| Abbreviation | Definition |
|---|---|
| RNB | Rhythm N Bass |
| RNB | Rhythm N Blues |
| RNB | Rock n Blues |
| RNB | Rythm and Blues |
| RNBB | Rocky Neck Bluegrass Band |
| RNCM | Royal Northern College of Music |
| RNDS | Real niggas don't sleep |
| RNJ | Rhythm N Jazz |
| RNO | Russian National Orchestra |
| RNT | Robin Nolan Trio |
| RO | Red Orchestra |
| ROA | Round Of Applause |
| ROAA | Rehearse Observe Arts At Ibapa (band rehearsal studios and soundsystem rentals) |
| ROAR | Revelations Of Alternative Rhythms |
| ROC | Rivettin Orgiastic Cacophony |
| ROCO | River Oaks Chamber Orchestra |
| ROHO | Rock On Honorable Ones! |
| ROHO | Royal Opera House Orchestra |
| ROIM | Resistance Of Independent Music |
| ROIO | Recording Of Illegitimate Origin |