OKK
| Acronym | Definition |
|---|---|
| OKK | Kokomo, Indiana (Airport Code) |
| OKK | Oud Katholieke Kerk (Dutch: Old Catholic Church; Netherlands) |
| OKK | Osaka Kuko Kotsu (Japanese airport) |
| OKK | Oslo Kamera Klubb (Norwegian: Oslo Camera Club; Norway; est. 1921) |
| OKK | Orang Kaya-Kaya (Malaysian title) |
| OKK | Oostelijke Kunststof Keten (Dutch: Eastern Plastic Chain) |