OYK
| Acronym | Definition |
|---|---|
| OYK | Operasi Yustisi Kependudukan (Indonesian: Operation Yustisi Population; Department and the Civil Population; Jakarta, Indonesia) |
| OYK | Oulun Yliopiston Kirjasto (Finnish: Oulu University Library; Oulu, Finland) |
| OYK | Oulunkylän Yhteiskoulu (Finnish: Upper North Karelia ) |