Tous les combattants
 | Roman Kiziuk | 0-1-0 REC | #6063 |  |
 | Roman Kopylov | 7-5-0 UFC | #344 |  |
 | Roman Kurashvili | 1-0-0 REC | #1857 |  |
 | Roman Mitichyan | 1-1-0 UFC | #4293 |  |
 | Roman Ogulchanskiy | 1-1-0 REC | #1964 | |
 | Roman Paulus | 9-5-0 REC | #1413 |  |
 | Roman Puga | 2-0-0 REC | #1144 |  |
 | Roman Salazar | 0-2-0, 1NC UFC | #3797 | |
 | Roman Szymanski | 2-4-0 REC | #2073 |  |
 | Roman Zhukov | 0-1-0 REC | #6948 | |
 | Romero Cotton | 1-2-0 REC | #5404 | |
 | Romero dos Reis | 1-1-0 REC | #3902 |  |
 | Romie Aram | 0-1-0 UFC | #5866 |  |
 | Romulo Oliveira | #8102 | | |
 | 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 |  |