Poids Plumes Hommes
 | Rodolfo Rubio | 0-1-0 UFC | #6227 |  |
 | Rodrigo Brauna | 2-0-0 REC | #1110 |  |
 | Rodrigo Damm | 3-4-0 UFC | #3324 |  |
 | Rodrigo Praia | 1-1-0 REC | #5291 | |
 | Rodrigo Vera | 1-0-0 UFC | #793 |  |
 | Roedie Roets | #7806 |  | |
 | Rogelio Luna | 1-1-0 REC | #6866 | |
 | Roger Severson | 0-2-0 REC | #4836 | |
 | Rolando Dy | 1-3-0 UFC | #3931 |  |
 | Roli Delgado | 1-2-0 UFC | #4701 | |
 | Roman Bogatov | 0-1-0 UFC | #7431 |  |
 | Roman Kurashvili | 1-0-0 REC | #2055 |  |
 | Roman Ogulchanskiy | 1-1-0 REC | #2155 |  |
 | Roman Puga | 2-0-0 REC | #1364 | |
 | Ron Becker | 0-1-0 REC | #7423 |  |
 | Rony Jason | 4-4-0, 1NC UFC | #2555 | |
 | Rostislav Yakushev | 0-1-0 REC | #7152 |  |
 | Rudson Caliocane | 0-1-0 REC | #5977 | |
 | Ryan Cafaro | 1-0-0 REC | #1280 | |
 | Ryan Hall | 5-1-0 UFC | #1162 | |