| Abbreviation | Definition |
|---|---|
| ROCR | Review of Central Returns |
| ROCR | Rogues of Clwyd Rhan |
| ROCS | Recruitment Onboarding and Classification System |
| ROCS | Registration and Online Component System |
| ROCS | Registration Online Component System |
| ROCS | Reliability of Compound Semiconductors |
| ROCS | Republic of China Ship |
| ROCS | Ressence Orbital Convex System |
| ROCS | Right On Cue Services |
| ROCS | Robotic Observatory Control System |
| ROCS | Roving Outdoor Conservation School |
| ROD | Railway Operating Department |
| ROD | Read Or Dream |
| ROD | Realms Of Despair |
| ROD | Record Of Disgrace |
| ROD | Reduce Oil Dependency |
| ROD | Reference Ordered Data |
| ROD | Regular Operating District |
| ROD | Representation Of Data |
| ROD | Ring of Death |