HTML 4.0 dispone de la capacidad de indicar el idioma en el que está escrito un documento o parte de él por medio del atributo LANG. Para ello se usan una serie de códigos de dos letras normalizados por es estandar ISO 639. La lista de estos códigos de idiomas es la que puedes ver a continación, en la que se enumeran los idiomas por orden alfabético (en inglés), junto con su código y la familia idiomática a la que pertenecen.
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
| IDIOMA | CÓDIGO | FAMILIA IDIOMÁTICA |
|---|---|---|
| A | ||
| ABKHAZIAN | AB | IBERO-CAUCASIAN |
| AFAN (OROMO) | OM | HAMITIC |
| AFAR | AA | HAMITIC |
| AFRIKAANS | AF | GERMANIC |
| ALBANIAN | SQ | INDO-EUROPEAN (OTHER) |
| AMHARIC | AM | SEMITIC |
| ARABIC | AR | SEMITIC |
| ARMENIAN | HY | INDO-EUROPEAN (OTHER) |
| ASSAMESE | AS | INDIAN |
| AYMARA | AY | AMERINDIAN |
| AZERBAIJANI | AZ | TURKIC/ALTAIC |
| B | ||
| BASHKIR | BA | TURKIC/ALTAIC |
| BASQUE | EU | BASQUE |
| BENGALI;BANGLA | BN | INDIAN |
| BHUTANI | DZ | ASIAN |
| BIHARI | BH | INDIAN |
| BISLAMA | BI | [not given] |
| BRETON | BR | CELTIC |
| BULGARIAN | BG | SLAVIC |
| BURMESE | MY | ASIAN |
| BYELORUSSIAN | BE | SLAVIC |
| C | ||
| CAMBODIAN | KM | ASIAN |
| CATALAN | CA | ROMANCE |
| CHINESE | ZH | ASIAN |
| CORSICAN | CO | ROMANCE |
| CROATIAN | HR | SLAVIC |
| CZECH | CS | SLAVIC |
| D | ||
| DANISH | DA | GERMANIC |
| DUTCH | NL | GERMANIC |
| E | ||
| ENGLISH | EN | GERMANIC |
| ESPERANTO | EO | INTERNATIONAL AUX. |
| ESTONIAN | ET | FINNO-UGRIC |
| F | ||
| FAROESE | FO | GERMANIC |
| FIJI | FJ | OCEANIC/INDONESIAN |
| FINNISH | FI | FINNO-UGRIC |
| FRENCH | FR | ROMANCE |
| FRISIAN | FY | GERMANIC |
| G | ||
| GALICIAN | GL | ROMANCE |
| GEORGIAN | KA | IBERO-CAUCASIAN |
| GERMAN | DE | GERMANIC |
| GREEK | EL | LATIN/GREEK |
| GREENLANDIC | KL | ESKIMO |
| GUARANI | GN | AMERINDIAN |
| GUJARATI | GU | INDIAN |
| H | ||
| HAUSA | HA | NEGRO-AFRICAN |
| HEBREW | HE | SEMITIC |
| HINDI | HI | INDIAN |
| HUNGARIAN | HU | FINNO-UGRIC |
| I | ||
| ICELANDIC | IS | GERMANIC |
| INDONESIAN | ID | OCEANIC/INDONESIAN |
| INTERLINGUA | IA | INTERNATIONAL AUX. |
| INTERLINGUE | IE | INTERNATIONAL AUX. |
| INUKTITUT | IU | [ ] |
| INUPIAK | IK | ESKIMO |
| IRISH | GA | CELTIC |
| ITALIAN | IT | ROMANCE |
| J | ||
| JAPANESE | JA | ASIAN |
| JAVANESE | JV | OCEANIC/INDONESIAN |
| K | ||
| KANNADA | KN | DRAVIDIAN |
| KASHMIRI | KS | INDIAN |
| KAZAKH | KK | TURKIC/ALTAIC |
| KINYARWANDA | RW | NEGRO-AFRICAN |
| KIRGHIZ | KY | TURKIC/ALTAIC |
| KURUNDI | RN | NEGRO-AFRICAN |
| KOREAN | KO | ASIAN |
| KURDISH | KU | IRANIAN |
| L | ||
| LAOTHIAN | LO | ASIAN |
| LATIN | LA | LATIN/GREEK |
| LATVIAN;LETTISH | LV | BALTIC |
| LINGALA | LN | NEGRO-AFRICAN |
| LITHUANIAN | LT | BALTIC |
| M | ||
| MACEDONIAN | MK | SLAVIC |
| MALAGASY | MG | OCEANIC/INDONESIAN |
| MALAY | MS | OCEANIC/INDONESIAN |
| MALAYALAM | ML | DRAVIDIAN |
| MALTESE | MT | SEMITIC |
| MAORI | MI | OCEANIC/INDONESIAN |
| MARATHI | MR | INDIAN |
| MOLDAVIAN | MO | ROMANCE |
| MONGOLIAN | MN | [not given] |
| N | ||
| NAURU | NA | [not given] |
| NEPALI | NE | INDIAN |
| NORWEGIAN | NO | GERMANIC |
| O | ||
| OCCITAN | OC | ROMANCE |
| ORIYA | OR | INDIAN |
| P | ||
| PASHTO;PUSHTO | PS | IRANIAN |
| PERSIAN (farsi) | FA | IRANIAN |
| POLISH | PL | SLAVIC |
| PORTUGUESE | PT | ROMANCE |
| PUNJABI | PA | INDIAN |
| Q | ||
| QUECHUA | QU | AMERINDIAN |
| R | ||
| RHAETO-ROMANCE | RM | ROMANCE |
| ROMANIAN | RO | ROMANCE |
| RUSSIAN | RU | SLAVIC |
| S | ||
| SAMOAN | SM | OCEANIC/INDONESIAN |
| SANGHO | SG | NEGRO-AFRICAN |
| SANSKRIT | SA | INDIAN |
| SCOTS GAELIC | GD | CELTIC |
| SERBIAN | SR | SLAVIC |
| SERBO-CROATIAN | SH | SLAVIC |
| SESOTHO | ST | NEGRO-AFRICAN |
| SETSWANA | TN | NEGRO-AFRICAN |
| SHONA | SN | NEGRO-AFRICAN |
| SINDHI | SD | INDIAN |
| SINGHALESE | SI | INDIAN |
| SISWATI | SS | NEGRO-AFRICAN |
| SLOVAK | SK | SLAVIC |
| SLOVENIAN | SL | SLAVIC |
| SOMALI | SO | HAMITIC |
| SPANISH | ES | ROMANCE |
| SUNDANESE | SU | OCEANIC/INDONESIAN |
| SWAHILI | SW | NEGRO-AFRICAN |
| SWEDISH | SV | GERMANIC |
| T | ||
| TAGALOG | TL | OCEANIC/INDONESIAN |
| TAJIK | TG | IRANIAN |
| TAMIL | TA | DRAVIDIAN |
| TATAR | TT | TURKIC/ALTAIC |
| TELUGU | TE | DRAVIDIAN |
| THAI | TH | ASIAN |
| TIBETAN | BO | ASIAN |
| TIGRINYA | TI | SEMITIC |
| TONGA | TO | OCEANIC/INDONESIAN |
| TSONGA | TS | NEGRO-AFRICAN |
| TURKISH | TR | TURKIC/ALTAIC |
| TURKMEN | TK | TURKIC/ALTAIC |
| TWI | TW | NEGRO-AFRICAN |
| U | ||
| UIGUR | UG | [ ] |
| UKRAINIAN | UK | SLAVIC |
| URDU | UR | INDIAN |
| UZBEK | UZ | TURKIC/ALTAIC |
| V | ||
| VIETNAMESE | VI | ASIAN |
| VOLAPUK | VO | INTERNATIONAL AUX. |
| W | ||
| WELSH | CY | CELTIC |
| WOLOF | WO | NEGRO-AFRICAN |
| X | ||
| XHOSA | XH | NEGRO-AFRICAN |
| Y | ||
| YIDDISH | YI | GERMANIC |
| YORUBA | YO | NEGRO-AFRICAN |
| Z | ||
| ZHUANG | ZA | [ ] |
| ZULU | ZU | NEGRO-AFRICAN |
| Página principal | Curso de HTML | Tutorial de CSS | Mapa del Site | Taller de Web |
