| 598. Robin MacMillan | Drums | 1 |
| 598. Robin Mullarkey | Bass, Percussion, Vocals | 1 |
| 598. Robin Olson | Featured Artist | 1 |
| 598. Robin Vining | Guitar, Vocals | 1 |
| 598. Rocco Nigro | Accordion, Audio | 1 |
| 598. Rocco Palladino | Bass | 1 |
| 598. Roddy Ricch | Keys, Vocals | 1 |
| 598. Rodney Crowell | Featured Artist | 1 |
| 598. Rodrigo Amarante | Featured Artist | 1 |
| 598. Rodrigo Avendano | Keyboards | 1 |
| 598. Roger "Jooseondrums" Benford | Drums | 1 |
| 598. Roger Eno | Composer, Piano | 1 |
| 598. Roger Lewis | Baritone Sax | 1 |
| 598. Roger Rodríguez | Background Vocals, Guiro, Maracas | 1 |
| 598. Roger Tallroth | 12-String Guitar | 1 |
| 598. Rogerst Charles | Saxophone | 1 |
| 598. Rogest "Roscoe" Carstarphen | Keys | 1 |
| 598. Rogét Chahayed | Keys | 1 |
| 598. Rohin Khemani | Percussion | 1 |
| 598. Rokia Traoré | Featured Artist | 1 |
| 598. Rolando "Phanso" Wilson | Drums | 1 |
| 598. Rolando Morales-Matos | Percussion | 1 |
| 598. Rollum Haas | Drum Machine | 1 |
| 598. Roma Baran | Audio, Synthesizer | 1 |
| 598. Romano DiNillo | Bodhran, Cajon | 1 |