| Abbreviation | Definition |
|---|---|
| RPS | Rock, Paper, Scissors |
| RPSL | Rohnert Park Soccer League |
| RPSS | Ranked Probability Skill Score |
| RPW | Revolutionary Pro Wrestling |
| RQB | Regional Quiz Bowl |
| RQL | Ratcheting Quick-load rack |
| RR | Race Ready |
| RR | Race Replica |
| RR | Racing Replica |
| RR | Rat Racing |
| RR | Road Racing |
| RR | Roller Rocker |
| RR | Rookies Restricted |
| RR | Run Rest |
| RR | Run Run |
| RRCA | Road Runner Clubs of America |
| RRCB | Royal Racing Club de Bruxelles |
| RRG | Rogue River Gold |
| RRM | Recreation Resource Management |
| RRM | Road///Race Motorsports |