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To be merged in with list of languages (maybe, eventually).
- Aari (Afro-Asiatic)
- Aariya (unclassified)
- Aasáx (Afro-Asiatic)
- Abadi (Malayo-Polynesian)
- Abaga (Trans-New Guinea)
- Abai Sungai (Malayo-Polynesian)
- Abanyom (Bantu)
- Abar (Bantu)
- Abau (Sepik-Ramu)
- Abaza (Northwest Caucasian)
- Abkhaz or Abkhazian (Northwest Caucasian)
- Abujmaria (Dravidian)
- Acehnese (Malayo-Polynesian)
- Adamorobe Sign Language (Signing)
- Adele (Kwa)
- Adyghe (Northwest Caucasian)
- Afar (Cushitic)
- Afrikaans (Germanic)
- Afro-Seminole Creole (English-based creole)
- Aimaq or Barbari (Iranian)
- Aini (Turkic)
- Ainu (language isolate)
- Akan (Kwa)
- Akawaio (Carib)
- Akkadian (Semitic) (extinct)
- Aklanon (Malayo-Polynesian)
- Albanian (Indo-European)
- Aleut (Eskimo-Aleut)
- Algonquin (Algonquian)
- Alemán Coloneiro (Germanic)
- Alsatian (Germanic)
- Altay (Turkic)
- Alutor (Chukotko-Kamchatkan)
- American Sign Language (Signing)
- Amharic (Semitic)
- Amorite (Semitic) (extinct)
- Anglo-Saxon or Old English (Germanic)
- Amdang (Nilo-Saharan)
- Ammonite (Semitic) (extinct)
- Andalusian (Romance)
- Angaur (Malayo-Polynesian)
- Angika (Indo-Aryan)
- Ao (Tibeto-Burman)
- A-Pucikwar (Andamanese)
- Arabic (Semitic)
- Aragonese (Romance)
- Aramaic (Semitic)
- Are (Malayo-Polynesian)
- Argobba (Semitic)
- Aromanian or Macedo-Romanian (Romance)
- Armenian (Indo-European)
- Arpitan or Francoprovençal (Romance)
- Arvanitic(Indo-European)
- Ashkenazi Hebrew (Semitic)
- Ashkun (Indo-Iranian)
- Assamese (Indo-Iranian)
- Assyrian Neo-Aramaic (Semitic)
- Ateso or Teso (Nilotic)
- Asi (Malayo-Polynesian)
- Asturian (Romance)
- Auslan (Signing)
- Avar (Northeast Caucasian)
- Avestan (Indo-Iranian)
- Awadhi (Indo-Iranian)
- Awjila (Afro-Asiatic)
- Aymara (Aymaran)
- Azerbaijani (Turkic)
- Badaga (Dravidian)
- Badeshi (Indo-Iranian)
- Bahnar (Austroasiatic)
- Bajelani (Indo-Iranian)
- Balinese (Malayo-Polynesian)
- Balochi (Indo-Iranian)
- Balti (Tibeto-Burman)
- Bambara or Bamanankan (Mande)
- Banjar (Malayo-Polynesian)
- Banyumasan (Malayo-Polynesian)
- Basaa (Bantu)
- Bashkir (Turkic)
- Basque (Isolated)
- Batak Dairi (Malayo-Polynesian)
- Batak Karo (Malayo-Polynesian)
- Batak Mandailing (Malayo-Polynesian)
- Batak Simalungun (Malayo-Polynesian)
- Batak Toba (Malayo-Polynesian)
- Bats (North Caucasian)
- Bavarian (Germanic)
- Beja (Cushitic)
- Belarusian (Slavic)
- Belhare (Tibeto-Burman)
- Bellari (Dravidian)
- Berta (Nilo-Saharan)
- Bemba (Bantu)
- Bengali (Indo-Aryan)
- Bezhta (Northeast Caucasian)
- Beothuk (unclassified) (extinct)
- Berber (Afro-Asiatic)
- Bete (Niger-Congo)
- Bété (Niger-Congo)
- Bhili (Indo-Aryan)
- Bhojpuri (Indo-Aryan)
- Bijil Neo-Aramaic (Semitic)
- Bikol (Malayo-Polynesian)
- Bikya or Furu (Bantu)
- Blackfoot (Algonquian)
- Boholano (Malayo-Polynesian)
- Bohtan Neo-Aramaic (Semitic)
- Bolgar (unclassified) (extinct)
- Bonan or Paoan (Mongolic)
- Bororo (Bororoan)
- Bosnian (Slavic)
- Brahui (Dravidian)
- Breton (Celtic)
- British Sign Language (Signing)
- Bua (Niger-Congo)
- Buginese (Malayo-Polynesian)
- Bukusu (Bantu)
- Bulgarian (Slavic)
- Bunjevac (Slavic)
- Burmese (Tibeto-Burman)
- Burushaski (language isolate)
- Buryat (Mongolic)
- Caluyanon or Caluyanun (Malayo-Polynesian)
- Camunic (unclassified) (extinct)
- Cantonese (Sinitic)
- Carian (Anatolian) (extinct)
- Catawba (Siouan) (extinct)
- Catalan (Romance)
- Cayuga (Iroquoian)
- Cebuano (Malayo-Polynesian)
- Chabacano or Chavacano (Creole)
- Chaga or Kichagga (Bantu)
- Chagatai (Turkic) (extinct)
- Chaldean Neo-Aramaic (Semitic)
- Chamorro (Malayo-Polynesian)
- Chaouia or Tachawit (Berber)
- Chechen (Northeast Caucasian)
- Chemakum (Chimakuan) (extinct)
- Chenchu (Dravidian)
- Chenoua (Berber)
- Cherokee (Iroquoian
- Cheyenne (Algonquian)
- Chhattisgarhi (Indo-Aryan)
- Chilcotin (Athabaskan)
- Chinese (Sinitic)
- Chintang or Chhintang (Tibeto-Burman)
- Chiricahua or Mescalero-Chiricahua Apache (Athabaskan)
- Chichewa or Nyanja (Bantu)
- Chipewyan (Athabaskan)
- Chittagonian (Indo-Aryan)
- Choctaw (Muskogean)
- Chorasmian or Khwarezmian (Iranian)
- Chukchi or Chukot (Chukotko-Kamchatkan)
- Chulym (Turkic)
- Church Slavonic (Slavic)
- Chuukese or Trukese (Malayo-Polynesian)
- Chuvash (Turkic)
- Cocoma or Cocama (Tupian)
- Cocopa (Hokan)
- Coeur d’Alene (Salishan)
- Comorian (Bantu)
- Coptic (Egyptian) (extinct, liturgical language)
- Cornish (Celtic)
- Corsican (Romance)
- Cree (Algonquian)
- Crimean Tatar or Crimean Turkish (Turkic)
- Croatian (Slavic)
- Cuman (Turkic) (extinct)
- Cumbric (Celtic) (extinct)
- Curonian (Baltic) (extinct)
- Cuyonon (Malayo-Polynesian)
- Czech (Slavic)
- Dacian (Indo-European) (extinct)
- Dahlik (Semitic)
- Dalecarlian (Germanic)
- Dalmatian (Romance) (extinct)
- Dameli (Indo-Aryan)
- Danish (Germanic)
- Dargin (Northeast Caucasian)
- Dari (Zoroastrian) (Iranian)
- Dari-Persian (Iranian)
- Darkhat (Mongolic)
- Daur or Dagur (Mongolic)
- Dena'ina or Tanaina (Athapaskan)
- Dhatki (Indo-Aryan)
- Dhivehi or Maldivian (Indo-Aryan)
- Dida (Volta-Congo)
- Dioula or Jula (Mande)
- Dogri (Indo-Aryan)
- Dogrib or Tli Cho (Athapaskan)
- Dolgan (Turkic)
- Domaaki or Dumaki (Indo-Aryan)
- Dongxiang or Santa (Mongolic)
- Duala (Bantu)
- Dungan (Sinitic)
- Dutch (Germanic)
- Dzhidi or Judeo-Persian (Iranian)
- Dzongkha (Tibeto-Burman)
- Eastern Yugur (Mongolic)
- Eblaite (Semitic) (extinct)
- Edomite (Semitic) (extinct)
- Egyptian (Afro-Asiatic) (extinct)
- Egyptian Arabic (Semitic)
- Ekoti (Bantu)
- Elamite (isolated) (extinct)
- Endegen (Semitic)
- Enets or Yenisey Samoyed (Samoyedic)
- English (Germanic)
- Ennemor or Inor (Semitic)
- Erzya (Finno-Ugric)
- Esperanto (artificial)
- Estonian (Finno-Ugric)
- Etruscan (Tyrsenian) (extinct)
- Even (Altaic)
- Evenk or Evenki (Altaic)
- Ewe (Volta-Congo)
- Eyak (Na-Dené)
- Faeroese (Germanic)
- Fang (Bantu)
- Fars (Iranian)
- Fijian (Malayo-Polynesian)
- Filipino (Malayo-Polynesian)
- Finnish (Finno-Ugric)
- Finnish Sign Language (Signing)
- Fon (Volta-Congo)
- Franco-Provençal (Romance)
- French (Romance)
- French Sign Language (Signing)
- Frisian (Germanic)
- Friulian (Romance)
- Fula or Fulfulde or Fulani (Atlantic)
- Fur (Nilo-Saharan)
- Ga (Volta-Congo)
- Gadaba (Dravidian)
- Gafat (Semitic) (extinct)
- Gagauz (Turkic)
- Galician (Romance)
- Gangte (Tibeto-Burman)
- Garhwali (Indo-Aryan)
- Gaulish (Celtic) (extinct)
- Gayo (Malayo-Polynesian)
- Gazi (Iranian)
- Ge'ez (Semitic) (extinct)
- Gen or Gẽ or Mina (Volta-Congo)
- Georgian (South Caucasian)
- German (Germanic)
- German Sign Language (Signing)
- Ghomara (Berber) (extinct)
- Gikuyu or Kikuyu (Bantu)
- Gilbertese or Kiribati (Malayo-Polynesian)
- Gileki (Iranian)
- Goaria (Indo-Aryan)
- Gondi (Dravidian)
- Gothic (Germanic) (extinct)
- Gawar-Bati or Gowari or Narsati (Indo-Aryan)
- Grangali or Gelangali (Indo-Aryan)
- Greek (Indo-European)
- Guanche (Berber) (extinct)
- Guaraní (Tupian)
- Gujarati (Indo-Aryan)
- Gula Iro or Kulaal (Volta-Congo)
- Gullah or Sea Island Creole English (English-based creole)
- Gusii (Bantu)
- Gwichʼin (Athabaskan)
- Hadramautic (Semitic) (extinct)
- Hadza or Hatsa (Khoisan)
- Haida or Masset (Na-Dené)
- Haitian Creole (French-based creole)
- Hakka (Sinitic)
- Hän (Athabaskan)
- Harari (Semitic)
- Harauti (Indo-Aryan)
- Harsusi (Semitic)
- Haryanavi or Haryani or Bangru (Indo-Aryan) (a dialect of Hindi)
- Harzani (Iranian)
- Hattic (unclassified, possibly Northwest Caucasian) (extinct)
- Hausa (Afro-Asiatic)
- Havasupai or Upland Yuman (Hokan)
- Hawaiian (Malayo-Polynesian)
- Hawaii Pidgin Sign Language (Signing)
- Hazaragi (Iranian) (a dialect of Persian)
- Hebrew (Semitic)
- Herero (Bantu)
- Hértevin (Semitic)
- Hiligaynon or Ilonggo (Malayo-Polynesian)
- Hindi (Indo-Aryan)
- Hiri Motu (Motu-based Pidgin)
- Hittite (Anatolian)
- Hixkaryana (Carib)
- Hmong (Hmong Mien)
- Ho (Austroasiatic)
- Hobyót (Semitic)
- Hopi (Uto-Aztecan
- Hulaulá (Semitic)
- Hungarian (Finno-Ugric)
- Hurrian (Hurro-Urartian) (extinct)
- Hutterite German (Germanic)
- Ibibio (Volta-Congo)
- Iban (Malayo-Polynesian)
- Ibanag (Malayo-Polynesian)
- Icelandic (Germanic)
- Igbo or Ibo or Biafra (Volta-Congo)
- Ikalanga or Kalanga (Bantu)
- Ili Turki (Turkic)
- Illinois (Algonquian) (extinct)
- Ilokano or Ilocano (Malayo-Polynesian)
- Inari Sami (Finno-Ugric)
- Indonesian (Malayo-Polynesian)
- Ingrian or Izhorian (Finno-Ugric)
- Ingush (Northeast Caucasian)
- Inuktitut (Eskimo-Aleut)
- Inupiaq (Eskimo-Aleut)
- Inuvialuktun (Eskimo-Aleut)
- Iraqw (Cushitic)
- Irish or Irish Gaelic (Celtic)
- Irish Sign Language (Signing)
- Irula (Dravidian)
- Isan or Northeastern Thai (Tai-Kadai)
- Istro-Romanian (Romance)
- Italian (Romance)
- Itelmen or Kamchadal (Chukotko-Kamchatkan)
- Jacaltec or Jakalteko (Mayan)
- Jalaa (unclassified, possibly Niger-Congo)
- Japanese (isolated)
- Jaqaru (Aymaran)
- Jarai (Malayo-Polynesian)
- Javanese (Malayo-Polynesian)
- Jibbali or Shehri (Semitic)
- Jicarilla Apache (Athabaskan)
- Juang (Austro-Asiatic)
- Judeo-Aramaic (Semitic) (extinct)
- Judeo-Berber (Afro-Asiatic)
- Jurchen (Tungusic) (extinct)
- Kabardian (Northwest Caucasian)
- Kabyle (Berber)
- Kachin or Jingpo (Tibeto-Burman)
- Kalaallisut or Greenlandic (Eskimo-Aleut)
- Kalami or Gawri or Dirwali (Indo-Aryan)
- Kalasha (Indo-Aryan)
- Kalmyk or Oirat (Mongolic)
- Kalto or Nahali (isolated or Indo-Aryan)
- Kamas (Samoyedic) (extinct)
- Kankanai or Kankanaey (Malayo-Polynesian)
- Kannada (Dravidian)
- Kaonde or Chikaonde (Bantu)
- Kapampangan (Malayo-Polynesian)
- Karachay-Balkar (Turkic)
- Karagas (Turkic)
- Karaim (Turkic)
- Karakalpak (Turkic)
- Karelian (Finno-Ugric)
- Kashmiri (Indo-Aryan)
- Kashubian (Slavic)
- Kawi (Malayo-Polynesian) (extinct)
- Kazakh (Turkic)
- Kemi Sami (Finno-Ugric) (extinct)
- Kensiu (Austro-Asiatic)
- Kerek (Paleosiberian)
- Ket (Chukotko-Kamchatkan)
- Khakas (Turkic)
- Khalaj (Iranian)
- Kham or Sheshi (Tibeto-Burman)
- Khandeshi (Indo-Aryan)
- Khanty or Ostyak (Finno-Ugric)
- Khasi (Austro-Asiatic)
- Khazar (probably Turkic) (extinct)
- Khirwar (Dravidian)
- Khmer (Austro-Asiatic)
- Khmu (Austro-Asiatic)
- Khowar (Indo-Aryan)
- Khunsari (Iranian)
- Kildin Sami (Baltic-Finnic)
- Kimatuumbi (Bantu)
- Kinaray-a or Hiraya (Malayo-Polynesian)
- Kinyarwanda (Bantu)
- Kirombo (Bantu)
- Kirundi (Bantu)
- Kivunjo (Bantu)
- Klallam or Clallam (Salishan)
- Kodava Takk or Kodagu or Coorgi (Dravidian)
- Kohistani or Khili (Indo-Aryan)
- Kolami (Dravidian)
- Komi or Komi-Zyrian (Finno-Ugric)
- Konda (Trans-New Guinea)
- Konkani (Indo-Aryan)
- Kongo or Kikongo (Bantu)
- Koraga (Dravidian)
- Korandje (Nilo-Saharan)
- Korean (isolated)
- Korku (Austro-Asiatic)
- Korowai (Trans-New Guinea)
- Korwa (Austro-Asiatic)
- Koryak (Chukotko-Kamchatkan)
- Kosraean (Malayo-Polynesian)
- Kota (Dravidian)
- Koyra Chiini or Western Songhay (Nilo-Saharan)
- Koy Sanjaq Surat (Semitic)
- Koya (Dravidian)
- Krymchak or Judeo-Crimean Tatar (Turkic)
- Kujarge (unclassified, perhaps Chadic)
- Kui (Dravidian)
- Kumauni (Indo-Aryan)
- Kumyk (Turkic)
- Kumzari (Iranian)
- ǃKung (Khoisan)
- Kurdish (Iranian)
- Kurukh or Kurux (Dravidian)
- Kurumba (Dravidian)
- Kusunda (Tibeto-Burman) (extinct)
- Kutenai or Kootenay or Ktunaxa (isolated)
- Kuvi (Dravidian)
- Kwanyama or Ovambo (Bantu)
- Kxoe (Khoisan)
- Kyrgyz or Kirghiz (Turkic)
- Laal (unclassified)
- Ladakhi (Tibeto-Burman)
- Ladin (Romance)
- Ladino or Judeo-Spanish (Romance)
- Lakota or Lakhota or Teton (Siouan)
- Lambadi or Lamani or Banjari (Indo-Aryan)
- Lao or Laotian (Tai-Kadai)
- Latin (Romance) (extinct, liturgical language)
- Latvian (Baltic)
- Laz or Lazuri (South Caucasian)
- Lenape or Unami or Delaware (Algonquian) (extinct)
- Lepontic (Celtic) (extinct)
- Lezgi or Agul (Northeast Caucasian)
- Ligbi or Ligby (Mande)
- Lingala (Bantu)
- Lipan Apache (Athabascan)
- Lisan al-Dawat (Indo-Aryan)
- Lishana Deni (Semitic)
- Lishanid Noshan or Lishana Didan (Semitic)
- Lithuanian (Baltic)
- Livonian or Liv (Finno-Ugric)
- Lotha (Tibeto-Burman)
- Low German or Low Saxon or Plattdeutsch (Germanic)
- Lower Sorbian (Slavic)
- Lozi or Silozi (Bantu)
- Ludic or Ludian (Finno-Ugric)
- Luganda (Bantu)
- Lunda or Chilunda (Bantu)
- Luri (Iranian)
- Lushootseed (Salishan)
- Lusoga or Soga (Bantu)
- Luvale (Bantu)
- Luwati (Indo-Iranian)
- Luwian or Luvian (Anatolian) (extinct)
- Luxembourgish (Germanic)
- Lycian (Anatolian) (extinct)
- Lydian (Anatolian) (extinct)
- Macedonian (Slavic)
- Macedonian, Ancient (Proto-Greek) (extinct)
- Magadhi (Indo-Aryan)
- Maguindanao (Malayo-Polynesian)
- Mahican (Algonquian) (extinct)
- Mahl (Indo-Aryan)
- Maithili (Indo-Aryan)
- Makasar (Malayo-Polynesian)
- Makhuwa-Meetto (Bantu)
- Makua (Bantu)
- Malagasy (Malayo-Polynesian)
- Malay (Malayo-Polynesian)
- Malayalam (Dravidian)
- Malaysian Sign Language (Signing)
- Maltese (Semitic)
- Malto or Sauria Paharia (Dravidian)
- Malvi or Malavi or Ujjaini (Indo-Aryan)
- Mam (Mayan)
- Manchurian (Tungusic)
- Manda (Dravidian)
- Mandaic (Semitic)
- Mandarin (Sinitic)
- Mandinka (Niger-Congo)
- Mansi or Vogul (Finno-Ugric)
- Manx (Celtic) (extinct)
- Manyika (Bantu)
- Maori (Malayo-Polynesian)
- Mapudungun or Mapuche (isolated)
- Maragoli (Bantu)
- Maranao (Malayo-Polynesian)
- Marathi (Indo-Aryan)
- Mari or Cheremis (Finno-Ugric)
- Maria (Dravidian)
- Marquesan (Malayo-Polynesian)
- Marshallese or Ebon (Malayo-Polynesian)
- Martha's Vineyard Sign Language (Signing)
- Masaba (Bantu)
- Masbatenyo or Minasbate (Malayo-Polynesian
- Meitei or Manipuri or Meithei (Tibeto-Burman)
- Mesqan or Masqan (Semitic)
- Mator (Samoyedic) (extinct)
- Mauritian Creole or Morisyen (French-based creole)
- Maya (Mayan)
- Mazandarani or Tabari(Iranian)
- Meänkieli or Tornedalen Finnish (Finno-Ugric)
- Megleno-Romanian (Romance)
- Megrelian or Mingrelian (South Caucasian)
- Mehri or Mahri (Semitic)
- Menominee (Algonquian)
- Mentawai (Malayo-Polynesian)
- Meroitic (unclassified, maybe Nilo-Saharan or isolated)
- Merya (Finno-Ugric) (extinct)
- Mescalero Apache (Athabaskan)
- Mesmes (Semitic) (extinct)
- Messapian (Indo-European (extinct)
- Miami (Algonquian) (extinct)
- Michif (mixed, French and Cree based)
- Middle Dutch (Germanic) (extinct)
- Middle English (Germanic) (extinct)
- Middle French (Romance) (extinct)
- Middle High German (Germanic) (extinct)
- Middle Persian or Pahlavi (Iranian) (extinct)
- Mikasuki or Miccosukee (Muskogean)
- Mi'kmaq or Micmac (Algonquian)
- Minaean (Semitic) (extinct)
- Minangkabau (Malayo-Polynesian)
- Mlahsô or Suryoyo (Semitic) (extinct)
- Moabite (Semitic) (extinct)
- Mobilian Jargon (pidgin, Choctaw and French based)
- Moghol (Mongolic)
- Mohawk (Iroquoian)
- Mohegan (Algonquian) (extinct)
- Moksha (Finno-Ugric)
- Molengue (Bantu)
- Mon (Austro-Asiatic)
- Mongolian (Mongolic)
- Mono (Volta-Congo)
- Mono (Uto-Aztecan)
- Mono (Malayo-Polynesian)
- Montagnais (Algonquian)
- Montenegrin (Slavic)
- Motu (Malayo-Polynesian)
- Mpre (unclassified, perhaps Niger-Congo or isolated) (extinct)
- Muher (Semitic)
- Mukha-Dora or Nuka (unclassified)
- Mundari (Austro-Asiatic)
- Munji (Iranian)
- Murcian (Murcian)
- Muria (Dravidian)
- Muromian (Finno-Ugric) (extinct)
- Murut (Malayo-Polynesian)
- Nafaanra (Volta-Congo)
- Nagarchal (Dravidian)
- Nahuatl (Uto-Aztecan)
- Naiki (Dravidian)
- Nama (Khoisan)
- Nanai (Tungusic)
- Natanzi (Iranian)
- Nauruan (Malayo-Polynesian)
- Navajo or Navaho (Na-Dené)
- Nayini or Biyabanak (Iranian)
- Ndau or Southeast Shona (Bantu)
- Ndebele (Bantu)
- Ndonga (Bantu)
- Neapolitan (Romance)
- Negidal (Tungusic)
- Nenets or Yurak (Samoyedic)
- Nepal Bhasa or Newari (Tibeto-Burman)
- Nepali (Indo-Aryan)
- New Zealand Sign Language (Signing)
- Nganasan or Tavgi (Samoyedic)
- Ngumba (Bantu)
- Nheengatu or Geral or Modern Tupí (Tupian)
- Nicaraguan Sign Language (Signing)
- Nicola) (Athabaskan languages) (extinct)
- Niellim (Volta-Congo)
- Nigerian Pidgin (pidgin, English-based)
- Niuean or Niue (Malayo-Polynesian)
- Nivkh or Gilyak (isolated)
- Nogai (Turkic)
- Norfuk or Norfolk or Pitcairn-Norfolk (cant, English-Tahitian based)
- Norman or Norman-French (Romance)
- Norn (Germanic) (extinct)
- Northern Sami (Finno-Ugric)
- Northern Sotho or Sepedi (Bantu)
- Northern Straits Salish) (Salishan)
- Northern Yukaghir (Yukaghir)
- Norwegian (Bokmål, Nynorsk, Riksmål) (Germanic)
- Nuer (Nilotic)
- Nuxálk or Bella Coola (Salishan)
- Nyabwa (Volta-Congo)
- Nyah Kur (Austro-Asiatic)
- Nyangumarta (Pama-Nyungan)
- Nyoro (Bantu)
- Nǀu (Khoisan)
- Occitan (Romance)
- Ojibwe or Ojibwa or Chippewa (Algonquian)
- Old Church Slavonic (Slavic) (extinct, liturgical language)
- Old English or Anglo-Saxon (Germanic) (extinct)
- Old French (Romance) (extinct)
- Old French Sign Language (Signing) (extinct)
- Old High German (Germanic) (extinct)
- Old Norse (Germanic) (extinct)
- Old Nubian language (Nilo-Saharan) (extinct)
- Old Persian (Iranian) (extinct)
- Old Prussian (Baltic) (extinct)
- Old Saxon (Germanic) (extinct)
- Old South Arabic (Semitic) (extinct)
- Old Tupi or Tupinamba (Tupian) (extinct)
- Olonets Karelian or Liv or Livvi (Finno-Ugric)
- Omagua (Tupian)
- Ongota (Afro-Asiatic)
- Oriya (Indo-Aryan)
- Ormuri (Iranian)
- Oroch (Tungusic)
- Orok (Tungusic)
- Oromo or Afaan Oromoo (Cushitic)
- Oropom (unclassified) (extinct)
- Ossetic or Ossetian (Iranian)
- Ottoman Turkish (Turkic) (extinct)
- Páez or Nasa Yuwe (isolated)
- Palaic (Anatolian) (extinct)
- Palauan (Malayo-Polynesian)
- Pali (Indo-Aryan) (extinct)
- Pangasinan (Malayo-Polynesian)
- Papiamento or Papiamentu (Portuguese-based creole)
- Parachi (Iranian)
- Parauk (Austro-Asiatic)
- Parji or Duruwa (Dravidian)
- Parya (Indo-Aryan)
- Pashto or Pushto or Pashtu (Iranian)
- Passamaquoddy or Maliseet-Passamaquoddy or Malecite-Passamaquoddy (Algonquian)
- Pecheneg (Turkic) (extinct)
- Pemon or Pemong (Cariban)
- Pengo (Dravidian)
- Pennsylvania Dutch or Pennsylvania German (Germanic)
- Pentlatch or Puntlatch (Salishan) (extinct)
- Persian or Farsi (Iranian)
- Phalura (Indo-Aryan)
- Phoenician (Semitic) (extinct)
- Phrygian (Indo-European) (extinct)
- Phuthi (Bantu)
- Picard (Romance)
- Pictish (Celtic) (extinct)
- Pirahã (Mura)
- Pisidian (Anatolian) (extinct)
- Plautdietsch or Mennonite Low German (Germanic)
- Polabian (Slavic (extinct)
- Polish (Slavic)
- Portuguese (Romance)
- Pothohari or Pahari-Potwari (Indo-Aryan)
- Potiguara (Tupian) (extinct)
- Pradhan or Pardhan (Dravidian)
- Proto-Indo-European (Indo-European) (extinct)
- Provençal (Romance)
- Puelche (isolated)
- Puma (Tibeto-Burman)
- Punjabi or Panjabi or Gurmukhi (Indo-Aryan)
- Qashqai or Ghashghai (Turkic)
- Qatabanian (Semitic) (extinct)
- Quebec Sign Language (Signing)
- Quechua (Quechuan)
- Rajasthani (Indo-Aryan)
- Ratagnon or Datagnon or Latagnun (Malayo-Polynesian)
- Réunion Creole or Bourbonnais (French-based creole)
- Romanian (Romance)
- Romansh or Rhaeto-Romance (Romance)
- Romany (Indo-Iranian)
- Romblomanon (Malayo-Polynesian)
- Rotokas (East Papuan)
- Runyankole language or Nyankore (Bantu)
- Russenorsk (Russian-Norwegian pidgin) (extinct)
- Russian (Slavic)
- Russian Sign Language (Signing)
- Ruthenian or Rusyn or Carpathian (Slavic)
- Sabaean (Semitic) (extinct)
- Salar (Turkic)
- Samaritan Hebrew (Semitic) (extinct)
- Samoan (Malayo-Polynesian)
- Sandawe (Khoisan)
- Sangisari or Sangesari (Iranian)
- Sanglechi-Ishkashimi (Iranian)
- Sango (Ngbandi-based creole)
- Sanskrit (Indo-Aryan) (extinct, liturgical language)
- Santali (Austro-Asiatic)
- Sara (Malayo-Polynesian)
- Saramaccan (English-based creole)
- Sardinian (Romance)
- Sarikoli (Iranian)
- Savara (Dravidian)
- Savi (Indo-Aryan)
- Sawai (Malayo-Polynesian)
- Sawknah (Afro-Asiatic)
- Scots (Germanic)
- Scottish Gaelic or Scots Gaelic (Celtic)
- Selangor Sign Language (Signing)
- Selkup or Ostyak Samoyed (Samoyedic)
- Selonian (Baltic) (extinct)
- Semnani (Iranian)
- Senaya (Semitic)
- Sened (Berber) (extinct)
- Senhaja de Srair (Berber) (extinct)
- Sephardi Hebrew (Semitic)
- Serbian (Slavic)
- Serbo-Croatian (Slavic)
- Sesotho (Bantu)
- Seto or Setu (Finno-Ugric)
- Seychellois Creole (French-based creole)
- Shahrudi (Iranian)
- Shimaore (Bantu)
- Shina (Indo-Aryan)
- Shona (Bantu)
- Shor (Turkic)
- Shughni (Iranian)
- Shumashti (Indo-Aryan)
- Shuswap (Salishan)
- Sicilian (Romance)
- Sidamo (Cushitic)
- Sidetic (Anatolian) (extinct)
- Sika (Malayo-Polynesian)
- Silesian (Slavic)
- Silt'e or Selti or East Gurage (Semitic)
- Sindhi (Indo-Aryan)
- Sinhalese (Indo-Aryan)
- Sioux (Siouan)
- Siraiki or Seraiki or Southern Punjabi (Indo-Aryan)
- Sivandi (Iranian)
- Siwi (Afro-Asiatic)
- Skolt Sami (Finno-Ugric)
- Slavey (Athabaskan)
- Slovak (Slavic)
- Slovenian or Slovene (Slavic)
- Soddo or Kistane (Semitic)
- Soi (Iranian)
- Somali (Cushitic)
- Sonjo or Temi (Bantu)
- Sonsorolese or Sonsorol (Malayo-Polynesian)
- Soqotri (Semitic)
- Sora (Austro-Asiatic)
- Sorbian (Slavic)
- Southern Sami (Finno-Ugric)
- South Estonian (Finno-Ugric)
- Southern Yukaghir or Tundra Yukaghir (Yukaghir)
- Spanish (Romance)
- Sranan Tongo (English-based creole)
- St'at'imcets or Lillooet (Salishan)
- Sucite or Sìcìté Sénoufo (Volta-Congo)
- Suba (Bantu)
- Sudovian or Yotvingian (Baltic) (extinct)
- Sumerian (isolated) (extinct)
- Sundanese (Malayo-Polynesian)
- Supyire or Supyire Senoufo (Volta-Congo)
- Surigaonon (Malayo-Polynesian)
- Susu (Niger-Congo)
- Svan (South Caucasian)
- Swahili (Bantu)
- Swati or Swazi or Siswati or Seswati (Bantu)
- Swedish (Germanic)
- Syriac (Semitic)
- Tabasaran or Tabassaran (Northeast Caucasian)
- Tachelhit (Berber)
- Tagalog (Malayo-Polynesian)
- Tahitian (Malayo-Polynesian)
- Taiwanese Sign Language (Signing)
- Tajik (Iranian)
- Takestani (Iranian)
- Talysh (Iranian)
- Tamil (Dravidian)
- Tanacross (Athabaskan)
- Tangut or Xixia (Tibeto-Burman) (extinct)
- Tarifit or Rifi or Riff Berber (Berber)
- Tat or Tati (Iranian)
- Tatar (Turkic)
- Tausug (Malayo-Polynesian)
- Tehuelche (Chon)
- Telugu (Dravidian)
- Temiar or Northern Sakai (Austro-Asiatic)
- Tetum (Malayo-Polynesian)
- Thai (Tai-Kadai)
- Tharu (Indo-Aryan)
- Thracian (Indo-European) (extinct)
- Tibetan (Tibeto-Burman)
- Tigre or Xasa (Semitic)
- Tigrinya (Semitic)
- Tillamook (Salishan) (extinct)
- Tirahi (Indo-Aryan)
- Tiv (Volta-Congo)
- Tlingit (Na-Dené)
- Tobian (Malayo-Polynesian)
- Tocharian A and B (Indo-European) (extinct)
- Toda (Dravidian)
- Tok Pisin (English-based creole)
- Tokelauan (Malayo-Polynesian)
- Tonga (Bantu)
- Tongan (Malayo-Polynesian)
- Tongva (Uto-Aztecan) (extinct)
- Torwali or Turvali (Indo-Aryan)
- Tregami (Indo-Aryan)
- Tsat (Malayo-Polynesian)
- Tsez or Dido (Northeast Caucasian)
- Tshiluba or Luba-Kasai or Luba-Lulua (Bantu)
- Tsimshian (Penutian)
- Tsonga (Bantu)
- Tswana or Setswana (Bantu)
- Tu or Monguor (Mongolic)
- Tuareg languages or Tamasheq (Berber)
- Tulu (Dravidian)
- Tumbuka (Bantu)
- Tupiniquim (Tupian)
- Turkish (Turkic)
- Turkmen (Turkic)
- Turoyo (Semitic)
- Tuvaluan (Malayo-Polynesian)
- Tuvan Tuvin or Tyvan (Turkic)
- Ubykh (Northwest Caucasian) (extinct)
- Udihe or Ude or Udege (Tungusic)
- Udmurt or Votyak (Finno-Ugric)
- Ugaritic (Semitic) (extinct)
- Ukrainian (Slavic)
- Ulbare (Semitic)
- Ulch or Olcha (Tungusic)
- Unserdeutsch or Rabaul Creole German (German-based creole)
- Upper Sorbian (Slavic)
- Urdu (Indic)
- Uripiv (Malayo-Polynesian)
- Urum (Turkic)
- Ute (Uto-Aztecan)
- Uyghur or Uigur (Turkic)
- Uzbek (Turkic)
- Vafsi (Iranian)
- Valencian Sign Language (Signing)
- Vasi-vari or Prasuni (Indo-Aryan)
- Venda or Tshivenda (Bantu)
- Veps (Finno-Ugric)
- Vietnamese (Austro-Asiatic)
- Võro (Finno-Ugric)
- Votic or Votian (Finno-Ugric)
- Waddar (Dravidian)
- Waigali or Kalasha-Ala (Indo-Aryan)
- Waima or Roro (Malayo-Polynesian)
- Wakhi (Iranian)
- Walloon (Romance)
- Waneci (Iranian)
- Wapishana or Aruma (Arawakan
- Waray-Waray or Binisaya (Malayo-Polynesian)
- Washo (Hokan)
- Welsh (Celtic)
- Western Neo-Aramaic (Semitic)
- Weyto (unclassified, probably Afro-Asiatic) (extinct)
- Wolane (Semitic)
- Wolof (Niger-Congo)
- Wotapuri-Katarqalai (Indo-Aryan
- Wu (Sinitic)
- ǀXam (Khoisan) (extinct)
- Xhosa (Bantu)
- Xiang (Sinitic)
- Xibe or Sibo (Tungusic)
- ǃXóõ (Khoisan)
- Xokó (unclassified) (extinct)
- Xukurú (unclassified) (extinct)
Only languages with Wikipedia pages are listed here. See List of languages by name: Y for more.
- Yaaku language
- Yaeyama language
- Yakut
- Yankunytjatjara language
- Yanomami
- Yanyuwa language
- Yapese
- Yaqui language
- Yauma language (Bantu)
- Yavapai language
- Yazdi (Iranian)
- Yemenite Hebrew language (Semitic)
- Yeni language
- Yevanic language
- Yi language
- Yiddish (Germanic)
- Yogur (also known as Yoghur, (Mongolic) Sarï Uyghur, and (Mongolic) Yellow Uyghur, Mongolic)
- Yokutsan languages
- Yonaguni language
- Yorùbá language
- Yucatec Maya language
- Yucatec Maya Sign Language (Signing)
- Yuchi language
- Yugur (also known as Yughur, (Turkicic) Sarïgh Uyghur, and (Turkic) Yellow Uyghur, Turkic)
- Yukaghir languages
- Yupik language (Eskimo-Aleut)
- Yurats language
- Yurok language
Only some major languages are listed here. See List of languages by name: Z for about 50 more.
- Záparo (Saparoan)
- Zapotec (Oto-Manguean)
- Zazaki (Iranian)
- Zhuang (Tai-Kadai)
- Zoque (Mixe-Zoquean)
- Zulu (Niger-Congo) (Bantu)
- Zuñi or Zuni (isolated)
- Zway or Zay (Semitic)