| ISO 639-3 Reference Names | art-289 | Otank |
| ISO 639-3 Print Names | art-290 | Otank |
| ISO 639-3 Inverted Names | art-291 | Otank |
| Ethnologue Primary Language Names | art-323 | Otank |
| Glottolog Languoid Names | art-326 | Otank |
| Glottocode | art-327 | otan1238 |
| Glottolog Primary Key | art-328 | 31104 |
| Ethnologue Language Names | art-330 | Itang |
| Ethnologue Language Names | art-330 | Itank |
| Ethnologue Language Names | art-330 | Otang |
| Ethnologue Language Names | art-330 | Otanga |
| Ethnologue Language Names | art-330 | Otank |
| Ethnologue Language Names | art-330 | Utanga |
| Ethnologue Language Names | art-330 | Utange |
| Ethnologue Language Names | art-330 | Utank |
| English | eng-000 | Otank |
