| Abbreviation | Definition |
|---|---|
| RADIO | Romance And Delight I Offer |
| RAE | Rapid Automatic Excuse |
| RAF | Ranma And Akane Fanfiction |
| RAF | Retaliated Air Force |
| RAF | Retired And Free |
| RAF | Robke And Friends |
| RAG | Rodents Are Great |
| RAGBRAI | Riding Another Great Beer Route Across Iowa |
| RAH | Rich Arse Hole |
| RAK | Real As Kickin |
| RALF | Redundant Array Of Little Flashguns |
| RAM | Rampant Angry Men |
| RAM | Real Awesome Memory |
| RAM | Really Angry Machine |
| RAM | Really Asks for Mechanics |
| RAND | Raunchy And Nauseating Dining |
| RAND | Research And No Development |
| RAP | Ragging A** Pirate |
| RAP | Ragging Ass Pirate |
| RAP | Really Angry People |