| ISO 639-3 | art-001 |
| tgk | |
| ISO 639-2/T | art-002 | tgk |
| ISO 639-2/B | art-003 | tgk |
| ISO 639-1 | art-004 | tg |
| ISO 639-3 Reference Names | art-289 | Tajik |
| ISO 639-3 Print Names | art-290 | Tajik |
| ISO 639-3 Inverted Names | art-291 | Tajik |
| Ethnologue Primary Language Names | art-323 | Tajiki |
| Glottolog Languoid Names | art-326 | Tajik |
| Glottocode | art-327 | taji1245 |
| Glottolog Primary Key | art-328 | 37444 |
| Ethnologue Language Names | art-330 | Galcha |
| Ethnologue Language Names | art-330 | Tadzhik |
| Ethnologue Language Names | art-330 | Tajik |
| Ethnologue Language Names | art-330 | Tajiki |
| Ethnologue Language Names | art-330 | Tajiki Persian |
| Ethnologue Language Names | art-330 | Tojiki |
| 普通话 | cmn-000 | 塔吉克语 |
| Deutsch | deu-000 | Tadschikisch |
| English | eng-000 | Tajik |
| français | fra-000 | tadjik |
| русский | rus-000 | таджикский |
| español | spa-000 | tayiko |
| тоҷикӣ | tgk-000 | тоҷикӣ |