| UNESCO Atlas of the World’s Languages in Danger ID | art-329 |
| 703 | |
| ISO 639-3 | art-001 | niu |
| Glottolog Languoid Names | art-326 | Niuean |
| Glottocode | art-327 | niue1239 |
| Glottolog Primary Key | art-328 | 41313 |
| English | eng-000 | Niuean |
| français | fra-000 | niue |
| español | spa-000 | niue |