- alt - Southern Altai
- arc - Official Aramaic (700-300 BCE)
- aar - Afar
- abk - Abkhazian
- ace - Achinese
- ach - Acoli
- ada - Adangme
- ady - Adyghe
- afa - Afro-Asiatic languages
- afh - Afrihili
- afr - Afrikaans
- ain - Ainu (Japan)
- aka - Akan
- akk - Akkadian
- alb / sqi - Albanian
- ale - Aleut
- alg - Algonquian languages
- amh - Amharic
- ang - Old English (ca. 450-1100)
- anp - Angika
- apa - Apache languages
- ara - Arabic
- arg - Aragonese
- arm / hye - Armenian
- arn - Mapudungun
- arp - Arapaho
- art - Artificial languages
- arw - Arawak
- asm - Assamese
- ast - Asturian
- ath - Athapascan languages
- aus - Australian languages
- ava - Avaric
- ave - Avestan
- awa - Awadhi
- aym - Aymara
- aze - Azerbaijani
- map - Austronesian languages
- tut - Altaic languages
- cai - Central American Indian languages
- cpe - Creoles and pidgins, English based
- cpf - Creoles and pidgins, French-based
- cpp - Creoles and pidgins, Portuguese-based
- crp - Creoles and pidgins
- gba - Gbaya (Central African Republic)
- grc - Greek, Ancient
- ina - Interlingua (International Auxiliary Language Association)
- nai - North American Indian languages
- sai - South American Indian (Other)
- sam - Samaritan Aramaic
- bad - Banda languages
- bai - Bamileke languages
- bak - Bashkir
- bal - Baluchi
- bam - Bambara
- ban - Balinese
- baq / eus - Basque
- bas - Basa (Cameroon)
- bat - Baltic languages
- bej - Beja
- bel - Belarusian
- bem - Bemba (Zambia)
- ben - Bengali
- ber - Berber languages
- bih - Bihari languages
- bis - Bislama
- bla - Siksika
- bnt - Bantu (Other)
- bos - Bosnian
- bra - Braj
- btk - Batak languages
- bua - Buriat
- bul - Bulgarian
- bur / mya - Burmese
- cad - Caddo
- car - Galibi Carib
- cat - Catalan
- cau - Caucasian languages
- ceb - Cebuano
- cel - Celtic languages
- cha - Chamorro
- chb - Chibcha
- chg - Chagatai
- chm - Mari (Russia)
- chn - Chinook jargon
- cho - Choctaw
- chp - Chipewyan
- chu - Church Slavic
- chu - Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic
- chv - Chuvash
- cmc - Chamic languages
- cos - Corsican
- crh - Crimean Tatar
- csb - Kashubian
- cus - Cushitic languages
- dak - Dakota
- dan - Danish
- dar - Dargwa
- day - Land Dayak languages
- del - Delaware
- den - Slave (Athapascan)
- din - Dinka
- div - Dhivehi
- div - Maldivian
- doi - Dogri (macrolanguage)
- dra - Dravidian languages
- dsb - Lower Sorbian
- dua - Duala
- dum - Middle Dutch (ca. 1050-1350)
- dyu - Dyula
- dzo - Dzongkha
- egy - Egyptian (Ancient)
- eka - Ekajuk
- elx - Elamite
- epo - Esperanto
- est - Estonian
- fan - Fang
- fao - Faroese
- fat - Fanti
- fij - Fijian
- fiu - Finno-Ugrian languages
- fre / fra - French
- frm - Middle French (ca. 1400-1600)
- fro - Old French (842-ca. 1400)
- frr - Frisian, Northern
- frs - Frisian, Eastern
- fry - Western Frisian
- ful - Fulah
- fur - Friulian
- gaa - Ga
- gay - Gayo
- gem - Germanic languages
- geo / kat - Georgian
- ger / deu - German
- gil - Kiribati
- gla - Gaelic, Scottish
- gla - Scottish Gaelic
- gle - Gaelic, Irish
- glg - Galician
- glv - Manx
- gmh - Middle High German (ca. 1050-1500)
- goh - Old High German (ca. 750-1050)
- gor - Gorontalo
- grn - Guarani
- gsw - Swiss German
- guj - Gujarati
- hai - Haida
- hat - Haitian Creole French
- hat - Haitian; Haitian Creole
- hau - Hausa
- haw - Hawaiian
- hil - Hiligaynon
- him - Himachali languages; Western Pahari languages
- hrv - Croatian
- hsb - Upper Sorbian
- hun - Hungarian
- hup - Hupa
- iba - Iban
- ice / isl - Icelandic
- iii - Sichuan Yi
- iii - Sichuan Yi; Nuosu
- ijo - Ijo languages
- ile - Interlingue
- ile - Interlingue; Occidental
- ilo - Ilocano
- inc - Indic languages
- ind - Indonesian
- ine - Indo-European languages
- ipk - Inupiaq
- ira - Iranian languages
- iro - Iroquoian languages
- ita - Italian
- jav - Javanese
- jbo - Lojban
- jpn - Japanese
- jrb - Judeo-Arabic
- kaa - Karakalpak
- kab - Kabyle
- kac - Jingpho
- kal - Inuktitut, Greenlandic
- kal - Kalaallisut; Greenlandic
- kam - Kamba
- kan - Kannada
- kar - Karen languages
- kas - Kashmiri
- kau - Kanuri
- kaw - Kawi
- kaz - Kazakh
- kbd - Kabardian
- kha - Khasi
- khi - Khoisan languages
- khm - Khmer, Central
- kho - Khotanese
- kin - Kinyarwanda
- kok - Konkani (macrolanguage)
- kor - Korean
- kos - Kosraean
- krc - Karachay-Balkar
- krl - Karelian
- kro - Kru languages
- kua - Kuanyama; Kwanyama
- kua - Kwanyama
- kut - Kutenai
- lad - Ladino
- lah - Lahnda
- lam - Lamba
- lao - Lao
- lat - Latin
- lav - Latvian
- lim - Limburgan
- lim - Limburgan; Limburger; Limburgish
- lin - Lingala
- lit - Lithuanian
- lua - Luba-Kasai
- lub - Luba-Katanga
- lug - Ganda
- lun - Lunda
- mac / mkd - Macedonian
- mad - Madura
- mag - Magahi
- mah - Marshallese
- mai - Maithili
- mak - Makasar
- mal - Malayalam
- man - Mandingo
- mao / mri - Maori
- mar - Marathi
- mas - Maasai
- may / msa - Malay
- may / msa - Malay (macrolanguage)
- mdf - Moksha
- mdr - Mandar
- mga - Middle Irish (900-1200)
- mic - Micmac
- min - Minangkabau
- mis - Uncoded languages
- mkh - Mon-Khmer languages
- mlg - Malagasy
- mlt - Maltese
- mnc - Manchu
- mno - Manobo languages
- moh - Mohawk
- mon - Mongolian
- mul - Multiple languages
- mun - Munda languages
- mwl - Miranda do Douro
- mwr - Marwari
- myn - Mayan languages
- myv - Erzya
- nah - Nahuatl languages
- nap - Napoletano-Calabrese
- nau - Nauruan
- nav - Navajo
- nav - Navajo; Navaho
- ndo - Ndonga
- nds - Low German
- nep - Nepali
- new - Newar
- nia - Nias
- nic - Niger-Kordofanian languages
- nno - Norwegian Nynorsk
- nno - Norwegian Nynorsk; Nynorsk, Norwegian
- nob - Bokmål, Norwegian; Norwegian Bokmål
- nob - Norwegian Bokmål
- nog - Nogai
- nor - Norwegian
- nub - Nubian languages
- nwc - Classical Newari
- nya - Nyanja
- nym - Nyamwezi
- nyn - Nyankole
- nzi - Nzima
- oci - Occitan (post 1500)
- oji - Ojibwa
- ori - Oriya
- osa - Osage
- oss - Ossetian
- oss - Ossetian; Ossetic
- ota - Ottoman Turkish (1500-1928)
- oto - Otomian languages
- paa - Papuan languages
- pag - Pangasinan
- pal - Pahlavi
- pam - Pampanga
- pan - Panjabi
- pan - Panjabi; Punjabi
- pap - Papiamento
- pau - Palauan
- peo - Old Persian (ca. 600-400 B.C.)
- per / fas - Persian
- phi - Philippine languages
- phn - Phoenician
- pli - Pali
- pon - Pohnpeian
- pra - Prakrit languages
- pro - Old Provençal (to 1500)
- pus - Pushto
- pus - Pushto; Pashto
- que / que - Quechua
- raj - Rajasthani
- rap - Rapanui
- rar - Rarotongan
- roa - Romance languages
- roh - Romansh
- rom - Romany
- rum / ron - Romanian
- rup - Macedo-Romanian
- rus - Russian
- sad - Sandawe
- sag - Sango
- sah - Yakut
- sal - Salishan languages
- san - Sanskrit
- sas - Sasak
- sat - Santali
- scn - Sicilian
- sem - Semitic languages
- sga - Old Irish (to 900)
- sgn - Sign Languages
- shn - Shan
- sid - Sidamo
- sin - Sinhala
- sin - Sinhala; Sinhalese
- sio - Siouan languages
- sit - Sino-Tibetan languages
- sla - Slavic languages
- slo / slk - Slovak
- slv - Slovenian
- sma - Southern Sami
- sme - Northern Sami
- smi - Sami languages
- smj - Lule Sami
- smn - Inari Sami
- smo - Samoan
- sms - Skolt Sami
- sna - Shona
- sog - Sogdian
- som - Somali
- son - Songhai languages
- spa - Spanish
- srd - Sardinian
- srn - Sranan Tongo
- srp - Serbian
- ssa - Nilo-Saharan languages
- ssw - Swati
- suk - Sukuma
- sun - Sundanese
- sux - Sumerian
- swa - Swahili
- swa - Swahili (macrolanguage)
- syc - Classical Syriac
- syr - Syriac
- tah - Tahitian
- tai - Tai languages
- tam - Tamil
- tat - Tatar
- tgk - Tajik
- tgl - Tagalog
- tha - Thai
- tib / bod - Tibetan
- tir - Tigrinya
- tkl - Tokelau
- tmh - Tamashek
- tog - Tonga (Nyasa)
- ton - Tonga (Tonga Islands)
- tsi - Tsimshian
- tsn - Tswana
- tso - Tsonga
- tum - Tumbuka
- tup - Tupi languages
- tvl - Tuvalu
- tyv - Tuvinian
- uga - Ugaritic
- ukr - Ukrainian
- vai - Vai
- ven - Venda
- vie - Vietnamese
- vol - Volapük
- wak - Wakashan languages
- wal - Wolaytta
- war - Waray (Philippines)
- was - Washo
- wen - Sorbian languages
- wln - Walloon
- xal - Kalmyk-Oirat
- xho - Xhosa
- yao - Yao
- yap - Yapese
- yor - Yoruba
- ypk - Yupik languages
- zap - Zapotec
- zen - Zenaga
- zha - Zhuang
- zha - Zhuang; Chuang
- znd - Zande languages
- zza - Zaza