OKB
| Acronym | Definition |
|---|---|
| OKB | Ogaki Kyoritsu Bank (Japan) |
| OKB | Operator Keyboard |
| OKB | Obsesif Kompulsif Bozukluk (Turkish: Obsessive-Compulsive Disorder) |
| OKB | OKbridge (online bridge club) |
| OKB | OK Bye |
| OKB | Osaka Kintetsu Buffaloes (Japanese baseball team) |
| OKB | Old Kent Bank (Grand Rapids, Michigan) |
| OKB | Online Knowledge Base |
| OKB | Opytnoye Konstruktorskoye Byuro (Russian: Experimental Design Bureau) |