OBK
| Acronym | Definition |
|---|---|
| OBK | Object Backup |
| OBK | Oefening Baart Kunst (Dutch: Practice Makes Perfect; band; Netherlands) |
| OBK | Old Black Kettle (band) |
| OBK | Northbrook, Illinois (Airport Code) |
| OBK | Ocean Beach Kiwi (Hastings, New Zealand) |
| OBK | Outward Bound Korea (Seoul, South Korea) |
| OBK | Ore Body Knowledge (geoscience) |
| OBK | Order of Blessed Ksenia |