| Abbreviation | Definition |
|---|---|
| RNGRT | Range Rate |
| RO | Radar Operator |
| RO | Readout |
| RO | Receive Only |
| RO | Recovery Operations |
| RO | Repair and Overhaul |
| ROB | Right Outboard |
| ROC | Receiver Operator Characteristics |
| ROC | Record Of Comments |
| ROC | Regional Operations Center |
| ROC | Request of Change |
| ROD | Remote Operated Door(s) |
| RODB | Remote Object Data Base |
| ROIC | Report Of Item Configuration |
| ROLL | Roll Angle |
| ROPE | Research on Orbital Plasma Electrodynamics |
| ROS | Reduced Operating Status |
| ROS | Regulated Oxygen Supply |
| ROS | Regulated Oxygen System |
| ROS | Removable Overhead Structure |