| Abbreviation | Definition |
|---|---|
| RBC | Rotating Beam Ceilometer |
| RBDE | Radar Bright Display Equipment |
| RBE | Radiation Biological Effectiveness |
| RBK | Right Bank |
| RBL | Realtime Blackhole List |
| RBL | Right Buttock Line |
| RBMT | Retrospective Bibliographies on Magnetic Tape |
| RBN | Radio Beacon |
| RBSP(s) | Radiation Belt Storm Probe(s) |
| RC | Range Command |
| RC | Rate Command |
| RC | Recovery Controller |
| RC | Recurring Cost |
| RC | Resistor-Capacitor |
| RC | Reverse Current |
| RC | Rotation Control |
| RC | Rubber Cement |
| RCA | Remote Control Amplifier |
| RCB | Remote Circuit Breaker |
| RCC | Range Commanders Council |