| ISO 639-3 | art-001 |
| aja | |
| ISO 639-3 Reference Names | art-289 | Aja (South Sudan) |
| ISO 639-3 Print Names | art-290 | Aja (South Sudan) |
| ISO 639-3 Inverted Names | art-291 | Aja (South Sudan) |
| ISO 639-3 Inverted Names | art-291 | Aja (Sudan) |
| Ethnologue Primary Language Names | art-323 | Aja |
| Glottolog Languoid Names | art-326 | Aja (Sudan) |
| Glottocode | art-327 | ajas1235 |
| Glottolog Primary Key | art-328 | 36278 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 1688 |
| Ethnologue Language Names | art-330 | Adja |
| Ethnologue Language Names | art-330 | Aja |
| Ethnologue Language Names | art-330 | Ajja |
| English | eng-000 | Aja |
| français | fra-000 | aja |
| русский | rus-000 | аджа |
| español | spa-000 | aja |