| Abbreviation | Definition |
|---|---|
| RTU | Remote Terminal Unit |
| RTV | Room-Temperature Vulcanized |
| RU | Range Update |
| RU | Remote Unit |
| RUA | Radioisotope Use Authorization |
| RUD | Rudder |
| RUPS | Rotary Uninterruptable Power Supply |
| RUPT | RUPTure |
| RUST | Remote User Scheduling Terminal |
| RUT | Resource Utilization Time |
| RV | Recirculation Valve |
| RV | Recovery Vehicle |
| RV | Recovery Vessel |
| RV | Relative Velocity |
| RV | Relief Valve |
| RV | Retrieval Vessel |
| RVCF | Remote Vehicle Checkout Facility |
| RVDF | Rotary Vacuum Drum Filter |
| RVDT | Rotary Variable Differential Transformer |
| RVN | Requirements Verification Network |