Tous les combattants
 | Ron Stallings | 1-2-0 UFC | #4209 |  |
 | Ron Van Clief | 0-1-0 UFC | #4812 | |
 | Ron Waterman | 2-1-1 UFC | #3838 | |
 | Ronal Siahaan | 1-2-0 REC | #4490 |  |
 | Ronald Jhun | 0-1-0 UFC | #7427 | |
 | Ronald Paradeiser | 11-5-0 REC | #589 |  |
 | Ronaldo Candido | 0-1-0 REC | #7701 |  |
 | Ronaldo Rodriguez | 2-1-0 UFC | #1836 |  |
 | Ronaldo Silva | 0-1-0 REC | #7750 | |
 | Ronaldo Souza | 9-7-0 UFC | #1039 | |
 | Ronan Deegan | 1-0-0 REC | #755 |  |
 | Ronda Rousey | 6-2-0 UFC | #176 | |
 | Rongzhu | 5-3-0 UFC | #256 |  |
 | Ronnie Gibbs | 1-0-0 REC | #3342 | |
 | Ronnie Lawrence | 2-1-0, 1NC UFC | #3692 | |
 | Ronny Hauser | 0-1-0 REC | #7632 | |
 | Ronny Markes | 3-2-0 UFC | #2630 | |
 | Rony Bouzy | 1-2-0 REC | #2628 |  |
 | Rony Henrique | 1-1-0 REC | #1982 | |
 | Rony Jason | 4-4-0, 1NC UFC | #2526 | |
 | Ronys Torres | 0-2-0 UFC | #5236 | |
 | Roosevelt Roberts | 4-5-0, 1NC UFC | #1905 | |
 | Roque Conceicao | 1-1-0 REC | #4716 | |
 | Roque Martinez | 0-3-0 UFC | #4755 |  |
 | Rory Evans | 2-5-0 REC | #3548 |  |