| English | eng-000 |
| Siwi | |
| ISO 639-3 | art-001 | siz |
| ISO 639-3 Inverted Names | art-291 | Siwi |
| Glottolog Languoid Names | art-326 | Siwi |
| Glottocode | art-327 | siwi1239 |
| Glottolog Primary Key | art-328 | 25842 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 6 |
| français | fra-000 | siwi |
| español | spa-000 | siví |