| Abbreviation | Definition |
|---|---|
| RCSC | Rock Creek Sports Club |
| RCSC | Rotary Club of the South Cotswolds |
| RCSC | Royal Charleroi Sporting Club |
| RCST | Rotary Club of South Triangle |
| RCT | Ranger Club Thailand |
| RCT | Rugby Club Toulonnais |
| RCTB | Real Club de Tenis de Barcelona |
| RCTP | Rugby Club Touvet Pontcharra |
| RCW | Rotary Club of Wellington |
| RCWS | Rotary Club of Wall Street |
| RCY | Rugby Club Yverdon |
| RCYC | Royal Canadian Yacht Club |
| RCYC | Royal Cape Yacht Club |
| RCYC | Royal Clyde Yacht Club |
| RCYC | Royal Cork Yacht Club |
| RDCC | Rye And District Camera Club |
| RDGC | Royal Dornoch Golf Club |
| RDMC | Red Devil’s MC |
| RDMC | Red Devils Motorcycle Club |
| RDSC | Rugby and Daventry sailing club |