- ORC
- Origin Recognition Complex (Medical » Human Genome)** Organic Rankine Cycle (Governmental » Transportation)* Operations Research Center (Academic & Science » Universities)* Organization Resources Counselors, Inc. (Business » Firms)* Offshore Racing Council (Community » Sports)* Orange River Colony (Regional » African)* Online Roleplaying Client (Computing » Software)* Osaka Resort City (Regional)* Orocue, Colombia (Regional » Airport Codes)* Ogura Race Clutch (Community » Sports)* Oposición Revolucionaria Comunista (International » Spanish)* Oyl Riding Club (Community » Sports)* Opinion Reference Comment (Community » Media)* Ocean Resource Center (Community » Non-Profit Organizations)Office Of Rural Communities (International » Australian)
Abbreviations dictionary. 2012.