| ISO 639-2/T | art-002 | niu |
| ISO 639-2/B | art-003 | niu |
| ISO 639-3 Reference Names | art-289 | Niuean |
| ISO 639-3 Print Names | art-290 | Niuean |
| ISO 639-3 Inverted Names | art-291 | Niuean |
| Ethnologue Primary Language Names | art-323 | Niue |
| Glottolog Languoid Names | art-326 | Niuean |
| Glottocode | art-327 | niue1239 |
| Glottolog Primary Key | art-328 | 41313 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 703 |
| Ethnologue Language Names | art-330 | Niue |
| Ethnologue Language Names | art-330 | Niuean |
| Ethnologue Language Names | art-330 | Niuefekai |
| 普通话 | cmn-000 | 纽埃语 |
| Deutsch | deu-000 | Nieuanisch |
| English | eng-000 | Niuean |
| français | fra-000 | niue |
| français | fra-000 | niué |
| ko e vagahau Niuē | niu-000 | ko e vagahau Niuē |
| русский | rus-000 | ниуэ |
| español | spa-000 | niue |
