| ISO 639-3 Reference Names | art-289 | Iowa-Oto |
| ISO 639-3 Print Names | art-290 | Iowa-Oto |
| ISO 639-3 Inverted Names | art-291 | Iowa-Oto |
| Ethnologue Primary Language Names | art-323 | Iowa-Oto |
| Glottolog Languoid Names | art-326 | Iowa-Oto |
| Glottocode | art-327 | iowa1245 |
| Glottolog Primary Key | art-328 | 36486 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 888 |
| Ethnologue Language Names | art-330 | Baxoje |
| Ethnologue Language Names | art-330 | Chiwere |
| Ethnologue Language Names | art-330 | Iowa |
| Ethnologue Language Names | art-330 | Iowa-Oto |
| Ethnologue Language Names | art-330 | Ioway |
| Ethnologue Language Names | art-330 | Jiwele |
| Ethnologue Language Names | art-330 | Jiwere |
| Ethnologue Language Names | art-330 | Missouri |
| Ethnologue Language Names | art-330 | Missouria |
| Ethnologue Language Names | art-330 | Niutaji |
| Ethnologue Language Names | art-330 | Nyut’chi |
| Ethnologue Language Names | art-330 | Oto |
| Ethnologue Language Names | art-330 | Otoe |
| English | eng-000 | Chiwere |
| English | eng-000 | Iowa-Oto |
| français | fra-000 | chiwere |
| español | spa-000 | chiwere |
| español | spa-000 | iowa-oto |
