| UNESCO Atlas of the World’s Languages in Danger ID | art-329 |
| 1976 | |
| ISO 639-3 | art-001 | ryu |
| Glottolog Languoid Names | art-326 | Central Okinawan |
| Glottocode | art-327 | cent2126 |
| Glottolog Primary Key | art-328 | 34825 |
| English | eng-000 | Okinawan |
| français | fra-000 | okinawaïen |
| español | spa-000 | okinawano |