From Valve Developer Community
Language codes
| Code
|
Language
|
| aa
|
Afar
|
| ab
|
Abkhazian
|
| ace
|
Achinese
|
| ady
|
Adyghe
|
| ady-cyrl
|
Adyghe (Cyrillic)
|
| aeb
|
Tunisian Arabic
|
| aeb-arab
|
Tunisian Arabic (Arabic)
|
| aeb-latn
|
Tunisian Arabic (Latin)
|
| af
|
Afrikaans
|
| ak
|
Akan
|
| aln
|
Gheg Albanian
|
| als
|
Swiss German
|
| am
|
Amharic
|
| an
|
Aragonese
|
| ang
|
Old English
|
| anp
|
Angika
|
| ar
|
Arabic
|
| arc
|
Imperial Aramaic
|
| arn
|
Mapudungun
|
| arq
|
Algerian Arabic
|
| ary
|
Moroccan Arabic
|
| arz
|
Egyptian Arabic
|
| as
|
Assamese
|
| ase
|
American Sign Language
|
| ast
|
Asturian
|
| atj
|
Atikamekw
|
| av
|
Avaric
|
| avk
|
Kotava
|
| awa
|
Awadhi
|
| ay
|
Aymara
|
| az
|
Azerbaijani
|
| azb
|
South Azerbaijani
|
| ba
|
Bashkir
|
| ban
|
Balinese
|
| bar
|
Bavarian
|
| bat-smg
|
Samogitian
|
| bbc
|
Batak Toba
|
| bbc-latn
|
Batak Toba (Latin)
|
| bcc
|
Southern Balochi
|
| bcl
|
Central Bikol
|
| be
|
Belarusian
|
| be-tarask
|
Belarusian (Taraškievica)
|
| be-x-old
|
Belarusian (Taraškievica)
|
| bg
|
Bulgarian
|
| bgn
|
Western Balochi
|
| bh
|
Bihari languages
|
| bho
|
Bhojpuri
|
| bi
|
Bislama
|
| bjn
|
Banjar
|
| bm
|
Bambara
|
| bn
|
Bengali
|
| bo
|
Tibetan
|
| bpy
|
Bishnupriya
|
| bqi
|
Bakhtiari
|
| br
|
Breton
|
| brh
|
Brahui
|
| bs
|
Bosnian
|
| bto
|
Rinconada Bikol
|
| bug
|
Buginese
|
| bxr
|
Russian Buriat
|
| ca
|
Catalan
|
| cbk-zam
|
Chavacano
|
| cdo
|
Min Dong Chinese
|
| ce
|
Chechen
|
| ceb
|
Cebuano
|
| ch
|
Chamorro
|
| cho
|
Choctaw
|
| chr
|
Cherokee
|
| chy
|
Cheyenne
|
| ckb
|
Central Kurdish
|
| co
|
Corsican
|
| cps
|
Capiznon
|
| cr
|
Cree
|
| crh
|
Crimean Tatar
|
| crh-cyrl
|
Crimean Tatar (Cyrillic)
|
| crh-latn
|
Crimean Tatar (Latin)
|
| cs
|
Czech
|
| csb
|
Kashubian
|
| cu
|
Church Slavic
|
| cv
|
Chuvash
|
| cy
|
Welsh
|
| da
|
Danish
|
| de
|
German
|
| de-at
|
Austrian German
|
| de-ch
|
Swiss High German
|
| de-formal
|
German (formal)
|
| din
|
Dinka
|
| diq
|
Dimli
|
| dsb
|
Lower Sorbian
|
| dtp
|
Kadazan Dusun
|
| dty
|
Dotyali
|
| dv
|
Dhivehi
|
| dz
|
Dzongkha
|
| ee
|
Ewe
|
| egl
|
Emilian
|
| el
|
Greek
|
| eml
|
Emilian
|
| en
|
English
|
| en-ca
|
Canadian English
|
| en-gb
|
British English
|
| eo
|
Esperanto
|
| es
|
Spanish
|
| es-formal
|
Spanish (formal)
|
| et
|
Estonian
|
| eu
|
Basque
|
| ext
|
Extremaduran
|
| fa
|
Persian
|
| ff
|
Fulah
|
| fi
|
Finnish
|
| fit
|
Tornedalen Finnish
|
| fiu-vro
|
Võro
|
| fj
|
Fijian
|
| fo
|
Faroese
|
| fr
|
French
|
| frc
|
Cajun French
|
| frp
|
Arpitan
|
| frr
|
Northern Frisian
|
| fur
|
Friulian
|
| fy
|
Western Frisian
|
| ga
|
Irish
|
| gag
|
Gagauz
|
| gan
|
Gan Chinese
|
| gan-hans
|
simplified Gan Chinese
|
| gan-hant
|
traditional Gan Chinese
|
| gcr
|
Guianese Creole French
|
| gd
|
Scottish Gaelic
|
| gl
|
Galician
|
| glk
|
Gilaki
|
| gn
|
Guarani
|
| gom
|
Goan Konkani
|
| gom-deva
|
Goan Konkani (Devanagari)
|
| gom-latn
|
Goan Konkani (Latin)
|
| gor
|
Gorontalo
|
| got
|
Gothic
|
| grc
|
Ancient Greek
|
| gsw
|
Swiss German
|
| gu
|
Gujarati
|
| gv
|
Manx
|
| ha
|
Hausa
|
| hak
|
Hakka Chinese
|
| haw
|
Hawaiian
|
| he
|
Hebrew
|
| hi
|
Hindi
|
| hif
|
Fiji Hindi
|
| hif-latn
|
Fiji Hindi (Latin)
|
| hil
|
Hiligaynon
|
| ho
|
Hiri Motu
|
| hr
|
Croatian
|
| hrx
|
Hunsrik
|
| hsb
|
Upper Sorbian
|
| ht
|
Haitian
|
| hu
|
Hungarian
|
| hu-formal
|
Hungarian (formal)
|
| hy
|
Armenian
|
| hz
|
Herero
|
| ia
|
Interlingua
|
| id
|
Indonesian
|
| ie
|
Interlingue
|
| ig
|
Igbo
|
| ii
|
Sichuan Yi
|
| ik
|
Inupiaq
|
| ike-cans
|
Eastern Canadian Inuktitut (Unified Canadian Aboriginal Syllabics)
|
| ike-latn
|
Eastern Canadian Inuktitut (Latin)
|
| ilo
|
Iloko
|
| inh
|
Ingush
|
| io
|
Ido
|
| is
|
Icelandic
|
| it
|
Italian
|
| iu
|
Inuktitut
|
| ja
|
Japanese
|
| jam
|
Jamaican Creole English
|
| jbo
|
Lojban
|
| jut
|
Jutish
|
| jv
|
Javanese
|
| ka
|
Georgian
|
| kaa
|
Kara-Kalpak
|
| kab
|
Kabyle
|
| kbd
|
Kabardian
|
| kbd-cyrl
|
Kabardian (Cyrillic)
|
| kbp
|
Kabiyè
|
| kg
|
Kongo
|
| khw
|
Khowar
|
| ki
|
Kikuyu
|
| kiu
|
Kirmanjki
|
| kj
|
Kuanyama
|
| kk
|
Kazakh
|
| kk-arab
|
Kazakh (Arabic)
|
| kk-cn
|
Chinese Kazakh
|
| kk-cyrl
|
Kazakh (Cyrillic)
|
| kk-kz
|
Kazakhstani Kazakh
|
| kk-latn
|
Kazakh (Latin)
|
| kk-tr
|
Turkish Kazakh
|
| kl
|
Kalaallisut
|
| km
|
Khmer
|
| kn
|
Kannada
|
| ko
|
Korean
|
| ko-kp
|
North Korean
|
| koi
|
Komi-Permyak
|
| kr
|
Kanuri
|
| krc
|
Karachay-Balkar
|
| kri
|
Krio
|
| krj
|
Kinaray-A
|
| krl
|
Karelian
|
| ks
|
Kashmiri
|
| ks-arab
|
Kashmiri (Arabic)
|
| ks-deva
|
Kashmiri (Devanagari)
|
| ksh
|
Kölsch
|
| ku
|
Kurdish
|
| ku-arab
|
Kurdish (Arabic)
|
| ku-latn
|
Kurdish (Latin)
|
| kum
|
Kumyk
|
| kv
|
Komi
|
| kw
|
Cornish
|
| ky
|
Kirghiz
|
| la
|
Latin
|
| lad
|
Ladino
|
| lb
|
Luxembourgish
|
| lbe
|
Lak
|
| lez
|
Lezghian
|
| lfn
|
Lingua Franca Nova
|
| lg
|
Ganda
|
| li
|
Limburgan
|
| lij
|
Ligurian
|
| liv
|
Liv
|
| lki
|
Laki
|
| lmo
|
Lombard
|
| ln
|
Lingala
|
| lo
|
Lao
|
| loz
|
Lozi
|
| lrc
|
Northern Luri
|
| lt
|
Lithuanian
|
| ltg
|
Latgalian
|
| lus
|
Lushai
|
| luz
|
Southern Luri
|
| lv
|
Latvian
|
| lzh
|
Literary Chinese
|
| lzz
|
Laz
|
| mai
|
Maithili
|
| map-bms
|
Banyumasan
|
| mdf
|
Moksha
|
| mg
|
Malagasy
|
| mh
|
Marshallese
|
| mhr
|
Eastern Mari
|
| mi
|
Maori
|
| min
|
Minangkabau
|
| mk
|
Macedonian
|
| ml
|
Malayalam
|
| mn
|
Mongolian
|
| mo
|
Moldovan Romanian
|
| mr
|
Marathi
|
| mrj
|
Western Mari
|
| ms
|
Malay
|
| mt
|
Maltese
|
| mus
|
Creek
|
| mwl
|
Mirandese
|
| my
|
Burmese
|
| myv
|
Erzya
|
| mzn
|
Mazanderani
|
| na
|
Nauru
|
| nah
|
Nahuatl languages
|
| nan
|
Min Nan Chinese
|
| nap
|
Neapolitan
|
| nb
|
Norwegian Bokmål
|
| nds
|
Low German
|
| nds-nl
|
Netherlands Low German
|
| ne
|
Nepali
|
| new
|
Newari
|
| ng
|
Ndonga
|
| niu
|
Niuean
|
| nl
|
Dutch
|
| nl-informal
|
Dutch (informal)
|
| nn
|
Norwegian Nynorsk
|
| no
|
Norwegian
|
| nov
|
Novial
|
| nrm
|
Jèrriais
|
| nso
|
Pedi
|
| nv
|
Navajo
|
| ny
|
Nyanja
|
| nys
|
Nyungar
|
| oc
|
Occitan
|
| olo
|
Livvi
|
| om
|
Oromo
|
| or
|
Odia
|
| os
|
Ossetian
|
| pa
|
Panjabi
|
| pag
|
Pangasinan
|
| pam
|
Pampanga
|
| pap
|
Papiamento
|
| pcd
|
Picard
|
| pdc
|
Pennsylvania German
|
| pdt
|
Plautdietsch
|
| pfl
|
Pfaelzisch
|
| pi
|
Pali
|
| pih
|
Pitcairn-Norfolk
|
| pl
|
Polish
|
| pms
|
Piemontese
|
| pnb
|
Western Panjabi
|
| pnt
|
Pontic
|
| prg
|
Prussian
|
| ps
|
Pushto
|
| pt
|
Portuguese
|
| pt-br
|
Brazilian Portuguese
|
| qu
|
Quechua
|
| qug
|
Chimborazo Highland Quichua
|
| rgn
|
Romagnol
|
| rif
|
Tarifit
|
| rm
|
Romansh
|
| rmy
|
Vlax Romani
|
| rn
|
Rundi
|
| ro
|
Romanian
|
| roa-rup
|
Macedo-Romanian
|
| roa-tara
|
Tarantino
|
| ru
|
Russian
|
| rue
|
Rusyn
|
| rup
|
Macedo-Romanian
|
| ruq
|
Megleno Romanian
|
| ruq-cyrl
|
Megleno Romanian (Cyrillic)
|
| ruq-latn
|
Megleno Romanian (Latin)
|
| rw
|
Kinyarwanda
|
| sa
|
Sanskrit
|
| sah
|
Yakut
|
| sat
|
Santali
|
| sc
|
Sardinian
|
| scn
|
Sicilian
|
| sco
|
Scots
|
| sd
|
Sindhi
|
| sdc
|
Sassarese Sardinian
|
| sdh
|
Southern Kurdish
|
| se
|
Northern Sami
|
| sei
|
Seri
|
| ses
|
Koyraboro Senni Songhai
|
| sg
|
Sango
|
| sgs
|
Samogitian
|
| sh
|
Serbo-Croatian
|
| shi
|
Tachelhit
|
| shi-latn
|
Tachelhit (Latin)
|
| shi-tfng
|
Tachelhit (Tifinagh)
|
| shn
|
Shan
|
| si
|
Sinhala
|
| simple
|
simple English
|
| sk
|
Slovak
|
| skr
|
Saraiki
|
| skr-arab
|
Saraiki (Arabic)
|
| sl
|
Slovenian
|
| sli
|
Lower Silesian
|
| sm
|
Samoan
|
| sma
|
Southern Sami
|
| sn
|
Shona
|
| so
|
Somali
|
| sq
|
Albanian
|
| sr
|
Serbian
|
| sr-ec
|
Serbian (Cyrillic)
|
| sr-el
|
Serbian (Latin)
|
| srn
|
Sranan Tongo
|
| ss
|
Swati
|
| st
|
Southern Sotho
|
| stq
|
Saterfriesisch
|
| sty
|
Siberian Tatar
|
| su
|
Sundanese
|
| sv
|
Swedish
|
| sw
|
Swahili
|
| szl
|
Silesian
|
| ta
|
Tamil
|
| tay
|
Atayal
|
| tcy
|
Tulu
|
| te
|
Telugu
|
| tet
|
Tetum
|
| tg
|
Tajik
|
| tg-cyrl
|
Tajik (Cyrillic)
|
| tg-latn
|
Tajik (Latin)
|
| th
|
Thai
|
| ti
|
Tigrinya
|
| tk
|
Turkmen
|
| tl
|
Tagalog
|
| tly
|
Talysh
|
| tn
|
Tswana
|
| to
|
Tongan
|
| tpi
|
Tok Pisin
|
| tr
|
Turkish
|
| tru
|
Turoyo
|
| ts
|
Tsonga
|
| tt
|
Tatar
|
| tt-cyrl
|
Tatar (Cyrillic)
|
| tt-latn
|
Tatar (Latin)
|
| tum
|
Tumbuka
|
| tw
|
Twi
|
| ty
|
Tahitian
|
| tyv
|
Tuvinian
|
| tzm
|
Central Atlas Tamazight
|
| udm
|
Udmurt
|
| ug
|
Uighur
|
| ug-arab
|
Uighur (Arabic)
|
| ug-latn
|
Uighur (Latin)
|
| uk
|
Ukrainian
|
| ur
|
Urdu
|
| uz
|
Uzbek
|
| uz-cyrl
|
Uzbek (Cyrillic)
|
| uz-latn
|
Uzbek (Latin)
|
| ve
|
Venda
|
| vec
|
Venetian
|
| vep
|
Veps
|
| vi
|
Vietnamese
|
| vls
|
Vlaams
|
| vmf
|
Mainfränkisch
|
| vo
|
Volapük
|
| vot
|
Votic
|
| vro
|
Võro
|
| wa
|
Walloon
|
| war
|
Waray
|
| wo
|
Wolof
|
| wuu
|
Wu Chinese
|
| xal
|
Kalmyk
|
| xh
|
Xhosa
|
| xmf
|
Mingrelian
|
| yi
|
Yiddish
|
| yo
|
Yoruba
|
| yue
|
Yue Chinese
|
| za
|
Zhuang
|
| zea
|
Zeeuws
|
| zh
|
Chinese
|
| zh-classical
|
Literary Chinese
|
| zh-cn
|
Chinese (Mainland China)
|
| zh-hans
|
simplified Chinese
|
| zh-hant
|
traditional Chinese
|
| zh-hk
|
Hong Kong Chinese
|
| zh-min-nan
|
Min Nan Chinese
|
| zh-mo
|
Macao Chinese
|
| zh-my
|
Malaysian Chinese
|
| zh-sg
|
Singaporean Chinese
|
| zh-tw
|
Taiwanese Mandarin
|
| zh-yue
|
Cantonese
|
| zu
|
Zulu
|
