| ISO 639-3 Reference Names | art-289 | Lengo |
| ISO 639-3 Print Names | art-290 | Lengo |
| ISO 639-3 Inverted Names | art-291 | Lengo |
| Ethnologue Primary Language Names | art-323 | Lengo |
| Glottolog Languoid Names | art-326 | Lengo |
| Glottocode | art-327 | leng1259 |
| Glottolog Primary Key | art-328 | 41602 |
| Ethnologue Language Names | art-330 | Aola |
| Ethnologue Language Names | art-330 | Doku |
| Ethnologue Language Names | art-330 | Ghaimuta |
| Ethnologue Language Names | art-330 | Ghua |
| Ethnologue Language Names | art-330 | Lengo |
| Ethnologue Language Names | art-330 | Paripao |
| Ethnologue Language Names | art-330 | Ruavatu |
| Ethnologue Language Names | art-330 | Tadhimboko |
| English | eng-000 | Lengo |
