| 598. Rina Sawayama | Vocals | 1 |
| 598. Ringnyu "Ring" Moma | Background Vocals | 1 |
| 598. Rio Mira | Featured Artist | 1 |
| 598. Rising Appalachia | Featured Artist | 1 |
| 598. Rita Payés | Arranging, Composing, Guitar, Lead Vocals, Trombone | 1 |
| 598. Ritchie | Drums | 1 |
| 598. River Tiber | Bass, Drums, Keys, Piano, Trombone, Vocals | 1 |
| 598. River Whyless | Featured Artist | 1 |
| 598. Rivers Cuomo | Guitar, Lead Vocals | 1 |
| 598. Rivka Ravede | Background Vocals, Electronics | 1 |
| 598. Rob Collazo | Bass | 1 |
| 598. Rob Gueringer | Guitar | 1 |
| 598. Rob McCoury | Banjo | 1 |
| 598. Rob Pemberton | Bass, Piano, Vocals | 1 |
| 598. Rob Smoughton | Backing Vocals, Guitar | 1 |
| 598. Rob Stone | Background Vocals, Percussion, Saxophone | 1 |
| 598. Rob Trujillo | Musical Director | 1 |
| 598. Robbie Bennett | Keyboards | 1 |
| 598. Robbie Crowell | Bass | 1 |
| 598. Robbie Elias | Background Vocals | 1 |
| 598. Robbie Kuster | Drums | 1 |
| 598. Robbie McDonald | Guitar | 1 |
| 598. Robby Grant | Mellotron | 1 |
| 598. Robby Takac | Background Vocals, Bass | 1 |
| 598. Robert "Boogie" Bowles | Guitar | 1 |