Tous les combattants
 | Ronaldo Candido | 0-1-0 REC | #7511 |  |
 | Ronaldo Rodriguez | 2-1-0 UFC | #2221 |  |
 | Ronaldo Silva | 0-1-0 REC | #7747 | |
 | Ronaldo Souza | 9-7-0 UFC | #997 | |
 | Ronda Rousey | 6-2-0 UFC | #153 |  |
 | Rongzhu | 4-3-0 UFC | #453 |  |
 | Ronnie Gibbs | 1-0-0 REC | #3155 | |
 | Ronnie Lawrence | 2-1-0, 1NC UFC | #3587 | |
 | Ronny Hauser | 0-1-0 REC | #7444 | |
 | Ronny Markes | 3-2-0 UFC | #2606 | |
 | Rony Bouzy | 1-2-0 REC | #2428 |  |
 | Rony Henrique | 1-1-0 REC | #1699 | |
 | Rony Jason | 4-4-0, 1NC UFC | #2541 | |
 | Ronys Torres | 0-2-0 UFC | #5044 | |
 | Roosevelt Roberts | 4-5-0, 1NC UFC | #1843 | |
 | Roque Conceicao | 0-1-0 REC | #5328 | |
 | Roque Martinez | 0-3-0 UFC | #4571 |  |
 | Rory Evans | 2-5-0 REC | #3422 |  |
 | Rory Light | 1-0-0 REC | #7669 | |
 | Rory MacDonald | 9-4-0 UFC | #552 |  |
 | Rory Markham | 1-2-0 UFC | #4024 | |
 | Rory Singer | 2-2-0 UFC | #4120 | |
 | Rose Conceicao | 0-2-0 REC | #4247 | |
 | Rose Namajunas | 12-7-0 UFC | #80 | |
 | Rosi Sexton | 0-2-0 UFC | #4667 |  |