| English | eng-000 |
| Leco | |
| ISO 639-3 | art-001 | lec |
| ISO 639-3 Inverted Names | art-291 | Leco |
| Glottolog Languoid Names | art-326 | Leco |
| Glottocode | art-327 | leco1242 |
| Glottolog Primary Key | art-328 | 36034 |
| UNESCO Atlas of the World’s Languages in Danger ID | art-329 | 621 |
| français | fra-000 | leco |
| español | spa-000 | leco |