| Abbreviation | Definition |
|---|---|
| RWC | Real Wankers Cup |
| RWC | Real Wrestling Championship |
| RWC | Rugby World Cup |
| RWF | Real Wrestling Federation |
| RWF | Rebel Wrestling Federation |
| RWG | Racing With Guts |
| RWI | RaceWalking International |
| RWL | Red Wing Locality |
| RWO | Red and White Online |
| RWW | Rampage World Wrestling |
| RWW | Real World Wrestling |
| RWW | Running Without Women |
| RWW | Run-Walk for Wildlife |
| RX | Racer X |
| RXL | Racing Xperimental |
| RY | Rookie Year |
| RYA | Royal Yachting Association |
| RYA | Ryerson Athletic Centre |
| RYAYO | Royal Yachting Association Yachtmaster Offshore |
| RYB | Reston Youth Baseball |