| English | eng-000 |
| Napu | |
| ISO 639-3 | art-001 | npy |
| ISO 639-3 Inverted Names | art-291 | Napu |
| Glottolog Languoid Names | art-326 | Napu |
| Glottocode | art-327 | napu1241 |
| Glottolog Primary Key | art-328 | 40136 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 2312 |
| français | fra-000 | napu |
| español | spa-000 | napu |