| ISO 639-3 | art-001 |
| okx | |
| ISO 639-3 Reference Names | art-289 | Okpe (Northwestern Edo) |
| ISO 639-3 Print Names | art-290 | Okpe (Northwestern Edo) |
| ISO 639-3 Inverted Names | art-291 | Okpe (Northwestern Edo) |
| Ethnologue Primary Language Names | art-323 | Okpe |
| Glottolog Languoid Names | art-326 | Okpe (Northwestern Edo) |
| Glottocode | art-327 | okpe1249 |
| Glottolog Primary Key | art-328 | 31545 |
| Ethnologue Language Names | art-330 | Okpe |
| English | eng-000 | Okpe |