| ISO 639-3 | art-001 |
| kla | |
| ISO 639-3 Reference Names | art-289 | Klamath-Modoc |
| ISO 639-3 Print Names | art-290 | Klamath-Modoc |
| ISO 639-3 Inverted Names | art-291 | Klamath-Modoc |
| Ethnologue Primary Language Names | art-323 | Klamath-Modoc |
| Glottolog Languoid Names | art-326 | Klamath-Modoc |
| Glottocode | art-327 | klam1254 |
| Glottolog Primary Key | art-328 | 34270 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 822 |
| Ethnologue Language Names | art-330 | Klamath |
| Ethnologue Language Names | art-330 | Klamath-Modoc |
| English | eng-000 | Klamath-Modoc |
| français | fra-000 | klamath |
| español | spa-000 | klamath-modoc |
| español | spa-000 | lutuamí-modoco |