Tous les combattants
 | Roman Zhukov | 0-1-0 REC | #6616 |  |
 | Romero Cotton | 1-2-0 REC | #5097 |  |
 | Romero dos Reis | 1-1-0 REC | #3783 |  |
 | Romie Aram | 0-1-0 UFC | #5750 |  |
 | Ron Becker | 0-1-0 REC | #7191 |  |
 | Ron Faircloth | #7312 | | |
 | Ron Humphrey | 1-0-0 REC | #1926 | |
 | Ron Stallings | 1-2-0 UFC | #3699 | |
 | Ron Van Clief | 0-1-0 UFC | #4570 | |
 | Ron Waterman | 2-1-1 UFC | #3437 | |
 | Ronal Siahaan | 1-2-0 REC | #4085 |  |
 | Ronald Jhun | 0-1-0 UFC | #6806 | |
 | Ronald Paradeiser | 11-4-0 REC | #378 |  |
 | Ronaldo Candido | 0-1-0 REC | #7204 | |
 | Ronaldo Rodriguez | 2-1-0 UFC | #1919 |  |
 | Ronaldo Silva | 0-1-0 REC | #7533 | |
 | Ronaldo Souza | 9-7-0 UFC | #933 | |
 | Ronda Rousey | 6-2-0 UFC | #200 | |
 | Ronnie Gibbs | 1-0-0 REC | #2478 | |
 | Ronnie Lawrence | 2-1-0, 1NC UFC | #3371 | |
 | Ronny Hauser | 0-1-0 REC | #7002 | |
 | Ronny Markes | 3-2-0 UFC | #2488 | |
 | Rony Bouzy | 1-2-0 REC | #1836 |  |
 | Rony Jason | 4-4-0, 1NC UFC | #2570 | |
 | Ronys Torres | 0-2-0 UFC | #4742 | |