Tous les combattants
 | Romero Cotton | 1-2-0 REC | #5404 |  |
 | Romero dos Reis | 1-1-0 REC | #3902 |  |
 | Romie Aram | 0-1-0 UFC | #5866 |  |
 | Ron Becker | 0-1-0 REC | #7347 |  |
 | Ron Faircloth | #7419 | | |
 | Ron Humphrey | 1-0-0 REC | #2243 | |
 | Ron Stallings | 1-2-0 UFC | #3868 | |
 | Ron Van Clief | 0-1-0 UFC | #4712 | |
 | Ron Waterman | 2-1-1 UFC | #3577 | |
 | Ronal Siahaan | 1-2-0 REC | #4205 |  |
 | Ronald Jhun | 0-1-0 UFC | #7037 | |
 | Ronald Paradeiser | 11-5-0 REC | #452 |  |
 | Ronaldo Candido | 0-1-0 REC | #7357 | |
 | Ronaldo Rodriguez | 2-1-0 UFC | #2112 |  |
 | Ronaldo Silva | 0-1-0 REC | #7711 | |
 | Ronaldo Souza | 9-7-0 UFC | #969 | |
 | Ronda Rousey | 6-2-0 UFC | #120 | |
 | Rongzhu | 4-3-0 UFC | #287 |  |
 | Ronnie Gibbs | 1-0-0 REC | #2806 | |
 | Ronnie Lawrence | 2-1-0, 1NC UFC | #3494 | |
 | Ronny Hauser | 0-1-0 REC | #7261 | |
 | Ronny Markes | 3-2-0 UFC | #2585 | |
 | Rony Bouzy | 1-2-0 REC | #2157 |  |
 | Rony Henrique | 0-1-0 REC | #7010 | |
 | Rony Jason | 4-4-0, 1NC UFC | #2591 | |