| Abbreviation | Definition |
|---|---|
| RRRP | Rapid Response Radiotherapy Program |
| RRRP | Rapid Response Referral Program |
| RRRP | Review and Recertification Reward Program |
| RRRP | Rosedale Runoff Reduction Project |
| RRRR | Radical Regime For Recalcitrant Rovers |
| RRRR | Random Runtime Roulette Renders |
| RRRR | Refuse Reduce Reuse Recycle |
| RRRR | Resilience Rights and Respectful Relationships |
| RRRRA | Railroad Revitalization and Regulatory Reform Act |
| RRRRR | Rader Reader Raeder Roder Roeder |
| RRRRR | React Redux Router Relay Rx |
| RRRV | Rate of Rise of Recovery Voltage |
| RRRV | Rate of Rise of Restriking Voltage |
| RRRV | Rate of Rise of the Recovery Voltage |
| RRS | Race Ride Style |
| RRS | Racing Rules of Sailing |
| RRS | Radiosonde Replacement System |
| RRS | Rally Racing Sport |
| RRS | Random Rotor Speed |
| RRS | Range Rover Sport |