| Abbreviation | Definition |
|---|---|
| RIPA | Regulation of Investigatory Powers Act |
| RISC | Rental Industry Secure Customer |
| RISP | Rhode Island State Police |
| RIU | Regulatory Impact Unit |
| RJ | Restorative Justice |
| RK | Registered Keeper |
| RK | Rookie |
| RKB | Responder Knowledge Base |
| RM/CM | Regular Members/Civilian Members |
| RMA | Refused Medical Assistance |
| RMM | Random Mass Murders |
| RMP | Radio Motor Patrol Car |
| RMP | Royal Mounted Police |
| RMPD | Rocky Mount Police Department |
| RMPD | Rolling Meadows Police Department |
| RMPO | Retired Military Police Officers |
| RMT | Raid Management Tool |
| RNP | Rwanda National Police |
| RNZPC | Royal New Zealand Police College |
| RO | Registered Owner |