This is a list of ISO 639 codes and IETF language tags (BCP 47) for individual constructed languages, complete .
ISO 639-2 and ISO 639-5 also have the code for artificial languages. The BCP 47 subtag can be used to create a suitable private use tag for any constructed language that has not been assigned an official language tag (e.g., could be used for Solresol).
The old SIL language identifiers (usually written in capitals) are officially obsolete and should no longer be used. They formed the basis of the ISO 639-3 language codes, but some SIL identifiers that had been retired before the establishment of ISO 639-3 were later assigned to different languages within ISO.
The IANA Language Subtag Registry (for IETF's language tags defined in BCP 47) was updated on 29 July 2009 to include all ISO 639-3 and ISO 639-5 identifiers in use at that time.
List of codes Language ISO639-1 ISO639-2 ISO639-3 BCP 47 Glottolog Afrihili Arcaicam Esperantom Balaibalan Basic English Blissymbols Blissymbols with the limited Authorized Vocabulary defined by BCI Blissymbols as defined by Blissymbolics Communication International Brithenig Dutton Speedwords Efatese Enochian The BCP 47 language tags , and are old tags that were grandfathered in and are now deprecated. Eskayan Esperanto Esperanto with H-digraphs Esperanto with X-digraphs Europanto The ISO 639-3 standard previously included the code for Europanto, which was retired on 2009-01-16, with the reason “Nonexistent”. Ido Interglossa Interlingua (IALA) Interlingue (formerly Occidental) ISO 639-3 used to have the code for Occidental. This was retired on 18 July 2007, because Occidental is just another name for Interlingue, which has the code . Interslavic Klingon Kotava Láadan Latino sine flexione Lingua Franca Nova Lojban Medefaidrin Neo Novial Original Volapük Palawa kani Quenya Romanova Sindarin Talossan Toki Pona Volapük
BCP 47 has also reserved for simplified languages.
Writing systems When a constructed language has multiple writing systems, the following BCP 47 tags can be used to differentiate between them.
Language Script BCP 47 Interslavic Latin Cyrillic Klingon Latin KLI pIqaD Lingua Franca Nova Latin Cyrillic Quenya Latin Tengwar Cirth Sarati Sindarin Latin Tengwar Cirth
(This table only includes primary writing systems of each language, so it does not include examples such as Esperanto written in the Shavian alphabet.)
See also Language code List of ISO 639-1 codes
Notes
References
External links ConLang Code Registry (CLCR) assigns codes to constructed languages out of the "reserved for local use" codes. It also indexes the use of codes. Change Request Index ISO-639-3. Rejected registers for artificial languages.