| ISO 639-3 | art-001 |
| lgu | |
| ISO 639-3 Reference Names | art-289 | Longgu |
| ISO 639-3 Print Names | art-290 | Longgu |
| ISO 639-3 Inverted Names | art-291 | Longgu |
| Ethnologue Primary Language Names | art-323 | Longgu |
| Glottolog Languoid Names | art-326 | Longgu |
| Glottocode | art-327 | long1395 |
| Glottolog Primary Key | art-328 | 41622 |
| Ethnologue Language Names | art-330 | Logu |
| Ethnologue Language Names | art-330 | Longgu |
| English | eng-000 | Longgu |