| Nederlands | nld-000 |
| Oldenburg in Holstein | |
| Deutsch | deu-000 | Oldenburg in Holstein |
| English | eng-000 | Oldenburg in Holstein |
| Esperanto | epo-000 | Oldenburg |
| lengua lumbarda | lmo-000 | Oldenburg |
| română | ron-000 | Oldenburg in Holstein |
| русский | rus-000 | Ольденбург |
| svenska | swe-000 | Oldenburg |
| Türkçe | tur-000 | Oldenburg in Holstein |
| Volapük | vol-000 | Oldenburg in Holstein |