Poids Mi-Moyens Hommes
 | Rinat Fakhretdinov | 6-0-1 UFC | #906 |  |
 | Rivaldo Pereira | 1-0-0 REC | #1502 |  |
 | Roan Carneiro | 4-5-0 UFC | #2727 |  |
 | Roan Crocker | 1-0-0 REC | #1673 |  |
 | Rob Kimmons | 3-4-0 UFC | #3085 |  |
 | Robbie Lawler | 15-10-0 UFC | #151 | |
 | Robert Constantin | 0-1-0 REC | #5329 |  |
 | Robert Maciejowski | 0-1-0 REC | #7403 |  |
 | Rodrigo Sezinando | 0-1-0 UFC | #3333 | |
 | Roger Huerta | 6-2-0 UFC | #1944 | |
 | Roger Zapata | 0-1-0 UFC | #6721 | |
 | Romain Debienne | 3-5-0 REC | #742 |  |
 | Roman Faraldo | 2-2-0 REC | #4116 | |
 | Romie Aram | 0-1-0 UFC | #5913 |  |
 | Ron Humphrey | 1-0-0 REC | #2401 | |
 | Ronald Jhun | 0-1-0 UFC | #7171 | |
 | Ronald Paradeiser | 11-5-0 REC | #486 |  |
 | Ronaldo Silva | 0-1-0 REC | #7767 | |
 | Rory MacDonald | 9-4-0 UFC | #534 |  |
 | Ross Houston | #7692 |  |