Tous les combattants
 | Rongzhu | 4-3-0 UFC | #317 |  |
 | Ronnie Gibbs | 1-0-0 REC | #2918 |  |
 | Ronnie Lawrence | 2-1-0, 1NC UFC | #3514 | |
 | Ronny Hauser | 0-1-0 REC | #7317 | |
 | Ronny Markes | 3-2-0 UFC | #2575 |  |
 | Rony Bouzy | 1-2-0 REC | #2213 |  |
 | Rony Henrique | 1-1-0 REC | #1416 | |
 | Rony Jason | 4-4-0, 1NC UFC | #2551 | |
 | Ronys Torres | 0-2-0 UFC | #4930 | |
 | Roosevelt Roberts | 4-5-0, 1NC UFC | #1788 | |
 | Roque Conceicao | 0-1-0 REC | #5409 | |
 | Roque Martinez | 0-3-0 UFC | #4500 |  |
 | Rory Evans | 2-5-0 REC | #3361 |  |
 | Rory Light | 1-0-0 REC | #7465 | |
 | Rory MacDonald | 9-4-0 UFC | #537 |  |
 | Rory Markham | 1-2-0 UFC | #3897 | |
 | Rory Singer | 2-2-0 UFC | #4021 | |
 | Rose Conceicao | 0-2-0 REC | #4129 | |
 | Rose Namajunas | 12-7-0 UFC | #63 | |
 | Rosi Sexton | 0-2-0 UFC | #4522 |  |
 | Ross Houston | #7612 |  | |
 | Ross Pearson | 12-13-0, 1NC UFC | #670 | |
 | Ross Pointon | 0-2-0 UFC | #4761 | |
 | Rostem Akman | 0-2-0 UFC | #3643 |  |
 | Rostislav Yakushev | 0-1-0 REC | #7287 |  |