| Abbreviation | Definition |
|---|---|
| RIB | Rest In Between |
| RIDE | Rehabilitative Instruction For Disabled Equestrians |
| RIF | Rider In France |
| RIGA | Rhode Island Golf Association |
| RIH | Run Into Hole |
| RIN | Racer Identification Number |
| RINO | Radio Integrated Navigation Outdoors |
| RIP | Rude Immature Player |
| RIR | Rhode Island Rebellion |
| RIR | Richmond International Raceway |
| RIR | Riverside International Raceway |
| RISE | Rockwall Indoor Sports Expo |
| RISF | Randalls Island Sports Foundation |
| RISP | Runners in Scoring Position |
| RITC | Rage In The Cage |
| RITC | Rhode Island Trials Club |
| RITFL | Running In The Fast Lane |
| RITS | Racing In The Rockies |
| RIW | Reebok Interval Workout |
| RIWW | Reebok Interval Walking Workout |