| ISO 639-3 | art-001 |
| ykt | |
| ISO 639-3 Reference Names | art-289 | Kathu |
| ISO 639-3 Print Names | art-290 | Kathu |
| ISO 639-3 Inverted Names | art-291 | Kathu |
| Ethnologue Primary Language Names | art-323 | Kathu |
| Glottolog Languoid Names | art-326 | Kathu |
| Glottocode | art-327 | kath1251 |
| Glottolog Primary Key | art-328 | 27547 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 529 |
| Ethnologue Language Names | art-330 | Gasu |
| Ethnologue Language Names | art-330 | Kathu |
| English | eng-000 | Kathu |
| français | fra-000 | katou |
| español | spa-000 | gasu |