| Ethnologue Language Names | art-330 |
| Olcoola | |
| ISO 639-3 | art-001 | olk |
| Ethnologue Language Names | art-330 | Koka-ollugul |
| Ethnologue Language Names | art-330 | Koko Olkol |
| Ethnologue Language Names | art-330 | Koko Olkolo |
| Ethnologue Language Names | art-330 | Koko-olkol |
| Ethnologue Language Names | art-330 | Olgolo |
| Ethnologue Language Names | art-330 | Olkol |
| Ethnologue Language Names | art-330 | Olkulo |
| Ethnologue Language Names | art-330 | Ol’kol |
| Ethnologue Language Names | art-330 | Ulkulu |
| Ethnologue Language Names | art-330 | Wulgulu |