Tous les combattants
 | Rolles Gracie | 0-1-0 UFC | #6462 |  |
 | Romain Debienne | 3-5-0 REC | #1049 |  |
 | Romain Tango Ngouodjou | 0-2-0 REC | #2200 | |
 | Roman Bogatov | 0-1-0 UFC | #7672 |  |
 | Roman David | 1-0-0 REC | #3263 |  |
 | Roman Dolidze | 9-6-0 UFC | #426 |  |
 | Roman Faraldo | 2-2-0 REC | #4386 |  |
 | Roman Kiziuk | 0-1-0 REC | #6733 |  |
 | Roman Kopylov | 8-5-0 UFC | #118 | |
 | Roman Kurashvili | 1-0-0 REC | #2400 | |
 | Roman Mitichyan | 1-1-0 UFC | #4494 |  |
 | Roman Ogulchanskiy | 1-1-0 REC | #2506 | |
 | Roman Paulus | 10-6-0 REC | #566 |  |
 | Roman Puga | 3-0-0 REC | #736 | |
 | Roman Salazar | 0-2-0, 1NC UFC | #4137 | |
 | Roman Szymanski | 2-4-0 REC | #2507 |  |
 | Roman Zhukov | 0-1-0 REC | #7562 | |
 | Romello Union | 0-1-0 REC | #6430 | |
 | Romero Cotton | 1-2-0 REC | #5853 | |
 | Romero dos Reis | 1-1-0 REC | #4254 | |
 | Romie Aram | 0-1-0 UFC | #6293 |  |
| Romulo Oliveira | 0-1-0 REC | #6261 | |
 | Ron Becker | 0-1-0 REC | #7586 |  |
 | Ron Faircloth | #7757 | | |
 | Ron Humphrey | 2-0-0 REC | #570 | |