La ISO 639: Norma internacional para los códigos de idioma, tiene el propósito de establecer códigos reconocidos internacionalmente (ya sea 2, 3, o 4 letras de largo) para la representación de las lenguas o familias lingüísticas.
| Codigo | Descripción |
|---|---|
| aa | Afar |
| AA | Afar |
| ab | Abkhazian |
| AB | Abkhazian |
| ae | Avestan |
| AE | Avestan |
| af | Afrikaans |
| AF | Afrikaans |
| ak | Akan |
| AK | Akan |
| am | Amharic |
| AM | Amharic |
| an | Aragonese |
| AN | Aragonese |
| ar | Arabic |
| AR | Arabic |
| as | Assamese |
| AS | Assamese |
| av | Avaric |
| AV | Avaric |
| ay | Aymara |
| AY | Aymara |
| az | Azerbaijani |
| AZ | Azerbaijani |
| ba | Bashkir |
| BA | Bashkir |
| be | Belarusian |
| BE | Belarusian |
| bg | Bulgarian |
| BG | Bulgarian |
| bh | Bihari languages |
| BH | Bihari languages |
| bi | Bislama |
| BI | Bislama |
| bm | Bambara |
| BM | Bambara |
| bn | Bengali |
| BN | Bengali |
| bo | Tibetan |
| BO | Tibetan |
| br | Breton |
| BR | Breton |
| bs | Bosnian |
| BS | Bosnian |
| ca | Catalan; Valencian |
| CA | Catalan; Valencian |
| ce | Chechen |
| CE | Chechen |
| ch | Chamorro |
| CH | Chamorro |
| co | Corsican |
| CO | Corsican |
| cr | Cree |
| CR | Cree |
| cs | Czech |
| CS | Czech |
| cu | Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic |
| CU | Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic |
| cv | Chuvash |
| CV | Chuvash |
| cy | Welsh |
| CY | Welsh |
| da | Danish |
| DA | Danish |
| de | German |
| DE | German |
| dv | Divehi; Dhivehi; Maldivian |
| DV | Divehi; Dhivehi; Maldivian |
| dz | Dzongkha |
| DZ | Dzongkha |
| ee | Ewe |
| EE | Ewe |
| el | Greek; Modern (1453-) |
| EL | Greek; Modern (1453-) |
| en | English |
| EN | English |
| eo | Esperanto |
| EO | Esperanto |
| es | Spanish; Castilian |
| ES | Spanish; Castilian |
| et | Estonian |
| ET | Estonian |
| eu | Basque |
| EU | Basque |
| fa | Persian |
| FA | Persian |
| ff | Fulah |
| FF | Fulah |
| fi | Finnish |
| FI | Finnish |
| fj | Fijian |
| FJ | Fijian |
| fo | Faroese |
| FO | Faroese |
| fr | French |
| FR | French |
| fy | Western Frisian |
| FY | Western Frisian |
| ga | Irish |
| GA | Irish |
| gd | Gaelic; Scottish Gaelic |
| GD | Gaelic; Scottish Gaelic |
| gl | Galician |
| GL | Galician |
| gn | Guarani |
| GN | Guarani |
| gu | Gujarati |
| GU | Gujarati |
| gv | Manx |
| GV | Manx |
| ha | Hausa |
| HA | Hausa |
| he | Hebrew |
| HE | Hebrew |
| hi | Hindi |
| HI | Hindi |
| ho | Hiri Motu |
| HO | Hiri Motu |
| hr | Croatian |
| HR | Croatian |
| ht | Haitian; Haitian Creole |
| HT | Haitian; Haitian Creole |
| hu | Hungarian |
| HU | Hungarian |
| hy | Armenian |
| HY | Armenian |
| hz | Herero |
| HZ | Herero |
| ia | Interlingua (International Auxiliary Language Association) |
| IA | Interlingua (International Auxiliary Language Association) |
| id | Indonesian |
| ID | Indonesian |
| ie | Interlingue; Occidental |
| IE | Interlingue; Occidental |
| ig | Igbo |
| IG | Igbo |
| ii | Sichuan Yi; Nuosu |
| II | Sichuan Yi; Nuosu |
| ik | Inupiaq |
| IK | Inupiaq |
| io | Ido |
| IO | Ido |
| is | Icelandic |
| IS | Icelandic |
| it | Italian |
| IT | Italian |
| iu | Inuktiut |
| IU | Inuktiut |
| ja | Japanese |
| JA | Japanese |
| jv | Javanese |
| JV | Javanese |
| ka | Georgian |
| KA | Georgian |
| kg | Kongo |
| KG | Kongo |
| ki | Kikuyu; Gikuyu |
| KI | Kikuyu; Gikuyu |
| kj | Kuanyama; Kwanyama |
| KJ | Kuanyama; Kwanyama |
| kk | Kazakh |
| KK | Kazakh |
| kl | Kalaallisut; Greenlandic |
| KL | Kalaallisut; Greenlandic |
| km | Central Khmer |
| KM | Central Khmer |
| kn | Kannada |
| KN | Kannada |
| ko | Korean |
| KO | Korean |
| kr | Kanuri |
| KR | Kanuri |
| ks | Kashmiri |
| KS | Kashmiri |
| ku | Kurdish |
| KU | Kurdish |
| kv | Komi |
| KV | Komi |
| kw | Cornish |
| KW | Cornish |
| ky | Kirghiz; Kyrgyz |
| KY | Kirghiz; Kyrgyz |
| la | Latin |
| LA | Latin |
| lb | Luxembourgish; Letzeburgesch |
| LB | Luxembourgish; Letzeburgesch |
| lg | Ganda |
| LG | Ganda |
| li | Limburgan; Limburger; Limburgish |
| LI | Limburgan; Limburger; Limburgish |
| ln | Lingala |
| LN | Lingala |
| lo | Lao |
| LO | Lao |
| lt | Lithuanian |
| LT | Lithuanian |
| lu | Luba-Katanga |
| LU | Luba-Katanga |
| lv | Latvian |
| LV | Latvian |
| mg | Malagasy |
| MG | Malagasy |
| mh | Marshallese |
| MH | Marshallese |
| mi | Maori |
| MI | Maori |
| mk | Macedonian |
| MK | Macedonian |
| ml | Malayalam |
| ML | Malayalam |
| mn | Mongolian |
| MN | Mongolian |
| mo | Moldavian; Moldovan |
| MO | Moldavian; Moldovan |
| mr | Marathi |
| MR | Marathi |
| ms | Malay |
| MS | Malay |
| mt | Maltese |
| MT | Maltese |
| my | Burmese |
| MY | Burmese |
| na | Nauru |
| NA | Nauru |
| nb | Bokmal Norwegian; Norwegian Bokmal |
| NB | Bokmal Norwegian; Norwegian Bokmal |
| nd | Ndebele; North; North Ndebele |
| ND | Ndebele; North; North Ndebele |
| ne | Nepali |
| NE | Nepali |
| ng | Ndonga |
| NG | Ndonga |
| nl | Dutch; Flemish |
| NL | Dutch; Flemish |
| nn | Norwegian Nynorsk; Nynorsk, Norwegian |
| NN | Norwegian Nynorsk; Nynorsk, Norwegian |
| no | Norwegian |
| NO | Norwegian |
| nr | Ndebele; South; South Ndebele |
| NR | Ndebele; South; South Ndebele |
| nv | Navajo; Navaho |
| NV | Navajo; Navaho |
| ny | Chichewa; Chewa; Nyanja |
| NY | Chichewa; Chewa; Nyanja |
| oc | Occitan (post 1500) |
| OC | Occitan (post 1500) |
| oj | Ojibwa |
| OJ | Ojibwa |
| om | Oromo |
| OM | Oromo |
| or | Oriya |
| OR | Oriya |
| os | Ossetian; Ossetic |
| OS | Ossetian; Ossetic |
| pa | Panjabi; Punjabi |
| PA | Panjabi; Punjabi |
| pi | Pali |
| PI | Pali |
| pl | Polish |
| PL | Polish |
| ps | Pushto; Pashto |
| PS | Pushto; Pashto |
| pt | Portuguese |
| PT | Portuguese |
| qu | Quechua |
| QU | Quechua |
| rm | Romansh |
| RM | Romansh |
| rn | Rundi |
| RN | Rundi |
| ro | Romanian |
| RO | Romanian |
| ru | Russian |
| RU | Russian |
| rw | Kinyarwanda |
| RW | Kinyarwanda |
| sa | Sanskrit |
| SA | Sanskrit |
| sc | Sardinian |
| SC | Sardinian |
| sd | Sindhi |
| SD | Sindhi |
| se | Northern Sami |
| SE | Northern Sami |
| sg | Sango |
| SG | Sango |
| si | Sinhala; Sinhalese |
| SI | Sinhala; Sinhalese |
| sk | Slovak |
| SK | Slovak |
| sl | Slovenian |
| SL | Slovenian |
| sm | Samoan |
| SM | Samoan |
| sn | Shona |
| SN | Shona |
| so | Somali |
| SO | Somali |
| sq | Albanian |
| SQ | Albanian |
| sr | Serbian |
| SR | Serbian |
| ss | Swati |
| SS | Swati |
| st | Sotho, Southern |
| ST | Sotho, Southern |
| su | Sundanese |
| SU | Sundanese |
| sv | Swedish |
| SV | Swedish |
| sw | Swahili |
| SW | Swahili |
| ta | Tamil |
| TA | Tamil |
| te | Telugu |
| TE | Telugu |
| tg | Tajik |
| TG | Tajik |
| th | Thai |
| TH | Thai |
| ti | Tigrinya |
| TI | Tigrinya |
| tk | Turkmen |
| TK | Turkmen |
| tl | Tagalog |
| TL | Tagalog |
| tn | Tswana |
| TN | Tswana |
| to | Tonga (Tonga Islands) |
| TO | Tonga (Tonga Islands) |
| tr | Turkish |
| TR | Turkish |
| ts | Tsonga |
| TS | Tsonga |
| tt | Tatar |
| TT | Tatar |
| tw | Twi |
| TW | Twi |
| ty | Tahitian |
| TY | Tahitian |
| ug | Uighur; Uyghur |
| UG | Uighur; Uyghur |
| uk | Ukrainian |
| UK | Ukrainian |
| ur | Urdu |
| UR | Urdu |
| uz | Uzbek |
| UZ | Uzbek |
| ve | Venda |
| VE | Venda |
| vi | Vietnamese |
| VI | Vietnamese |
| vo | Volapük |
| VO | Volapük |
| wa | Walloon |
| WA | Walloon |
| wo | Wolof |
| WO | Wolof |
| xh | Xhosa |
| XH | Xhosa |
| yi | Yiddish |
| YI | Yiddish |
| yo | Yoruba |
| YO | Yoruba |
| za | Zhuang; Chuang |
| ZA | Zhuang; Chuang |
| zh | Chinese |
| ZH | Chinese |
| zu | Zulu |
| ZU | Zulu |