- OCB
- Organizational Citizenship Behavior (Governmental » US Government)* Organized Crime Bureau (Community » Law)* Oil Circuit Breaker (Academic & Science » Electronics)* Obsessive Compulsive Behavior (Medical » Physiology)* Oklahoma Center for the Book (Community » Educational)* Offset Code Book (Computing » Security)* Off Campus Board (Academic & Science » Universities)* Offshore Certification Bureau (Governmental)* Open Closed Bushing (Medical)
Abbreviations dictionary. 2012.