| ISO 639-3 | art-001 |
| npy | |
| ISO 639-3 Reference Names | art-289 | Napu |
| ISO 639-3 Print Names | art-290 | Napu |
| ISO 639-3 Inverted Names | art-291 | Napu |
| Ethnologue Primary Language Names | art-323 | 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 |
| Ethnologue Language Names | art-330 | Napu |
| Ethnologue Language Names | art-330 | Pekurehua |
| English | eng-000 | Napu |
| français | fra-000 | napu |
| español | spa-000 | napu |