| Abbreviation | Definition |
|---|---|
| RCT | Return Channel Terrestrial |
| RCV | Receive |
| RCVR | ReCeiVeR |
| RCVS | Remote Control Video Switch |
| RCVY | Recovery |
| RCY | Recovery |
| RCY | Remaining Cycles |
| RD | Radiation Detection |
| RD | Reference Designator |
| RD | Reference Document |
| RD | Round |
| RD/SB | Rudder Speed Brake |
| RDA | Remote Data Access |
| RDA | Resident Data Area |
| RDAS | Rocket Data Acquisition System |
| RDBMS | Relational Data Base Management System |
| RDC | Reference Designator Code |
| RDC | Request for Document Change |
| RDCS | Reconfiguration Data Collection System |
| RDD | Requirements Definition Document |