Tous les combattants
 | Roman Dolidze | 9-6-0 UFC | #354 |  |
 | Roman Faraldo | 2-2-0 REC | #4171 |  |
 | Roman Kiziuk | 0-1-0 REC | #6329 |  |
 | Roman Kopylov | 7-5-0 UFC | #445 |  |
 | Roman Kurashvili | 1-0-0 REC | #2147 | |
 | Roman Mitichyan | 1-1-0 UFC | #4364 |  |
 | Roman Ogulchanskiy | 1-1-0 REC | #2249 | |
 | Roman Paulus | 10-5-0 REC | #503 |  |
 | Roman Puga | 3-0-0 REC | #463 | |
 | Roman Salazar | 0-2-0, 1NC UFC | #3988 | |
 | Roman Szymanski | 2-4-0 REC | #2315 |  |
 | Roman Zhukov | 0-1-0 REC | #7186 | |
 | Romero Cotton | 1-2-0 REC | #5584 | |
 | Romero dos Reis | 1-1-0 REC | #4055 |  |
 | Romie Aram | 0-1-0 UFC | #6040 |  |
 | Romulo Oliveira | 0-1-0 REC | #6874 | |
 | Ron Becker | 0-1-0 REC | #7450 |  |
 | Ron Faircloth | #7593 | | |
 | Ron Humphrey | 2-0-0 REC | #2470 | |
 | Ron Stallings | 1-2-0 UFC | #4034 | |
 | Ron Van Clief | 0-1-0 UFC | #4744 | |
 | Ron Waterman | 2-1-1 UFC | #3690 | |
 | Ronal Siahaan | 1-2-0 REC | #4357 |  |
 | Ronald Jhun | 0-1-0 UFC | #7264 | |
 | Ronald Paradeiser | 11-5-0 REC | #537 | |