Poids Plumes Hommes
 | Roberto Romero | 0-2-0 UFC | #2772 |  |
 | Rocky Lee | 0-1-0 UFC | #4104 |  |
 | Rodion Mubarakshin | 0-2-0 REC | #4579 |  |
 | Rodolfo Rubio | 0-1-0 UFC | #6190 | |
 | Rodrigo Brauna | 1-0-0 REC | #4162 |  |
 | Rodrigo Damm | 3-4-0 UFC | #3045 |  |
 | Rodrigo Praia | 1-1-0 REC | #4802 | |
 | Rodrigo Vera | 1-0-0 REC | #2886 |  |
 | Roedie Roets | #7429 |  | |
 | Rogelio Luna | 1-1-0 REC | #6389 | |
 | Roger Severson | 0-2-0 REC | #4235 | |
 | Rolando Dy | 1-3-0 UFC | #3589 |  |
 | Roli Delgado | 1-2-0 UFC | #4441 | |
 | Roman Bogatov | 0-1-0 UFC | #7003 | |
 | Roman Ogulchanskiy | 1-1-0 REC | #1503 |  |
 | Roman Puga | 2-0-0 REC | #621 | |
 | Ron Becker | 0-1-0 REC | #7113 |  |
 | Rony Jason | 4-4-0, 1NC UFC | #2558 | |
 | Rudson Caliocane | 0-1-0 REC | #5763 | |
 | Rustam Asuev | 1-0-0 REC | #2996 | |