| Abbreviation | Definition |
|---|---|
| RCT | recruit |
| RCT | Regimental Combat Team |
| RCT | Rescue Coordination Team (Navy) |
| RCTA | Regional Counterdrug Training Academy |
| RCU | Rate Changes Unit |
| RCU | Remote Control Unit |
| RCU | Reserve Component Unit |
| RCV | Remotely Controlled Vehicle |
| RCVTP | Reserve Component Virtual Training Program |
| RCWS | Remote Control Weapon Station |
| RCWS | Remote Controlled Weapon Station |
| RCXD | Radio Controlled Explosive Device |
| RCXD | Remote Control eXplosive Device |
| RCYB | Revolutionary Communist Youth Brigade |
| RCZ | Rear Combat Zone |
| RD | Rapid Deployment |
| RD | Repair Database |
| RD | Replacement Detachment |
| RD | Requirements Document |
| RD | Research and Development |