Poids Mi-Moyens Hommes
 | Rhys McKee | 1-5-0 UFC | #820 |  |
 | Ricardo Almeida | 6-5-0 UFC | #2095 |  |
 | Ricardo Funch | 0-4-0 UFC | #4040 | |
 | Rich Attonito | 3-2-0 UFC | #3248 | |
 | Richard Martins | 5-0-0 REC | #536 |  |
 | Richard Walsh | 2-3-0, 1NC UFC | #3350 |  |
 | Rick Story | 12-7-0 UFC | #451 | |
 | Ricky Rainey | 0-2-0 UFC | #5753 | |
 | Rico Farrington | 0-1-0 REC | #6218 |  |
 | Rinat Fakhretdinov | 6-0-1 UFC | #849 |  |
 | Rivaldo Pereira | 1-0-0 REC | #1192 |  |
 | Roan Carneiro | 4-5-0 UFC | #2680 | |
 | Roan Crocker | 1-0-0 REC | #1366 |  |
 | Rob Kimmons | 3-4-0 UFC | #3051 | |
 | Robbie Lawler | 15-10-0 UFC | #147 | |
 | Robert Constantin | 0-1-0 REC | #5363 |  |
 | Robert Maciejowski | 0-1-0 REC | #7317 |  |
 | Rodrigo Sezinando | 0-1-0 UFC | #3236 | |
 | Roger Huerta | 6-2-0 UFC | #1933 | |
 | Roger Zapata | 0-1-0 UFC | #6650 | |