| English | eng-000 |
| Omaha-Ponca | |
| ISO 639-3 | art-001 | oma |
| ISO 639-3 Inverted Names | art-291 | Omaha-Ponca |
| Glottolog Languoid Names | art-326 | Omaha-Ponca |
| Glottocode | art-327 | omah1247 |
| Glottolog Primary Key | art-328 | 36502 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 886 |
| français | fra-000 | omaha |
| français | fra-000 | omaha-ponca |
| español | spa-000 | omaha |
| español | spa-000 | omaha-ponca |