Poids Mouches Hommes
 | Rodrigo Roldan | 0-1-0 REC | #6091 |  |
 | Roldan Sangcha-an | 0-2-0 UFC | #4983 |  |
 | Romain Tango Ngouodjou | 0-2-0 REC | #1948 |  |
 | Romero dos Reis | 1-1-0 REC | #3851 |  |
 | Ronal Siahaan | 1-2-0 REC | #4139 |  |
 | Ronaldo Candido | 0-1-0 REC | #7266 | |
 | Ronaldo Rodriguez | 2-1-0 UFC | #2066 |  |
 | Roque Conceicao | 0-1-0 REC | #5293 | |
 | Roybert Echeverria | 0-1-0 REC | #6599 |  |
 | Ruan Miqueias | #7652 | | |
 | Ruel Panales | 0-2-0 REC | #4306 | |
 | Rui Kato | 0-1-0 REC | #6587 |  |
 | Ruslan Abiltarov | 0-1-0 REC | #6315 |  |
 | Rustam Debishev | 1-0-0 REC | #6741 | |
 | Ryan Benoit | 3-6-0 UFC | #2546 |  |
 | Ryan Curtis | 0-1-0 REC | #6870 |  |
 | Ryan Kim | 0-1-0 REC | #7234 |  |
 | Ryoga Arimoto | 0-1-0 REC | #5966 | |
 | Ryosuke Honda | 0-1-0 REC | #6347 | |
 | Sabir Talmoust | 0-1-0 REC | #5253 |  |