| UNESCO Atlas of the World’s Languages in Danger ID | art-329 |
| 2623 | |
| ISO 639-3 | art-001 | pnh |
| Glottolog Languoid Names | art-326 | Penrhyn |
| Glottocode | art-327 | penr1237 |
| Glottolog Primary Key | art-328 | 41305 |
| English | eng-000 | Penrhyn |
| français | fra-000 | penrhyn |
| español | spa-000 | penrhyn |