Poids Plumes Hommes
 | Roberto Hernandez | 4-2-0 REC | #3463 |  |
 | Roberto Romero | 0-2-0 UFC | #3032 |  |
 | Rocky Lee | 0-1-0 UFC | #4112 |  |
 | Rodion Mubarakshin | 0-2-0 REC | #4978 |  |
 | Rodolfo Rubio | 0-1-0 UFC | #6311 | |
 | Rodrigo Brauna | 2-0-0 REC | #1231 | |
 | Rodrigo Damm | 3-4-0 UFC | #3365 |  |
 | Rodrigo Praia | 1-1-0 REC | #5336 | |
 | Rodrigo Vera | 1-0-0 UFC | #939 |  |
 | Roedie Roets | #7861 |  | |
 | Rogelio Luna | 1-1-0 REC | #6865 | |
 | Roger Severson | 0-2-0 REC | #4947 | |
 | Rolando Dy | 1-3-0 UFC | #3971 |  |
 | Roli Delgado | 1-2-0 UFC | #4726 | |
 | Roman Bogatov | 0-1-0 UFC | #7516 | |
 | Roman Kurashvili | 1-0-0 REC | #2147 |  |
 | Roman Ogulchanskiy | 1-1-0 REC | #2249 |  |
 | Roman Puga | 3-0-0 REC | #463 | |
 | Ron Becker | 0-1-0 REC | #7450 |  |
 | Rony Jason | 4-4-0, 1NC UFC | #2541 | |