Poids Mouches Hommes
 | Rodrigo Roldan | 0-1-0 REC | #6630 |  |
 | Roldan Sangcha-an | 0-2-0 UFC | #5270 |  |
 | Romain Tango Ngouodjou | 0-2-0 REC | #2137 |  |
 | Romero dos Reis | 1-1-0 REC | #4178 |  |
 | Ronal Siahaan | 1-2-0 REC | #4401 |  |
 | Ronaldo Candido | 0-1-0 REC | #7603 | |
 | Ronaldo Rodriguez | 2-1-0 UFC | #2247 |  |
 | Roque Conceicao | 0-1-0 REC | #5129 | |
 | Roybert Echeverria | 0-1-0 REC | #6836 |  |
 | Ruan Miqueias | #7989 | | |
 | Ruel Panales | 0-2-0 REC | #4579 | |
 | Rui Kato | 0-1-0 REC | #6529 |  |
 | Rustam Debishev | 1-0-0 REC | #7066 |  |
 | Ryan Benoit | 3-6-0 UFC | #2624 |  |
 | Ryan Curtis | 0-1-0 REC | #6921 |  |
 | Ryan Kim | 0-1-0 REC | #7402 |  |
 | Ryoga Arimoto | 0-1-0 REC | #6331 | |
 | Ryoma Shishimoto | 2-1-0 REC | #1052 | |
 | Ryosuke Honda | 0-1-0 REC | #7008 | |
 | Sabir Talmoust | 0-1-0 REC | #5400 |  |