RC
- RC – see entry
- RCA
- (i) Radio Corporation of America
- Root Cause Analysis
- Royal Canadian Artillery
- Royal City Avenue (famous entertainment zone in Thailand)
- RCAF – (i) Royal Canadian Air Force
- RCAR – (a) Research Council for Automobile Repairs ("are-car")
- RCC – (i) Rescue Co-ordination Centre
- RCCO – (i) Royal Canadian College of Organists
- RCHA – (i) Royal Canadian Horse Artillery (regiment)
- RCMP – (i) Royal Canadian Mounted Police
- RCRA – (a) Resource Conservation and Recovery Act ("reck-ra" or "rick-ra")
- RCS
- (i) Radar Cross-Section
- Reaction Control System
- Revision Control System
- RCT
- (i) Randomized Controlled Trial
- Robotically Controlled Telescope
- Rugby club toulonnais (French, "Rugby Club of Toulon")
- RCZ – (i) Rear Combat Zone
Read more about this topic: List Of Acronyms And Initialisms: R