| ISO 639-3 | art-001 |
| nkc | |
| ISO 639-3 Reference Names | art-289 | Nkongho |
| ISO 639-3 Print Names | art-290 | Nkongho |
| ISO 639-3 Inverted Names | art-291 | Nkongho |
| Ethnologue Primary Language Names | art-323 | Nkongho |
| Glottolog Languoid Names | art-326 | Nkongho |
| Glottocode | art-327 | nkon1247 |
| Glottolog Primary Key | art-328 | 29743 |
| Ethnologue Language Names | art-330 | Kinkwa |
| Ethnologue Language Names | art-330 | Lekongo |
| Ethnologue Language Names | art-330 | Nkongho |
| Ethnologue Language Names | art-330 | Upper Mbo |
| English | eng-000 | Nkongho |