Tous les combattants
 | Ronaldo Souza | 9-7-0 UFC | #890 |  |
 | Ronda Rousey | 6-2-0 UFC | #209 |  |
 | Ronnie Gibbs | 1-0-0 REC | #2229 | |
 | Ronnie Lawrence | 2-1-0, 1NC UFC | #3262 | |
 | Ronny Hauser | 0-1-0 REC | #6814 | |
 | Ronny Markes | 3-2-0 UFC | #2393 | |
 | Rony Bouzy | 1-2-0 REC | #1610 |  |
 | Rony Jason | 4-4-0, 1NC UFC | #2473 | |
 | Ronys Torres | 0-2-0 UFC | #4578 | |
 | Roosevelt Roberts | 4-5-0, 1NC UFC | #1681 | |
 | Roque Conceicao | 0-1-0 REC | #4854 | |
 | Roque Martinez | 0-3-0 UFC | #4168 |  |
 | Rory Evans | 2-5-0 REC | #3154 |  |
 | Rory Light | 1-0-0 REC | #7043 | |
 | Rory MacDonald | 9-4-0 UFC | #524 |  |
 | Rory Markham | 1-2-0 UFC | #3625 | |
 | Rory Singer | 2-2-0 UFC | #3743 | |
 | Rose Conceicao | 0-2-0 REC | #3783 | |
 | Rose Namajunas | 12-7-0 UFC | #66 | |
 | Rosi Sexton | 0-2-0 UFC | #4175 |  |
 | Ross Houston | #7070 |  | |
 | Ross Pearson | 12-13-0, 1NC UFC | #648 | |
 | Ross Pointon | 0-2-0 UFC | #4295 | |
 | Rostem Akman | 0-2-0 UFC | #3318 |  |
 | Rousimar Palhares | 8-4-0 UFC | #1019 | |