| English | eng-000 |
| Twana | |
| ISO 639-3 | art-001 | twa |
| ISO 639-3 Inverted Names | art-291 | Twana |
| Glottolog Languoid Names | art-326 | Twana |
| Glottocode | art-327 | twan1247 |
| Glottolog Primary Key | art-328 | 24528 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 794 |
| français | fra-000 | twana |
| español | spa-000 | tuana |