| Abbreviation | Definition |
|---|---|
| RC | Receive Clock |
| RC | Reduced Configuration |
| RC | Regional Coordinator |
| RC | Relative Coordinates |
| RC | Remote Controlled |
| RC | Requirements Contract |
| RC | Reserve Component |
| RC | River Current |
| RC | Road Reconnaissance |
| RC(SW) | Regional Command (Southwest) |
| RCA | Radio Corporation of America |
| RCA | Recon Company Alpha |
| RCA | Request for Corrective Action |
| RCA | Residual Capabilities Assessment |
| RCA | Riot Control Agent |
| RCA | Royal Canadian Artillery |
| RCAC | Royal Canadian Armoured Corps |
| RCAC | Royal Canadian Army Cadet |
| RCAC | Royal Canadian Army Cadets |
| RCACA | Royal Canadian Armoured Corps Association |