| ISO 639-3 | art-001 |
| slk | |
| ISO 639-2/T | art-002 | slk |
| ISO 639-2/B | art-003 | slo |
| ISO 639-1 | art-004 | sk |
| ISO 639-3 Reference Names | art-289 | Slovak |
| ISO 639-3 Print Names | art-290 | Slovak |
| ISO 639-3 Inverted Names | art-291 | Slovak |
| Ethnologue Primary Language Names | art-323 | Slovak |
| Glottolog Languoid Names | art-326 | Slovak |
| Glottocode | art-327 | slov1269 |
| Glottolog Primary Key | art-328 | 36653 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 1024 |
| Ethnologue Language Names | art-330 | Slovak |
| Ethnologue Language Names | art-330 | Slovakian |
| Ethnologue Language Names | art-330 | Slovencina |
| 普通话 | cmn-000 | 斯洛伐克语 |
| Deutsch | deu-000 | Slowakisch |
| English | eng-000 | Eastern Slovak |
| English | eng-000 | Slovak |
| français | fra-000 | slovaque |
| français | fra-000 | slovaque oriental |
| русский | rus-000 | словацкий |
| slovenčina | slk-000 | slovenčina |
| español | spa-000 | eslovaco |
| español | spa-000 | eslovaco oriental |