| ISO 639-3 | art-001 |
| ncz | |
| ISO 639-3 Reference Names | art-289 | Natchez |
| ISO 639-3 Print Names | art-290 | Natchez |
| ISO 639-3 Inverted Names | art-291 | Natchez |
| Ethnologue Primary Language Names | art-323 | Natchez |
| Glottolog Languoid Names | art-326 | Natchez |
| Glottocode | art-327 | natc1249 |
| Glottolog Primary Key | art-328 | 36041 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 901 |
| Ethnologue Language Names | art-330 | Natchez |
| Ethnologue Language Names | art-330 | Taensa |
| English | eng-000 | Natchez |
| français | fra-000 | natchez |
| español | spa-000 | nachez |
| español | spa-000 | natchez |