| Abbreviation | Definition |
|---|---|
| R | Rock |
| R | Rollicking |
| R&B | R&B commonly abbreviated for "rhythm and blues" but also means "rap and beat" |
| R&B | Rhythm and Blues |
| R&R | Rock and Roll |
| R7M | The abbreviation for the American music artist REAPER7MAN. |
| RAB | The Ramshackle Ammunition Band |
| RACB | Rodney Alan Combs Band |
| RACE | Rubato Amateur Chamber Ensemble |
| RAE | Rock-afire ExplosionAn Animatronic band from the early 80's that would perform at Showbiz Pizza Plac |
| RAKHI | A decorative band symbolising the bond between siblings. Used during the Hindu festival of Raksha Ba |
| RAM | Royal Academy of Music |
| RAMA | Robotics Arts Music and Animation |
| RAMBO | Revolution Anarchy Mosh Bike Overthrow |
| RAMM | Real American Made Music |
| RAMP | Riders Artists Musicians Project |
| RAMP | Rochester Area Music Project |
| RAMS | Rockin Against Multiple Sclerosis |
| RAMSA | Research for Advanced Music Sound and Acoustics |
| RAMU | Random Access Musical Universe |