| Abbreviation | Definition |
|---|---|
| RFW | Request for Waiver (Deviation) |
| RG | Radio Guide |
| RG | Rate Gyro |
| RGA | Rate Gyro Assembly |
| RGA | Residual Gas Analyzer |
| RGAL | Rate Gyro Assembly-Left SRB |
| RGA-L | Rate Gyro Assembly-Left SRB (Solid Rocket Booster) |
| RGAO | Rate Gyro Assembly-Orbiter |
| RGAR | Rate Gyro Assembly-Right SRB |
| RGA-R | Rate Gyro Assembly-Right SRB (Solid Rocket Booater) |
| RGM | Redundant Gyro Monitor |
| RGP | Rate Gyro Package |
| RGPO | Rendezvous Guidance and Procedures Officer |
| RGRMA | Rate Gyro Redundancy Management Algorithm |
| RH | Right Hand |
| RHC | Right Hand Circular |
| RHC | Rotation Hand Controller |
| RHCM | Relative Humidity Control/Monitor |
| RHCP | Right Hand Circular Polarization |
| RHDA | Resonant Hemispherical Dielectric Antenna |