Poids Moyens Hommes
 | Robert Bryczek | 1-2-0 UFC | #1443 |  |
 | Robert Hale | 0-1-0 REC | #7075 |  |
 | Robert Pukac | 6-8-0 REC | #977 |  |
 | Robert Valentin | 2-3-0 UFC | #342 |  |
 | Robert Valiev | 0-2-0 REC | #5596 |  |
 | Robin Roos | 0-3-0 REC | #4018 |  |
 | Rodolfo Vieira | 6-5-0 UFC | #997 |  |
 | Rodrigo Ruas | 0-1-0 UFC | #6458 | |
 | Roger Gracie | 0-1-0 UFC | #4162 | |
 | Roger Narvaez | 1-2-0 UFC | #4007 | |
 | Roggy Lawson | 1-0-0 REC | #8030 |  |
 | Roman Kopylov | 7-5-0 UFC | #459 | |
 | Romero Cotton | 1-2-0 REC | #5649 | |
 | Romulo Oliveira | 0-1-0 REC | #6695 | |
 | Ron Stallings | 1-2-0 UFC | #4122 | |
 | Ronaldo Souza | 9-7-0 UFC | #1021 | |
 | Rory Markham | 1-2-0 UFC | #4111 | |
 | Rory Singer | 2-2-0 UFC | #4200 | |
 | Royce Alger | 0-2-0 UFC | #5085 | |
 | Rudyard Moncayo | 0-1-0 UFC | #7149 | |