| Abbreviation | Definition |
|---|---|
| RCHB | Reserve Cargo Handling Battalion |
| RCI | Remove, Check, and Install |
| RCI | Residential Communities Initiative |
| RCI | Resource Consultants, Incorporated |
| RCIED | Radio-Controlled Improvised Explosive Device |
| RCIEDS | Radio Controlled Improvised Explosive Devices |
| RCIO | Regional Chief Information Officer |
| RCK | Recheck |
| RCM | Reliability Centered Maintenance |
| RCM | Rules for Courts-Martial |
| RCMDV | Remote Controlled Mine Disposal Vehicle |
| RCMI | Royal Canadian Military Institute |
| RCMP | Range Complex Master Plan |
| RCN | Royal Canadian Navy |
| RCNORTH | NATO Regional Command NORTH |
| RCO | Radar Control Operator |
| RCO | Regional Communications Officer |
| RCO | Regional Contracting Office |
| RCO | Rifle Combat Optics |
| RCO-AK | Regional Contracting Office - Alaska |