian |
| Manipa | Austronesian |
| Manombai | Austronesian |
| Mansi or Vogul | Uralic |
| Manta | Niger–Congo |
| Manusela | Austronesian |
| Manx | Indo-European |
| Manyika | Niger–Congo |
| Maojia | Sino-Tibetan |
| Maonan | Kra–Dai |
| Māori | Austronesian |
| Mape | Trans–New Guinea |
| Mapoyo | Cariban |
| Mapudungun or Mapuche | Araucanian |
| Maquiritari or Ye'kuana | Cariban |
| Marachi | Niger–Congo |
| Maranao | Austronesian |
| Marathi | Indo-European |
| Marcho-Magdeburgian | Indo-European |
| Mardin Sign Language | Language isolate |
| Mari or Cheremis | Uralic |
| Mari, Hill | Uralic |
| Mari, Meadow | Uralic |
| Mari, Northwestern | Uralic |
| Maria | Dravidian |
| Marimanindji | Western Daly |
| Maring | Trans–New Guinea |
| Mariri | Austronesian |
| Mariveleño | Austronesian |
| Marquesan | Austronesian |
| Marranj | Western Daly |
| Marrgu | Marrku–Wurrugu |
| Marshallese or Ebon | Austronesian |
| Martha's Vineyard Sign Language | Language isolate |
| Marwari | Indo-European |
| Masaba | Niger–Congo |
| Masbatenyo or Minasbate | Austronesian |
| Masela | Austronesian |
| Mashi | Niger–Congo |
| Masiwang | Austronesian |
| Masurian | Indo-European |
| Matagi | Japanese-based Cant |
| Matngele | Eastern Daly |
| Mattokki | Nilo-Saharan |
| Mauritian Creole or Morisyen | French-based creole |
| Maung | Iwaidjan |
| Mawayana or Mapidian | Arawakan |
| Mayan Sign Language | Language isolate or small language family |
| Mayo | Uto-Aztecan |
| Mazandarani or Tabari | Indo-European |
| Mazahua | Oto-Manguean |
| Mazatec | Oto-Manguean |
| Mbala | Niger–Congo |
| Mbe | Niger–Congo |
| Mbo | Niger–Congo |
| Mbole | Niger–Congo |
| Mbonga | Niger–Congo |
| Mbongno | Niger–Congo |
| Mbre or Pɛrɛ | Niger–Congo |
| Mbugwe | Niger–Congo |
| Mbuk | Niger–Congo |
| Mbula-Bwazza | Niger–Congo |
| Meänkieli or Tornedalian Finnish | Uralic |
| Mebu | Trans–New Guinea |
| Median | Indo-European |
| Megleno-Romanian | Indo-European |
| Megrelian or Mingrelian | Kartvelian |
| Mehri or Mahri | Afroasiatic |
| Meitei or Manipuri or Meithei | Sino-Tibetan |
| Melpa | Trans–New Guinea |
| Menominee | Algic |
| Mentawai | Austronesian |
| Menya | Trans–New Guinea |
| Meriam | Eastern Trans-Fly |
| Meroitic | Unclassified language, maybe Nilo-Saharan or Language isolate |
| Meru or Kimeru | Niger–Congo |
| Merya | Uralic |
| Mescalero | Na-Dene |
| Messapic | Indo-European |
| Mewari | Indo-European |
| Mewati | Indo-European |
| Michif | Métis French and Plains Cree-based mixed language |
| Miji | Mijiic |
| Mijikenda | Niger–Congo |
| Mikarew | Ramu–Lower Sepik |
| Mikasuki or Miccosukee | Muskogean |
| Mi'kmaq or Micmac | Algic |
| Minaean | Afroasiatic |
| Minakyesu or Bati | Austronesian |
| Minangkabau | Austronesian |
| Min | Sino-Tibetan |
| Min, Central | Sino-Tibetan |
| Min, Datian | Sino-Tibetan |
| Min, Eastern | Sino-Tibetan |
| Min, Fuzhou | Sino–Tibetan |
| Min, Hainan | Sino-Tibetan |
| Min, Haklau | Sino-Tibetan |
| Min, Hokkien | Sino-Tibetan |
| Min, Leizhou | Sino-Tibetan |
| Min, Longdu | Sino-Tibetan |
| Min, Longyan | Sino-Tibetan |
| Min, Nanlang | Sino-Tibetan |
| Min, Northern | Sino-Tibetan |
| Min, Pu–Xian | Sino-Tibetan |
| Min, Quanzhou | Sino-Tibetan |
| Min, Sanxiang | Sino-Tibetan |
| Min, Shao–Jiang | Sino-Tibetan |
| Min, Southern | Sino-Tibetan |
| Min, Taiwanese Hokkien | Sino-Tibetan |
| Min, Teochew | Sino-Tibetan |
| Mingar | Austronesian |
| Minica Huitoto | Witotoan |
| Minjiang | Sino–Tibetan |
| Mirandese | Indo-European |
| Miriti | Tucanoan |
| Miskito or Miskitu | Misumalpan |
| Mithaka | Pama–Nyungan |
| Mituku | Niger–Congo |
| Mixe | Mixe–Zoque |
| Mixtec | Oto-Manguean |
| Mizo | Sino-Tibetan |
| Mnong or M'Nong | Austroasiatic |
| Mobilian Jargon | Choctaw and French-based pidgin |
| Modole | West Papuan |
| Moghol | Mongolic |
| Mohawk | Iroquoian |
| Mojave | Yuman–Cochimí |
| Moksela | Austronesian |
| Moksha | Uralic |
| Molengue | Niger–Congo |
| Moma | Austronesian |
| Mon | Austroasiatic |
| Middle Mongol | Mongolic |
| Mongolian | Mongolic |
| Mongolian, Alasha | Mongolic |
| Mongolian, Classical | Mongolic |
| Mongolian, Khalkha | Mongolic |
| Mongolian, Peripheral or Inner Mongolian | Mongolic |
| Mono | Niger–Congo |
| Mono | Uto-Aztecan |
| Mono | Austronesian |
| Montagnais or Innu | Algic |
| Montenegrin | Indo-European |
| Mopan | Mayan |
| Mori Atas | Austronesian |
| Mori Bawah | Austronesian |
| Moriori | Austronesian |
| Moro | Niger–Congo |
| Moronene | Austronesian |
| Motu | Austronesian |
| Moxo | Arawakan |
| Mozambican Sign Language | Unclassified language |
| Mozarabic or Andalusi Romance | Indo-European |
| Mpinda | Niger–Congo |
| Mufian | Torricelli |
| Muher | Afroasiatic |
| Muna | Austronesian |
| Mundari | Austroasiatic |
| Mundugumor | Yuat |
| Mundurukú | Tupian |
| Mungkip | Trans–New Guinea |
| Munji | Indo-European |
| Muong | Austroasiatic |
| Muratayak | Trans–New Guinea |
| Muria | Dravidian |
| Murrinh-patha | Southern Daly |
| Muscogee or Creek | Muskogean |
| Musi | Austronesian |
| Mutumui | Pama–Nyungan |
| Mvanip | Niger–Congo |
| Mwani | Niger–Congo |
|
|
| Naami or Bebe | Niger–Congo |
| Nafaanra | Niger–Congo |
| Nafusi | Afroasiatic |
| Nagarchal | Dravidian |
| Nagumi | Niger–Congo |
| Nahuatl | Uto-Aztecan |
| Nakama | Trans–New Guinea |
| Naki | Niger–Congo |
| Nama | Yam |
| Namat | Yam |
| Nambikwara | Nambikwaran |
| Nambo-Namna | Yam |
| Namibian Sign Language | Language isolate |
| Namo | Yam |
| Nanai | Tungusic |
| Nande | Niger–Congo |
| Nankina | Trans–New Guinea |
| Napu | Austronesian |
| Nara | Nilo-Saharan |
| Narak | Trans–New Guinea |
| Nauruan | Austronesian |
| Navajo or Navaho | Na-Dene |
| Ndaka | Niger–Congo |
| Ndamba | Niger–Congo |
| Ndau or Southeast Shona | Niger–Congo |
| Nde-Nsele-Nta | Niger–Congo |
| Ndoe | Niger–Congo |
| Ndombe | Niger–Congo |
| Ndonga | Niger–Congo |
| Ndoola or Njoyamɛ | Niger–Congo |
| Ndunda | Niger–Congo |
| Neapolitan | Indo-European |
| Negidal | Tungusic |
| Nek | Trans–New Guinea |
| Nekgini | Trans–New Guinea |
| Neko | Trans–New Guinea |
| Nema | Trans–New Guinea |
| Nenets or Yurak | Uralic |
| Nete | Trans–New Guinea |
| Nepal Bhasa or Newari | Sino-Tibetan |
| Nepali | Indo-European |
| New Zealand Sign Language | BANZSL |
| Nez Perce | Sahaptian |
| Ngad'a | Austronesian |
| Ngaing | Trans–New Guinea |
| Ngambay | Nilo-Saharan |
| Ngamini | Pama–Nyungan |
| Nganasan or Tavgi | Uralic |
| Ngarinyin | Worrorran |
| Ngbee | Niger–Congo |
| Ngbinda | Niger–Congo |
| Ngoreme | Niger–Congo |
| Ngulu | Niger–Congo |
| Ngumba | Niger–Congo |
| Nheengatu or Geral or Modern Tupí | Tupian |
| Nias | Austronesian |
| Nicaraguan Sign Language | Language isolate |
| Niellim | Niger–Congo |
| Nigerian Pidgin | English-based pidgin |
| Nihali or Nahali | Language isolate |
| Nii | Trans–New Guinea |
| Nimadi | Indo-European |
| Nimi | Trans–New Guinea |
| Nisenan | Maiduan |
| Nisga'a | Tsimshianic |
| Niuean or Niue | Austronesian |
| Nivkh or Gilyak | Language isolate |
| Nizaa | Niger–Congo |
| Njerep | Niger–Congo |
| Nkem-Nkum | Niger–Congo |
| N'Ko | Niger–Congo |
| Nkoroo | Niger–Congo |
| Nnam | Niger–Congo |
| Nogai | Turkic |
| Nomane | Trans–New Guinea |
| Noni | Niger–Congo |
| Norfuk or Norfolk | Cant, English-Tahitian based |
| Noric | Indo-European |
| Norman or Norman-French | Indo-European |
| Norn | Indo-European |
| Northern Altai | Turkic |
| Northern Emberá | Chocoan |
| Northeast Malakula | Austronesian |
| Northern Ndebele | Niger–Congo |
| Northern Paiute | Uto-Aztecan |
| Northern Sotho or Sepedi | Niger–Congo |
| Northern Straits Salish | Salishan |
| Norwegian (Bokmål, Nynorsk, Riksmål) | Indo-European |
| Nǀu | Tuu |
| Nuer | Nilo-Saharan |
| Nuk | Trans–New Guinea |
| Nukak | Nukak-Kakwa |
| Nukna | Trans–New Guinea |
| Numanggang | Trans–New Guinea |
| Nunukul | Pama–Nyungan |
| Nuu-chah-nulth | Wakashan |
| Nuxálk or Bella Coola | Salishan |
| Nyabwa | Niger–Congo |
| Nyah Kur | Austroasiatic |
| Nyali | Niger–Congo |
| Nyambo | Niger–Congo |
| Nyamwezi | Niger–Congo |
| Nyanga | Niger–Congo |
| Nyanga-li | Niger–Congo |
| Nyang'i | Nilo-Saharan |
| Nyangumarta | Pama–Nyungan |
| Nyaturu | Niger–Congo |
| Nyawaygi | Pama–Nyungan |
| Nyole (Kenya) | Niger–Congo |
| Nyole (Uganda) | Niger–Congo |
| Nyoro | Niger–Congo |
|
|
| Occitan or Provençal | Indo-European |
| Odia | Indo-European |
| Odki or Od | Indo-European |
| Odoodee | Trans–New Guinea |
| Oirat | Mongolic |
| Ojibwe, Ojibwa, or Chippewa | Algic |
| Okinawan | Japonic |
| Okodia | Niger–Congo |
| Oko-Juwoi | Great Andamanese |
| Old Leonese or Medieval Leonese | Indo-European |
| Old Prussian | Indo-European |
| Olunyole or Nyole | Niger–Congo |
| Omagua | Tupian |
| Omok | Yukaghir |
| Oneida | Iroquoian |
| Ongota | Unclassified language |
| Onobasulu | Trans–New Guinea |
| O'odham | Uto-Aztecan |
| Opao | Trans–New Guinea |
| Ormuri | Indo-European |
| Oroch | Tungusic |
| Orok | Tungusic |
| Orokolo | Trans–New Guinea |
| Oromo or Afaan Oromoo | Afroasiatic |
| Oroqen | Tungusic |
| Oruma | Niger–Congo |
| Oscan | Indo-European |
| Ossetian or Ossetic | Indo-European |
| Ossetian, Digor | Indo-European |
| Ossetian, Jassic or Jasz | Indo-European |
| Ossetian, Iron | Indo-European |
| Otomaco | Otomákoan |
| Otoro | Niger–Congo |
| Ottoman Sign Language | Language isolates |
| Övdalian | Indo-European |
|
|
| Paakantyi | Pama–Nyungan |
| Padoe | Austronesian |
| Páez or Nasa Yuwe | Language isolate |
| Pagu | West Papuan |
| Paiwan | Austronesian |
| Palauan | Austronesian |
| Pali | Indo-European |
| Palikúr | Arawakan |
| Palu'e | Austronesian |
| Pame | Oto-Manguean |
| Pamona | Austronesian |
| Pancana | Austronesian |
| Pangasinan | Austronesian |
| Pangwa | Niger–Congo |
| Papiamento or Papiamentu | Portuguese-based creole |
| Papora-Hoanya | Austronesian |
| Parachi | Indo-European |
| Paraujano | Arawakan |
| Pare | Niger–Congo |
| Paredarerme | Eastern Tasmanian |
| Parkari Koli | Indo-European |
| Parthian | Indo-European |
| Parya | Indo-European |
| Pashto, Pushto, or Pashtu | Indo-European |
| Patwin | Wintuan |
| Pawnee | Caddoan |
| Paya or Pech | Chibchan |
| Pazeh | Austronesian |
| Pecheneg | Turkic |
| Peerapper | Western Tasmanian |
| Pei | Sepik |
| Pemon | Cariban |
| Pémono | Cariban |
| Pendau | Austronesian |
| 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 |
| Piaroa | Piaroa–Saliban |
| Picard | Indo-European |
| Pictish | Indo-European |
| Pimpama | Pama–Nyungan |
| Ping | Sino–Tibetan |
| Pipil or Nawat | Uto-Aztecan |
| Pirahã | Mura |
| Pirriya | Pama–Nyungan |
| Pitta Pitta | Pama–Nyungan |
| Plains Miwok | Utian |
| Plautdietsch or Mennonite Low German | Indo-European |
| Podlachian or Podlashuk | Indo-European |
| Pogolo | Niger–Congo |
| Pokomo | Niger–Congo |
| Polabian | Indo-European |
| Polish | Indo-European |
| Polish Sign Language | Unclassified language |
| Pomak | Indo-European |
| Pomeranian | Indo-European |
| Popoloca | Oto-Manguean |
| Portuguese | Indo-European |
| Portuguese Sign Language | Swedish Sign |
| Pothohari or Pahari-Potwari | Indo-European |
| Pradhan or Pardhan | Dravidian |
| Pre-Samnite | Indo-European |
| Pucikwar | Great Andamanese |
| Puelche | Chonan |
| Puma | Sino-Tibetan |
| Punic, Phoenicio-Punic, or Carthaginian | Afroasiatic |
| Punjabi, Panjabi, or Gurmukhi | Indo-European |
| Purari | Trans–New Guinea |
| Purépecha or Tarascan | Language isolate |
| Puri | Purian |
| Puyuma | Austronesian |
|
|
| Q'anjob'al | Mayan |
| Qaqet | Baining |
| Qashqai or Ghashghai | Turkic |
| Qatabanian | Afroasiatic |
| Qahveh Khaneh Sign Language | Language isolate |
| Q'eqchí | Mayan |
| Qoqmončaq | Kazakh, Mongolian, and Evenki-based mixed language |
| Quebec Sign Language | Francosign |
| Quechua | Quechuan |
| Quechua, Ancash | Quechuan |
| Quechua, Huallaga | Quechuan |
| Quechua, North Junín | Quechuan |
| Quechua, Pacaraos | Quechuan |
| Quecha, Wanka | Quechuan |
| Quechua, Yaru | Quechuan |
| Quechua, Yauyos–Chincha | Quechuan |
| Quelia | German and Russian-based mixed language |
| Quileute | Chimakuan |
|
|
| Rahambuu | Austronesian |
| Rajasthani | Indo-European |
| Rajong | Austronesian |
| Rampi | Austronesian |
| Rangi | Niger–Congo |
| Rani | Indo-European |
| Ratagnon, Datagnon, or Latagnun | Austronesian |
| Rawa | Trans–New Guinea |
| Razi | Indo-European |
| Razihi | Afroasiatic |
| Regi or Kara | Niger–Congo |
| Rembong | Austronesian |
| Remontado Dumagat | Austronesian |
| Resian | Indo-European |
| Réunion Creole or Bourbonnais | French-based creole |
| Rijāl Almaʿ | Afroasiatic |
| Riung | Austronesian |
| 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 | Austronesian |
| Rombo | Niger–Congo |
| Rongga | Austronesian |
| Rotokas | North Bougainville |
| Rotuman | Austronesian |
| Rouran | Mongolic |
| Rukai | Austronesian |
| Runyankole language or Nyankore | Niger–Congo |
| Rusa | 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 |
| Ruuli | Niger–Congo |
|
|
| Saari | Niger–Congo |
| Saaroa | Austronesian |
| Sabaic or Sabaean | Afroasiatic |
| Safaitic | Afroasiatic |
| Safeyoka | Trans–New Guinea |
| Sagalla | Niger–Congo |
| Saisiyat | Austronesian |
| Sakizaya | Austronesian |
| Salar | Turkic |
| Salas | Austronesian |
| Saluan | Austronesian |
| Samaritan Aramaic | Afroasiatic |
| Sambal | Austronesian |
| Samberigi | Trans–New Guinea |
| 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 |
| Samia | Niger–Congo |
| Samo | Trans–New Guinea |
| Samoan | Austronesian |
| Samoan Sign Language | BANZSL |
| Sandawe | Language isolate |
| Sango | Ngbandi-based creole |
| Sangu | Niger–Congo |
| Sanskrit | Indo-European |
| Santali | Austroasiatic |
| Sara Bakati' | Austronesian |
| 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 |
| Sarudu | Austronesian |
| Sasak | Austronesian |
| Sassarese | Indo-European |
| Saurashtra or Sourashtra | Indo-European |
| Savi | Indo-European |
| Sawai | Austronesian |
| Scots | Indo-European |
| Scots, Shetlandic or Shaetlan | Indo-European |
| Scots, Ulster | Indo-European |
| Scottish Gaelic or Scots Gaelic or Gaidhlig or Gaelic | Indo-European |
| Sediq | Austronesian |
| Sedoa | Austronesian |
| Selangor Sign Language | Francosign |
| Selk'nam | Chonan |
| Selkup or Ostyak Samoyed | Uralic |
| Semnani | Indo-European |
| Sempan | Trans–New Guinea |
| Senaya | Afroasiatic |
| Sentani | Demta–Sentani |
| Sentinelese | Unclassified language |
| Serbian | Indo-European |
| Serbo-Croatian | Indo-European |
| Serili | Austronesian |
| Sesotho | Niger–Congo |
| Seto or Setu | Uralic |
| Seychellois Creole | French-based creole |
| Shabaki | Indo-European |
| Shambala | Niger–Congo |
| Shan | Kra–Dai |
| Shaozhou Tuhua | Sino–Tibetan |
| Shasta | Shastan |
| Shanke | Sino–Tibetan |
| Shekhawati | Indo-European |
| Shelta | Irish and Irish English-based mixed language |
| Shiki | Niger–Congo |
| Shimaore | Niger–Congo |
| Shina | Indo-European |
| Shipibo or Shipibo-Konibo | Panoan |
| Shona | Niger–Congo |
| Shor | Turkic |
| Shoshoni or Shoshone | Uto-Aztecan |
| Shtokavian | Indo-European |
| Shuar | Chicham |
| Shughni | Indo-European |
| Shumashti | Indo-European |
| Shuswap or Secwepemctsín | Salishan |
| Shwai | Niger–Congo |
| Siberian Ingrian Finnish | Ingrian Finnish and Izhorian-based mixed language |
| Siberian Tatar | Turkic |
| Siberian Tatar, Tom | Turkic |
| Sicilian | Indo-European |
| Siculian | Indo-European |
| Sidamo | Afroasiatic |
| Sierra Popoluca or Soteapanec | Mixe–Zoque |
| Sika | Austronesian |
| Silesian | Indo-European |
| Silla or Old Korean | Koreanic |
| Silt'e or Selti or East Gurage | Afroasiatic |
| Simbari | Trans–New Guinea |
| Sinacantán | Xincan |
| Sinasina | Trans–New Guinea |
| Singa | Niger–Congo |
| Sindhi | Indo-European |
| Singapore Sign Language | Francosign |
| Sinhala | Indo-European |
| Sioux | Siouan |
| Siraya | Austronesian |
| Sivandi | Indo-European |
| Siwi | Afroasiatic |
| 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 |
| So'a | Austronesian |
| Soddo or Kistane | Afroasiatic |
| Sokna | Afroasiatic |
| Som | Trans–New Guinea |
| Somali | Afroasiatic |
| Somali Sign Language | Kenyan–Somali Sign |
| Somyev | Niger–Congo |
| Sonde | Niger–Congo |
| Songo | Niger–Congo |
| Songoora | Niger–Congo |
| Sonia | Trans–New Guinea |
| Sonjo or Temi | Niger–Congo |
| Sonqori | Turkic |
| Sonsorolese | Austronesian |
| Soo | Nilo-Saharan |
| Soqotri | Afroasiatic |
| Sora | Austroasiatic |
| Sorbian, Lower | Indo-European |
| Sorbian, Upper | Indo-European |
| Sourashtra | Indo-European |
| South African Sign Language | BANZSL |
| Southeast Ijo | Niger–Congo |
| Southern Altai | Turkic |
| Southern Ndebele | Niger–Congo |
| Southern Tiwa | Tanoan–Kiowa |
| South Picene | Indo-European |
| Soyot | Turkic |
| 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 |
| Squamish | Salishan |
| Sranan Tongo | English-based creole |
| St'at'imcets or Lillooet | Salishan |
| Sucite or Sìcìté Sénoufo | Niger–Congo |
| Suba | Niger–Congo |
| Suba-Simbiti | Niger–Congo |
| Subi | Niger–Congo |
| Suku | Niger–Congo |
| Sukuma | Niger–Congo |
| Sumbawa | Austronesian |
| Sumbwa | Niger–Congo |
| Sundanese | Austronesian |
| Supyire or Supyire Senoufo | Niger–Congo |
| Suret or Sureth | Afroasiatic |
| Surigaonon | Austronesian |
| Susu | Niger–Congo |
| Susuami | Trans–New Guinea |
| Suundi | Niger–Congo |
| Svan | Kartvelian |
| Swahili | Niger–Congo |
| Swati, Swazi, Siswati, or Seswati | Niger–Congo |
| Swedish | Indo-European |
| Swiss-German Sign Language | Unclassified language, possibly DGSic or Francosign |
| Sylheti | Indo-European |
| Syriac | Afroasiatic |
|
|
| Taa | Tuu |
| Tabaru | West Papuan |
| Tabasaran or Tabassaran | Northeast Caucasian |
| Tacana | Tacanan |
| Tachelhit | Afroasiatic |
| Tadaksahak | Nilo-Saharan |
| Tado | Austronesian |
| Tagalog | Austronesian |
| Tagoi | Niger–Congo |
| Tahitian | Austronesian |
| Tai Lue | Kra–Dai |
| Tainae | Trans–New Guinea |
| Taíno | Arawakan |
| Tairuma | Trans–New Guinea |
| Taita | Niger–Congo |
| Taivoan | Austronesian |
| Taiwanese Sign Language | JSLic |
| Taje | Austronesian |
| Tajik | Indo-European |
| Tajio | Austronesian |
| Takestani | Indo-European |
| Talysh | Indo-European |
| Tamil | Dravidian |
| Tanacross | Na-Dene |
| Tangut | Sino-Tibetan |
| Tangwang | Mandarin and Santa-based mixed language |
| Taos or Northern Tiwa | Tanoan–Kiowa |
| Tarahumara | Uto-Aztecan |
| Tarama | Japonic |
| Tarangan | Austronesian |
| Tarifit or Rifi or Riff Berber | Afroasiatic |
| Tarjumo | Nilo-Saharan |
| Tasawaq | Nilo-Saharan |
| Tat or Tati | Indo-European |
| Tatar or Volga Tatar | Turkic |
| Tatar, Mishar | Turkic |
| Taulil | Taulil–Butam |
| Tausug | Austronesian |
| Taveta | Niger–Congo |
| Taworta | Lakes Plain |
| Taymanitic | Afroasiatic |
| Tboli | Austronesian |
| Tebul Sign Language | Language isolate |
| Tedaga | Nilo-Saharan |
| Teduray | Austronesian |
| Tegali | Niger–Congo |
| Tehuelche or Aonikenk | Chon |
| Tela'a | Austronesian |
| Telengit | Turkic |
| Teleut | Turkic |
| Telugu | Dravidian |
| Terei | South Bougainville |
| Terêna | Arawakan |
| Terena Sign Language | Language isolate |
| Ternate | West Papuan |
| Teribe | Chibchan |
| Tetum | Austronesian |
| Tepehua | Totonacan |
| Tepehuán or O'otham | Uto-Aztecan |
| Tewa | Tanoan–Kiowa |
| Thai | Kra–Dai |
| Thamudic | Afroasiatic |
| Thao | Austronesian |
| Tharu | Indo-European |
| Tibetan, Lhasa | Sino-Tibetan |
| Ticuna | Ticuna–Yuri |
| Tigre or Xasa | Afroasiatic |
| Tigrinya | Afroasiatic |
| Tima | Niger–Congo |
| Timbisha or Panamint | Uto-Aztecan |
| Timote | Timotean |
| Tinigua | Tiniguan |
| Tiro | Niger–Congo |
| Tiv | Niger–Congo |
| Tlingit | Na-Dene |
| Toaripi | Trans–New Guinea |
| Toba Qom | Guaicuruan |
| Tobian | Austronesian |
| Tobo-Kube | Trans–New Guinea |
| Toda | Dravidian |
| Tojolab'al | Mayan |
| Tok Pisin | English-based creole |
| Tokelauan | Austronesian |
| Tol or Jicaque | Jicaquean |
| Tolaki | Austronesian |
| Tomadino | Austronesian |
| Tombelala | Austronesian |
| Tomini | Austronesian |
| Tommeginne | Northern Tasmanian |
| Tondi Songway Kiini | Nilo-Saharan |
| Tonga | Niger–Congo |
| Tongan | Austronesian |
| Tongwe | Niger–Congo |
| Topoiyo | Austronesian |
| Torlakian | Indo-European |
| Torwali or Turvali | Indo-European |
| Totoli | Austronesian |
| Totonac | Totonacan |
| Tregami | Indo-European |
| Trimuris | Foja Range |
| Trique or Triqui | Oto-Manguean |
| Tsat | Austronesian |
| Tsez or Dido | Northeast Caucasian |
| Tshiluba, Luba-Kasai, or Luba-Lulua | Niger–Congo |
| Tshwa | Khoe–Kwadi |
| Tsimshian, Coast | Tsimshianic |
| Tsimshian, Southern | Tsimshianic |
| Tsonga | Niger–Congo |
| Tsou | Austronesian |
| Tswana or Setswana | Niger–Congo |
| Tu or Monguor | Mongolic |
| Tuareg or Tamasheq | Afroasiatic |
| Tubalar | Turkic |
| Tucano | Tucanoan |
| Tuha | Turkic |
| Tukang Besi | Austronesian |
| Tulu | Dravidian |
| Tuma-Irumu | Trans–New Guinea |
| Tumbuka | Niger–Congo |
| Tuoba | Unclassified language |
| Turkish | Turkic |
| Turkish, Cypriot | Turkic |
| Turkish, Karamanli | Turkic |
| Turkish, Ottoman | Turkic |
| Turkish, Tsalka | Turkic |
| Turkish Sign Language | Language isolate |
| Turkmen | Turkic |
| Turoyo | Afroasiatic |
| Turrbal | Pama–Nyungan |
| Turumsa | Trans–New Guinea |
| Tuscan | Indo-European |
| Tuvaluan | Austronesian |
| Tuvan | Turkic |
| Tuwari | Sepik |
| Twendi | Niger–Congo |
| Tyerrernotepanner | Northeastern Tasmanian |
| Tzeltal | Mayan |
| Tzotzil | Mayan |
|
|
| Udihe or Ude or Udege | Tungusic |
| Udmurt or Votyak | Uralic |
| Ufim | Trans–New Guinea |
| Ugaritic | Afroasiatic |
| Ujir | Austronesian |
| Ukrainian | Indo-European |
| Ulada | Austronesian |
| Ulch or Olcha | Tungusic |
| Uma | Austronesian |
| Umbrian | Indo-European |
| Unserdeutsch or Rabaul Creole German | German-based creole |
| Upper Chinook | Chinookan |
| Upper Sorbian | Indo-European |
| Urdu | Indo-European |
| Uri | Trans–New Guinea |
| Uru | Uru–Chipaya |
| Urum | Turkic |
| Uruwa | Trans–New Guinea |
| Ute | Uto-Aztecan |
| Uyghur | Turkic |
| Uzbek | Turkic |
| Uzbek, Southern | Turkic |
|
|
| Vafsi | Indo-European |
| Valencian | Indo-European |
| Valencian Sign Language | Catalan Sign |
| Vanimo | Skou |
| Vanuma | Niger–Congo |
| Vasi-vari or Prasuni | Indo-European |
| Vastese | Indo-European |
| Vejoz | Matacoan |
| Venda or Tshivenda | Niger–Congo |
| Venetian | Indo-European |
| Venetic | Indo-European |
| Veps | Uralic |
| Viduna | Niger–Congo |
| Vietnamese | Austroasiatic |
| Vilela | Lule–Vilela |
| Vili | Niger–Congo |
| Volscian | Indo-European |
| Võro | Uralic |
| Votic or Votian | Uralic |
| Vute | Niger–Congo |
| Vwanji | Niger–Congo |
|
|
| Wa | Austroasiatic |
| Waalubal | Pama–Nyungan |
| Waddar | Dravidian |
| Wae Rana | Austronesian |
| Wagaydy | Wagaydyic |
| Wagiman | Language isolate |
| Wahgi | Trans–New Guinea |
| Waigali or Kalasha-Ala | Indo-European |
| Waima or Roro | Austronesian |
| Wakabunga | Pama–Nyungan |
| Wakhi | Indo-European |
| Walio | Sepik |
| Wallisian or East Uvean | Austronesian |
| Walloon | Indo-European |
| Wambaya | Mirndi |
| Wanggamala | Pama–Nyungan |
| Wankumara | Pama–Nyungan |
| Wantoat | Trans–New Guinea |
| Wapishana | Arawakan |
| Waray or Binisaya | Austronesian |
| Wari' | Chapacuran |
| Warnang or Werni | Niger–Congo |
| Warrgamay | Pama–Nyungan |
| Waru | Austronesian |
| Washo | Language isolate |
| Watubela | Austronesian |
| Wawa | Niger–Congo |
| Wawonii | Austronesian |
| Waxiang | Sino-Tibetan |
| Wayuu | Arawakan |
| Weliki | Trans–New Guinea |
| Welsh | Indo-European |
| Wenzhounese | Sino-Tibetan |
| Western Apache | Na-Dene |
| Western Dani | Trans–New Guinea |
| Western Jicaque | Jicaquean |
| Western Neo-Aramaic | Afroasiatic |
| West Polesian or Poleshuk | Indo-European |
| Woiwurrung–Taungurung | Pama–Nyungan |
| Wolane or Silt'e | Afroasiatic |
| Wolio | Austronesian |
| Wolof | Niger–Congo |
| Wom | Torricelli |
| Wotu | Austronesian |
| Wu | Sino-Tibetan |
| Wutun | Lower Yangtze Mandarin, Amdo, and Bonan-based mixed language |
| Wymysorys or Vilamovian | Indo-European |
|
|
| Xavante | Macro-Jê |
| ǁXegwi | Tuu |
| Xhosa | Niger–Congo |
| Xiang | Sino-Tibetan |
| Xiangnan Tuhua | Sino–Tibetan |
| Xibe or Sibo | Tungusic |
| Xiongnu | Unclassified language |
| Xipaya | Tupian |
| Xong | Hmong–Mien |
|
|
| Yaaku | Afroasiatic |
| Yaeyama | Japonic |
| Yaghan or Yámana | Language isolate |
| Yaghnobi | Indo-European |
| Yagua | Peba–Yaguan |
| Yagwoia | Trans–New Guinea |
| Yaka | Niger–Congo |
| Yakut or Sakha | Turkic |
| Yalarnnga | Pama–Nyungan |
| Yambes | Torricelli |
| Yami | Austronesian |
| Yandruwandha | Pama–Nyungan |
| Yankunytjatjara | Pama–Nyungan |
| Yaminawa | Panoan |
| Yanomamö | Yanomaman |
| Yanyuwa | Pama–Nyungan |
| Yapese | Austronesian |
| Yaqui | Uto-Aztecan |
| Yauma | Niger–Congo |
| Yavapai | Yuman–Cochimí |
| Yawenian or Sepik Iwam | Sepik |
| Yawiyo | Sepik |
| Yaygir | Pama–Nyungan |
| Yazdi | Indo-European |
| Yazgulyam or Yazgulami | Indo-European |
| Yeheni | Sino–Tibetan |
| Yelmek | Bulaka River |
| Ye-Maek | Koreanic |
| Yeni | Niger–Congo |
| Yi language or Nuosu | Sino-Tibetan |
| Yiddish | Indo-European |
| Yidgha | Indo-European |
| Yilan Creole Japanese | Japanese-based creole |
| Yimas | Ramu–Lower Sepik |
| Yine or Piro | Arawakan |
| Yipma | Trans–New Guinea |
| Yopno | Trans–New Guinea |
| Yokuts, Yokutsan, or Mariposa | Yokutsan |
| Yokuts, Buena Vista | Yokutsan |
| Yokuts, Delta | Yokutsan |
| Yokuts, Palewyami | Yokutsan |
| Yokuts, Tule–Kaweah | Yokutsan |
| Yokuts, Valley | Yokutsan |
| Yola | Indo-European |
| Yolŋu Sign Language | Language isolate |
| Yonaguni | Japonic |
| Yoncalla | Kalapuyan |
| Yorùbá | Niger–Congo |
| Younuo | Hmong–Mien |
| Yucatec Maya | Mayan |
| Yuchi | Language isolate |
| Yue | Sino-Tibetan |
| Yue, Cantonese | Sino-Tibetan |
| Yue, Gao–Yang | Sino-Tibetan |
| Yue, Goulou | Sino-Tibetan |
| Yue, Luo–Guang | Sino-Tibetan |
| Yue, Qin–Lian | Sino-Tibetan |
| Yue, Siyi | Sino-Tibetan |
| Yue, Taishanese | Sino-Tibetan |
| Yue, Wu–Hua | Sino-Tibetan |
| Yue, Yuehai | Sino-Tibetan |
| Yugambeh | Pama–Nyungan |
| Yugh | Yeniseian |
| Yugur, Eastern | Mongolic |
| Yugur, Western or Neo-Uygur | Turkic |
| Yui | Trans–New Guinea |
| Yukaghir, Northern or Tundra Yukaghir | Yukaghir |
| Yukaghir, Southern or Forest Yukaghir | Yukaghir |
| Yuki | Yuki–Wappo |
| Yukjin | Koreanic |
| Yupik | Eskaleut |
| Yup'ik, Central Alaskan | Eskaleut |
| Yupik, Central Siberian | Eskaleut |
| Yupik, Naukan | Eskaleut |
| Yupiltepeque | Xincan |
| Yurats | Uralic |
| Yurok | Algic |
| Yuru | Pama–Nyungan |
| Yuyu | Pama–Nyungan |
|
|
| Zaghawa | Nilo-Saharan |
| Zambian Sign Language | Unclassified language |
| Zanaki | Niger–Congo |
| Záparo | Zaparoan |
| Zapotec | Oto-Manguean |
| Zaramo | Niger–Congo |
| Zarma | Nilo-Saharan |
| Zaza or Zazaki | Indo-European |
| Zeelandic | Indo-European |
| Zhuang | Kra–Dai |
| Zigula | Niger–Congo |
| Zimba | Niger–Congo |
| Zinza | Niger–Congo |
| Zoque | Mixe–Zoque |
| Zoroastrian Dari | Indo-European |
| Zorop or Yafi | Pauwasi |
| Zulu | Niger–Congo |
| Zuñi or Zuni | Language isolate |
| Zurg or Kufra | Afroasiatic |
| Zway or Zay | Afroasiatic |
