Tous les combattants
 | Ronaldo Silva | 0-1-0 REC | #7711 |  |
 | Ronaldo Souza | 9-7-0 UFC | #969 | |
 | Ronda Rousey | 6-2-0 UFC | #120 |  |
 | Rongzhu | 4-3-0 UFC | #287 |  |
 | Ronnie Gibbs | 1-0-0 REC | #2806 | |
 | Ronnie Lawrence | 2-1-0, 1NC UFC | #3494 | |
 | Ronny Hauser | 0-1-0 REC | #7261 | |
 | Ronny Markes | 3-2-0 UFC | #2585 | |
 | Rony Bouzy | 1-2-0 REC | #2157 |  |
 | Rony Henrique | 1-1-0 REC | #7010 | |
 | Rony Jason | 4-4-0, 1NC UFC | #2591 | |
 | Ronys Torres | 0-2-0 UFC | #4928 | |
 | Roosevelt Roberts | 4-5-0, 1NC UFC | #1783 | |
 | Roque Conceicao | 0-1-0 REC | #5349 | |
 | Roque Martinez | 0-3-0 UFC | #4522 |  |
 | Rory Evans | 2-5-0 REC | #3352 |  |
 | Rory Light | 1-0-0 REC | #7426 | |
 | Rory MacDonald | 9-4-0 UFC | #549 |  |
 | Rory Markham | 1-2-0 UFC | #3879 | |
 | Rory Singer | 2-2-0 UFC | #3997 | |
 | Rose Conceicao | 0-2-0 REC | #4099 | |
 | Rose Namajunas | 12-7-0 UFC | #62 | |
 | Rosi Sexton | 0-2-0 UFC | #4508 |  |
 | Ross Houston | #7546 |  | |
 | Ross Pearson | 12-13-0, 1NC UFC | #694 | |