我们经常需要用缩写的代码来表示一种语言，比如用en表示英语，用de表示德语。ISO 639就是规定语种代码的国际标准。
最早的时候，ISO 639规定的代码是，用两个拉丁字母表示一种语言，这被称为ISO 639-1。但是，两个拉丁字母最多只有262=676种组合，而世界上已知的语言总数可能有六七千种，因此明显是不够的。所以，后来又规定了ISO 639-2，用三个拉丁字母的组合表示一种语言。
常见语言的ISO 代码如下表。
| ISO639-1 Code | ISO639-2 Code | 中文名 | 英文名 |
| ar | ara | 阿拉伯语 | Arabic |
| ko | kor | 朝鲜语 | Korean |
| de | deu | 德语 | German |
| ru | rus | 俄语 | Russian |
| fr | fra | 法语 | French |
| zh | zho | 汉语 | Chinese |
| la | lat | 拉丁语 | Latin |
| pt | por | 葡萄牙语 | Portuguese |
| ja | jpn | 日语 | Japanese |
| es | spa | 西班牙语 | Spainese |
| en | eng | 英语 | English |
| it | ita | 意大利语 | Italian |
| hi | hin | 印地语 | Hindi |
| yi | yid | 意第绪语 | Yiddish |
完整的语言代码表请看这里。
但是只规定语种代码还不够，在同一种语言中，往往还包括许多种变体，比如中文分为简体中文和繁体中文两种，因此还必须规定子代码。
以往，人们常用zh-CN表示在中国大陆地区使用的中文，也就是简体中文，用zh-TW表示在台湾地区使用的中文，也就是繁体中文。但是，这种表示法很不完善，试问中国大陆地区出版的繁体中文书籍，应该如何用代码表示呢？
目前，语言的标签表示法的国际标准是RFC 4646，名称是《Tags for Identifying Languages》。
简单说，这个文件规定，一种语言的标签应该按照如下方式排列：
language-script-region-variant-extension-privateuse
1. language：这部分就是ISO 639规定的代码，比如中文是zh。
2. script：表示变体，比如简体汉字是zh-Hans，繁体汉字是zh-Hant。
3. region：表示语言使用的地理区域，比如zh-Hans-CN就是中国大陆使用的简体中文。
4. variant：表示方言。
5. extension-privateus：表示扩展用途和私有标识。
一般约定，language标签全部小写，region标签全部大写，script标签只有首字母大写。不同标签之间用连字号-链接。
下面列出一些与中文有关的语言标签。
zh-Hans 简体中文
zh-Hans-CN 大陆地区使用的简体中文
zh-Hans-HK 香港地区使用的简体中文
zh-Hans-MO 澳门使用的简体中文
zh-Hans-SG 新加坡使用的简体中文
zh-Hans-TW 台湾使用的简体中文
zh-Hant 繁体中文
zh-Hant-CN 大陆地区使用的繁体中文
zh-Hant-HK 香港地区使用的繁体中文
zh-Hant-MO 澳门使用的繁体中文
zh-Hant-SG 新加坡使用的繁体中文
zh-Hant-TW 台湾使用的繁体中文
此外，还有一些目前仍在使用，但因不符合规范，将被逐步替代（grandfathered）的标签。
zh-hakka 客家话
zh-cmn 普通话
zh-cmn-Hans 简体普通话
zh-cmn-Hant 繁体普通话
zh-gan 江西话
zh-guoyu 国语
zh-min 福建话
zh-min-nan 闽南话
zh-wuu 吴语（上海话）
zh-xiang 湖南话
zh-yue 粤语
有一点需要注意，任何合法的标签都必须经过IANA的认证，已通过认证的标签可以在这个网页查到。此外，网上还有一个非官方的标签搜索引擎。
附：完整的语言代码表
Codes for the Representation of Names of Languages
Codes arranged alphabetically by alpha-3/ISO 639-2 Code
Note: ISO 639-2 is the alpha-3 code in Codes for the representation of names of languages-- Part 2. There are 21 languages that have alternative codes for bibliographic or terminology purposes. In those cases, each is listed separately and they are designated as "B" (bibliographic) or "T" (terminology). In all other cases there is only one ISO 639-2 code. Multiple codes assigned to the same language are to be considered synonyms. ISO 639-1 is the alpha-2 code.
| ISO 639-2 Code | ISO 639-1 Code | English name of Language | French name of Language |
|---|---|---|---|
| aar | aa | Afar | afar |
| abk | ab | Abkhazian | abkhaze |
| ace | Achinese | aceh | |
| ach | Acoli | acoli | |
| ada | Adangme | adangme | |
| ady | Adyghe; Adygei | adyghé | |
| afa | Afro-Asiatic languages | afro-asiatiques, langues | |
| afh | Afrihili | afrihili | |
| afr | af | Afrikaans | afrikaans |
| ain | Ainu | aïnou | |
| aka | ak | Akan | akan |
| akk | Akkadian | akkadien | |
| alb (B) sqi (T) | sq | Albanian | albanais |
| ale | Aleut | aléoute | |
| alg | Algonquian languages | algonquines, langues | |
| alt | Southern Altai | altai du Sud | |
| amh | am | Amharic | amharique |
| ang | English, Old (ca.450-1100) | anglo-saxon (ca.450-1100) | |
| anp | Angika | angika | |
| apa | Apache languages | apaches, langues | |
| ara | ar | Arabic | arabe |
| arc | Official Aramaic (700-300 BCE); Imperial Aramaic (700-300 BCE) | araméen d'empire (700-300 BCE) | |
| arg | an | Aragonese | aragonais |
| arm (B) hye (T) | hy | Armenian | arménien |
| arn | Mapudungun; Mapuche | mapudungun; mapuche; mapuce | |
| arp | Arapaho | arapaho | |
| art | Artificial languages | artificielles, langues | |
| arw | Arawak | arawak | |
| asm | as | Assamese | assamais |
| ast | Asturian; Bable; Leonese; Asturleonese | asturien; bable; léonais; asturoléonais | |
| ath | Athapascan languages | athapascanes, langues | |
| aus | Australian languages | australiennes, langues | |
| ava | av | Avaric | avar |
| ave | ae | Avestan | avestique |
| awa | Awadhi | awadhi | |
| aym | ay | Aymara | aymara |
| aze | az | Azerbaijani | azéri |
| bad | Banda languages | banda, langues | |
| bai | Bamileke languages | bamiléké, langues | |
| bak | ba | Bashkir | bachkir |
| bal | Baluchi | baloutchi | |
| bam | bm | Bambara | bambara |
| ban | Balinese | balinais | |
| baq (B) eus (T) | eu | Basque | basque |
| bas | Basa | basa | |
| bat | Baltic languages | baltes, langues | |
| bej | Beja; Bedawiyet | bedja | |
| bel | be | Belarusian | biélorusse |
| bem | Bemba | bemba | |
| ben | bn | Bengali | bengali |
| ber | Berber languages | berbères, langues | |
| bho | Bhojpuri | bhojpuri | |
| bih | bh | Bihari languages | langues biharis |
| bik | Bikol | bikol | |
| bin | Bini; Edo | bini; edo | |
| bis | bi | Bislama | bichlamar |
| bla | Siksika | blackfoot | |
| bnt | Bantu languages | bantou, langues | |
| tib (B) bod (T) | bo | Tibetan | tibétain |
| bos | bs | Bosnian | bosniaque |
| bra | Braj | braj | |
| bre | br | Breton | breton |
| btk | Batak languages | batak, langues | |
| bua | Buriat | bouriate | |
| bug | Buginese | bugi | |
| bul | bg | Bulgarian | bulgare |
| bur (B) mya (T) | my | Burmese | birman |
| byn | Blin; Bilin | blin; bilen | |
| cad | Caddo | caddo | |
| cai | Central American Indian languages | amérindiennes de l'Amérique centrale, langues | |
| car | Galibi Carib | karib; galibi; carib | |
| cat | ca | Catalan; Valencian | catalan; valencien |
| cau | Caucasian languages | caucasiennes, langues | |
| ceb | Cebuano | cebuano | |
| cel | Celtic languages | celtiques, langues; celtes, langues | |
| cze (B) ces (T) | cs | Czech | tchèque |
| cha | ch | Chamorro | chamorro |
| chb | Chibcha | chibcha | |
| che | ce | Chechen | tchétchène |
| chg | Chagatai | djaghataï | |
| chi (B) zho (T) | zh | Chinese | chinois |
| chk | Chuukese | chuuk | |
| chm | Mari | mari | |
| chn | Chinook jargon | chinook, jargon | |
| cho | Choctaw | choctaw | |
| chp | Chipewyan; Dene Suline | chipewyan | |
| chr | Cherokee | cherokee | |
| chu | cu | Church Slavic; Old Slavonic; Church Slavonic; Old Bulgarian; Old Church Slavonic | slavon d'église; vieux slave; slavon liturgique; vieux bulgare |
| chv | cv | Chuvash | tchouvache |
| chy | Cheyenne | cheyenne | |
| cmc | Chamic languages | chames, langues | |
| cop | Coptic | copte | |
| cor | kw | Cornish | cornique |
| cos | co | Corsican | corse |
| cpe | Creoles and pidgins, English based | créoles et pidgins basés sur l'anglais | |
| cpf | Creoles and pidgins, French-based | créoles et pidgins basés sur le français | |
| cpp | Creoles and pidgins, Portuguese-based | créoles et pidgins basés sur le portugais | |
| cre | cr | Cree | cree |
| crh | Crimean Tatar; Crimean Turkish | tatar de Crimé | |
| crp | Creoles and pidgins | créoles et pidgins | |
| csb | Kashubian | kachoube | |
| cus | Cushitic languages | couchitiques, langues | |
| wel (B) cym (T) | cy | Welsh | gallois |
| cze (B) ces (T) | cs | Czech | tchèque |
| dak | Dakota | dakota | |
| dan | da | Danish | danois |
| dar | Dargwa | dargwa | |
| day | Land Dayak languages | dayak, langues | |
| del | Delaware | delaware | |
| den | Slave (Athapascan) | esclave (athapascan) | |
| ger (B) deu (T) | de | German | allemand |
| dgr | Dogrib | dogrib | |
| din | Dinka | dinka | |
| div | dv | Divehi; Dhivehi; Maldivian | maldivien |
| doi | Dogri | dogri | |
| dra | Dravidian languages | dravidiennes, langues | |
| dsb | Lower Sorbian | bas-sorabe | |
| dua | Duala | douala | |
| dum | Dutch, Middle (ca.1050-1350) | néerlandais moyen (ca. 1050-1350) | |
| dut (B) nld (T) | nl | Dutch; Flemish | néerlandais; flamand |
| dyu | Dyula | dioula | |
| dzo | dz | Dzongkha | dzongkha |
| efi | Efik | efik | |
| egy | Egyptian (Ancient) | égyptien | |
| eka | Ekajuk | ekajuk | |
| gre (B) ell (T) | el | Greek, Modern (1453-) | grec moderne (après 1453) |
| elx | Elamite | élamite | |
| eng | en | English | anglais |
| enm | English, Middle (1100-1500) | anglais moyen (1100-1500) | |
| epo | eo | Esperanto | espéranto |
| est | et | Estonian | estonien |
| baq (B) eus (T) | eu | Basque | basque |
| ewe | ee | Ewe | éwé |
| ewo | Ewondo | éwondo | |
| fan | Fang | fang | |
| fao | fo | Faroese | féroïen |
| per (B) fas (T) | fa | Persian | persan |
| fat | Fanti | fanti | |
| fij | fj | Fijian | fidjien |
| fil | Filipino; Pilipino | filipino; pilipino | |
| fin | fi | Finnish | finnois |
| fiu | Finno-Ugrian languages | finno-ougriennes, langues | |
| fon | Fon | fon | |
| fre (B) fra (T) | fr | French | français |
| fre (B) fra (T) | fr | French | français |
| frm | French, Middle (ca.1400-1600) | français moyen (1400-1600) | |
| fro | French, Old (842-ca.1400) | français ancien (842-ca.1400) | |
| frr | Northern Frisian | frison septentrional | |
| frs | Eastern Frisian | frison oriental | |
| fry | fy | Western Frisian | frison occidental |
| ful | ff | Fulah | peul |
| fur | Friulian | frioulan | |
| gaa | Ga | ga | |
| gay | Gayo | gayo | |
| gba | Gbaya | gbaya | |
| gem | Germanic languages | germaniques, langues | |
| geo (B) kat (T) | ka | Georgian | géorgien |
| ger (B) deu (T) | de | German | allemand |
| gez | Geez | guèze | |
| gil | Gilbertese | kiribati | |
| gla | gd | Gaelic; Scottish Gaelic | gaélique; gaélique écossais |
| gle | ga | Irish | irlandais |
| glg | gl | Galician | galicien |
| glv | gv | Manx | manx; mannois |
| gmh | German, Middle High (ca.1050-1500) | allemand, moyen haut (ca. 1050-1500) | |
| goh | German, Old High (ca.750-1050) | allemand, vieux haut (ca. 750-1050) | |
| gon | Gondi | gond | |
| gor | Gorontalo | gorontalo | |
| got | Gothic | gothique | |
| grb | Grebo | grebo | |
| grc | Greek, Ancient (to 1453) | grec ancien (jusqu'à 1453) | |
| gre (B) ell (T) | el | Greek, Modern (1453-) | grec moderne (après 1453) |
| grn | gn | Guarani | guarani |
| gsw | Swiss German; Alemannic; Alsatian | suisse alémanique; alémanique; alsacien | |
| guj | gu | Gujarati | goudjrati |
| gwi | Gwich'in | gwich'in | |
| hai | Haida | haida | |
| hat | ht | Haitian; Haitian Creole | haïtien; créole haïtien |
| hau | ha | Hausa | haoussa |
| haw | Hawaiian | hawaïen | |
| heb | he | Hebrew | hébreu |
| her | hz | Herero | herero |
| hil | Hiligaynon | hiligaynon | |
| him | Himachali languages; Western Pahari languages | langues himachalis; langues paharis occidentales | |
| hin | hi | Hindi | hindi |
| hit | Hittite | hittite | |
| hmn | Hmong; Mong | hmong | |
| hmo | ho | Hiri Motu | hiri motu |
| hrv | hr | Croatian | croate |
| hsb | Upper Sorbian | haut-sorabe | |
| hun | hu | Hungarian | hongrois |
| hup | Hupa | hupa | |
| arm (B) hye (T) | hy | Armenian | arménien |
| iba | Iban | iban | |
| ibo | ig | Igbo | igbo |
| ice (B) isl (T) | is | Icelandic | islandais |
| ido | io | Ido | ido |
| iii | ii | Sichuan Yi; Nuosu | yi de Sichuan |
| ijo | Ijo languages | ijo, langues | |
| iku | iu | Inuktitut | inuktitut |
| ile | ie | Interlingue; Occidental | interlingue |
| ilo | Iloko | ilocano | |
| ina | ia | Interlingua (International Auxiliary Language Association) | interlingua (langue auxiliaire internationale) |
| inc | Indic languages | indo-aryennes, langues | |
| ind | id | Indonesian | indonésien |
| ine | Indo-European languages | indo-européennes, langues | |
| inh | Ingush | ingouche | |
| ipk | ik | Inupiaq | inupiaq |
| ira | Iranian languages | iraniennes, langues | |
| iro | Iroquoian languages | iroquoises, langues | |
| ice (B) isl (T) | is | Icelandic | islandais |
| ita | it | Italian | italien |
| jav | jv | Javanese | javanais |
| jbo | Lojban | lojban | |
| jpn | ja | Japanese | japonais |
| jpr | Judeo-Persian | judéo-persan | |
| jrb | Judeo-Arabic | judéo-arabe | |
| kaa | Kara-Kalpak | karakalpak | |
| kab | Kabyle | kabyle | |
| kac | Kachin; Jingpho | kachin; jingpho | |
| kal | kl | Kalaallisut; Greenlandic | groenlandais |
| kam | Kamba | kamba | |
| kan | kn | Kannada | kannada |
| kar | Karen languages | karen, langues | |
| kas | ks | Kashmiri | kashmiri |
| geo (B) kat (T) | ka | Georgian | géorgien |
| kau | kr | Kanuri | kanouri |
| kaw | Kawi | kawi | |
| kaz | kk | Kazakh | kazakh |
| kbd | Kabardian | kabardien | |
| kha | Khasi | khasi | |
| khi | Khoisan languages | khoïsan, langues | |
| khm | km | Central Khmer | khmer central |
| kho | Khotanese; Sakan | khotanais; sakan | |
| kik | ki | Kikuyu; Gikuyu | kikuyu |
| kin | rw | Kinyarwanda | rwanda |
| kir | ky | Kirghiz; Kyrgyz | kirghiz |
| kmb | Kimbundu | kimbundu | |
| kok | Konkani | konkani | |
| kom | kv | Komi | kom |
| kon | kg | Kongo | kongo |
| kor | ko | Korean | coréen |
| kos | Kosraean | kosrae | |
| kpe | Kpelle | kpellé | |
| krc | Karachay-Balkar | karatchai balkar | |
| krl | Karelian | carélien | |
| kro | Kru languages | krou, langues | |
| kru | Kurukh | kurukh | |
| kua | kj | Kuanyama; Kwanyama | kuanyama; kwanyama |
| kum | Kumyk | koumyk | |
| kur | ku | Kurdish | kurde |
| kut | Kutenai | kutenai | |
| lad | Ladino | judéo-espagnol | |
| lah | Lahnda | lahnda | |
| lam | Lamba | lamba | |
| lao | lo | Lao | lao |
| lat | la | Latin | latin |
| lav | lv | Latvian | letton |
| lez | Lezghian | lezghien | |
| lim | li | Limburgan; Limburger; Limburgish | limbourgeois |
| lin | ln | Lingala | lingala |
| lit | lt | Lithuanian | lituanien |
| lol | Mongo | mongo | |
| loz | Lozi | lozi | |
| ltz | lb | Luxembourgish; Letzeburgesch | luxembourgeois |
| lua | Luba-Lulua | luba-lulua | |
| lub | lu | Luba-Katanga | luba-katanga |
| lug | lg | Ganda | ganda |
| lui | Luiseno | luiseno | |
| lun | Lunda | lunda | |
| luo | Luo (Kenya and Tanzania) | luo (Kenya et Tanzanie) | |
| lus | Lushai | lushai | |
| mac (B) mkd (T) | mk | Macedonian | macédonien |
| mad | Madurese | madourais | |
| mag | Magahi | magahi | |
| mah | mh | Marshallese | marshall |
| mai | Maithili | maithili | |
| mak | Makasar | makassar | |
| mal | ml | Malayalam | malayalam |
| man | Mandingo | mandingue | |
| mao (B) mri (T) | mi | Maori | maori |
| map | Austronesian languages | austronésiennes, langues | |
| mar | mr | Marathi | marathe |
| mas | Masai | massaï | |
| may (B) msa (T) | ms | Malay | malais |
| mdf | Moksha | moksa | |
| mdr | Mandar | mandar | |
| men | Mende | mendé | |
| mga | Irish, Middle (900-1200) | irlandais moyen (900-1200) | |
| mic | Mi'kmaq; Micmac | mi'kmaq; micmac | |
| min | Minangkabau | minangkabau | |
| mis | Uncoded languages | langues non codées | |
| mac (B) mkd (T) | mk | Macedonian | macédonien |
| mkh | Mon-Khmer languages | môn-khmer, langues | |
| mlg | mg | Malagasy | malgache |
| mlt | mt | Maltese | maltais |
| mnc | Manchu | mandchou | |
| mni | Manipuri | manipuri | |
| mno | Manobo languages | manobo, langues | |
| moh | Mohawk | mohawk | |
| mon | mn | Mongolian | mongol |
| mos | Mossi | moré | |
| mao (B) mri (T) | mi | Maori | maori |
| may (B) msa (T) | ms | Malay | malais |
| mul | Multiple languages | multilingue | |
| mun | Munda languages | mounda, langues | |
| mus | Creek | muskogee | |
| mwl | Mirandese | mirandais | |
| mwr | Marwari | marvari | |
| bur (B) mya (T) | my | Burmese | birman |
| myn | Mayan languages | maya, langues | |
| myv | Erzya | erza | |
| nah | Nahuatl languages | nahuatl, langues | |
| nai | North American Indian languages | nord-amérindiennes, langues | |
| nap | Neapolitan | napolitain | |
| nau | na | Nauru | nauruan |
| nav | nv | Navajo; Navaho | navaho |
| nbl | nr | Ndebele, South; South Ndebele | ndébélé du Sud |
| nde | nd | Ndebele, North; North Ndebele | ndébélé du Nord |
| ndo | ng | Ndonga | ndonga |
| nds | Low German; Low Saxon; German, Low; Saxon, Low | bas allemand; bas saxon; allemand, bas; saxon, bas | |
| nep | ne | Nepali | népalais |
| new | Nepal Bhasa; Newari | nepal bhasa; newari | |
| nia | Nias | nias | |
| nic | Niger-Kordofanian languages | nigéro-kordofaniennes, langues | |
| niu | Niuean | niué | |
| dut (B) nld (T) | nl | Dutch; Flemish | néerlandais; flamand |
| nno | nn | Norwegian Nynorsk; Nynorsk, Norwegian | norvégien nynorsk; nynorsk, norvégien |
| nob | nb | Bokmål, Norwegian; Norwegian Bokmål | norvégien bokmål |
| nog | Nogai | nogaï; nogay | |
| non | Norse, Old | norrois, vieux | |
| nor | no | Norwegian | norvégien |
| nqo | N'Ko | n'ko | |
| nso | Pedi; Sepedi; Northern Sotho | pedi; sepedi; sotho du Nord | |
| nub | Nubian languages | nubiennes, langues | |
| nwc | Classical Newari; Old Newari; Classical Nepal Bhasa | newari classique | |
| nya | ny | Chichewa; Chewa; Nyanja | chichewa; chewa; nyanja |
| nym | Nyamwezi | nyamwezi | |
| nyn | Nyankole | nyankolé | |
| nyo | Nyoro | nyoro | |
| nzi | Nzima | nzema | |
| oci | oc | Occitan (post 1500) | occitan (après 1500) |
| oji | oj | Ojibwa | ojibwa |
| ori | or | Oriya | oriya |
| orm | om | Oromo | galla |
| osa | Osage | osage | |
| oss | os | Ossetian; Ossetic | ossète |
| ota | Turkish, Ottoman (1500-1928) | turc ottoman (1500-1928) | |
| oto | Otomian languages | otomi, langues | |
| paa | Papuan languages | papoues, langues | |
| pag | Pangasinan | pangasinan | |
| pal | Pahlavi | pahlavi | |
| pam | Pampanga; Kapampangan | pampangan | |
| pan | pa | Panjabi; Punjabi | pendjabi |
| pap | Papiamento | papiamento | |
| pau | Palauan | palau | |
| peo | Persian, Old (ca.600-400 B.C.) | perse, vieux (ca. 600-400 av. J.-C.) | |
| per (B) fas (T) | fa | Persian | persan |
| phi | Philippine languages | philippines, langues | |
| phn | Phoenician | phénicien | |
| pli | pi | Pali | pali |
| pol | pl | Polish | polonais |
| pon | Pohnpeian | pohnpei | |
| por | pt | Portuguese | portugais |
| pra | Prakrit languages | prâkrit, langues | |
| pro | Provençal, Old (to 1500);Occitan, Old (to 1500) | provençal ancien (jusqu'à 1500); occitan ancien (jusqu'à 1500) | |
| pus | ps | Pushto; Pashto | pachto |
| qaa-qtz | Reserved for local use | réservée à l'usage local | |
| que | qu | Quechua | quechua |
| raj | Rajasthani | rajasthani | |
| rap | Rapanui | rapanui | |
| rar | Rarotongan; Cook Islands Maori | rarotonga; maori des îles Cook | |
| roa | Romance languages | romanes, langues | |
| roh | rm | Romansh | romanche |
| rom | Romany | tsigane | |
| rum (B) ron (T) | ro | Romanian; Moldavian; Moldovan | roumain; moldave |
| rum (B) ron (T) | ro | Romanian; Moldavian; Moldovan | roumain; moldave |
| run | rn | Rundi | rundi |
| rup | Aromanian; Arumanian; Macedo-Romanian | aroumain; macédo-roumain | |
| rus | ru | Russian | russe |
| sad | Sandawe | sandawe | |
| sag | sg | Sango | sango |
| sah | Yakut | iakoute | |
| sai | South American Indian languages | sud-amérindiennes, langues | |
| sal | Salishan languages | salishennes, langues | |
| sam | Samaritan Aramaic | samaritain | |
| san | sa | Sanskrit | sanskrit |
| sas | Sasak | sasak | |
| sat | Santali | santal | |
| scn | Sicilian | sicilien | |
| sco | Scots | écossais | |
| sel | Selkup | selkoupe | |
| sem | Semitic languages | sémitiques, langues | |
| sga | Irish, Old (to 900) | irlandais ancien (jusqu'à 900) | |
| sgn | Sign Languages | langues des signes | |
| shn | Shan | chan | |
| sid | Sidamo | sidamo | |
| sin | si | Sinhala; Sinhalese | singhalais |
| sio | Siouan languages | sioux, langues | |
| sit | Sino-Tibetan languages | sino-tibétaines, langues | |
| sla | Slavic languages | slaves, langues | |
| slo (B) slk (T) | sk | Slovak | slovaque |
| slo (B) slk (T) | sk | Slovak | slovaque |
| slv | sl | Slovenian | slovène |
| sma | Southern Sami | sami du Sud | |
| sme | se | Northern Sami | sami du Nord |
| smi | Sami languages | sames, langues | |
| smj | Lule Sami | sami de Lule | |
| smn | Inari Sami | sami d'Inari | |
| smo | sm | Samoan | samoan |
| sms | Skolt Sami | sami skolt | |
| sna | sn | Shona | shona |
| snd | sd | Sindhi | sindhi |
| snk | Soninke | soninké | |
| sog | Sogdian | sogdien | |
| som | so | Somali | somali |
| son | Songhai languages | songhai, langues | |
| sot | st | Sotho, Southern | sotho du Sud |
| spa | es | Spanish; Castilian | espagnol; castillan |
| alb (B) sqi (T) | sq | Albanian | albanais |
| srd | sc | Sardinian | sarde |
| srn | Sranan Tongo | sranan tongo | |
| srp | sr | Serbian | serbe |
| srr | Serer | sérère | |
| ssa | Nilo-Saharan languages | nilo-sahariennes, langues | |
| ssw | ss | Swati | swati |
| suk | Sukuma | sukuma | |
| sun | su | Sundanese | soundanais |
| sus | Susu | soussou | |
| sux | Sumerian | sumérien | |
| swa | sw | Swahili | swahili |
| swe | sv | Swedish | suédois |
| syc | Classical Syriac | syriaque classique | |
| syr | Syriac | syriaque | |
| tah | ty | Tahitian | tahitien |
| tai | Tai languages | tai, langues | |
| tam | ta | Tamil | tamoul |
| tat | tt | Tatar | tatar |
| tel | te | Telugu | télougou |
| tem | Timne | temne | |
| ter | Tereno | tereno | |
| tet | Tetum | tetum | |
| tgk | tg | Tajik | tadjik |
| tgl | tl | Tagalog | tagalog |
| tha | th | Thai | thaï |
| tib (B) bod (T) | bo | Tibetan | tibétain |
| tig | Tigre | tigré | |
| tir | ti | Tigrinya | tigrigna |
| tiv | Tiv | tiv | |
| tkl | Tokelau | tokelau | |
| tlh | Klingon; tlhIngan-Hol | klingon | |
| tli | Tlingit | tlingit | |
| tmh | Tamashek | tamacheq | |
| tog | Tonga (Nyasa) | tonga (Nyasa) | |
| ton | to | Tonga (Tonga Islands) | tongan (Îles Tonga) |
| tpi | Tok Pisin | tok pisin | |
| tsi | Tsimshian | tsimshian | |
| tsn | tn | Tswana | tswana |
| tso | ts | Tsonga | tsonga |
| tuk | tk | Turkmen | turkmène |
| tum | Tumbuka | tumbuka | |
| tup | Tupi languages | tupi, langues | |
| tur | tr | Turkish | turc |
| tut | Altaic languages | altaïques, langues | |
| tvl | Tuvalu | tuvalu | |
| twi | tw | Twi | twi |
| tyv | Tuvinian | touva | |
| udm | Udmurt | oudmourte | |
| uga | Ugaritic | ougaritique | |
| uig | ug | Uighur; Uyghur | ouïgour |
| ukr | uk | Ukrainian | ukrainien |
| umb | Umbundu | umbundu | |
| und | Undetermined | indéterminée | |
| urd | ur | Urdu | ourdou |
| uzb | uz | Uzbek | ouszbek |
| vai | Vai | vaï | |
| ven | ve | Venda | venda |
| vie | vi | Vietnamese | vietnamien |
| vol | vo | Volapük | volapük |
| vot | Votic | vote | |
| wak | Wakashan languages | wakashanes, langues | |
| wal | Wolaitta; Wolaytta | wolaitta; wolaytta | |
| war | Waray | waray | |
| was | Washo | washo | |
| wel (B) cym (T) | cy | Welsh | gallois |
| wen | Sorbian languages | sorabes, langues | |
| wln | wa | Walloon | wallon |
| wol | wo | Wolof | wolof |
| xal | Kalmyk; Oirat | kalmouk; oïrat | |
| xho | xh | Xhosa | xhosa |
| yao | Yao | yao | |
| yap | Yapese | yapois | |
| yid | yi | Yiddish | yiddish |
| yor | yo | Yoruba | yoruba |
| ypk | Yupik languages | yupik, langues | |
| zap | Zapotec | zapotèque | |
| zbl | Blissymbols; Blissymbolics; Bliss | symboles Bliss; Bliss | |
| zen | Zenaga | zenaga | |
| zha | za | Zhuang; Chuang | zhuang; chuang |
| chi (B) zho (T) | zh | Chinese | chinois |
| znd | Zande languages | zandé, langues | |
| zul | zu | Zulu | zoulou |
| zun | Zuni | zuni | |
| zxx | No linguistic content; Not applicable | pas de contenu linguistique; non applicable | |
| zza | Zaza; Dimili; Dimli; Kirdki; Kirmanjki; Zazaki | zaza; dimili; dimli; kirdki; kirmanjki; zazaki |
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