| English | eng-000 |
| Opuuo | |
| ISO 639-3 | art-001 | lgn |
| ISO 639-3 Inverted Names | art-291 | Opuuo |
| Glottolog Languoid Names | art-326 | Opuuo |
| Glottocode | art-327 | opuu1239 |
| Glottolog Primary Key | art-328 | 25968 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 1682 |
| français | fra-000 | opuo |
| español | spa-000 | opúo |