Poids Légers Hommes
 | Rick Davis | 0-1-0 UFC | #7240 |  |
 | Ricky Glenn | 4-6-1 UFC | #2037 | |
 | Ricky Palacios | 1-0-0 REC | #7457 | |
 | Risto Dimitrov | 0-1-0 REC | #7752 |  |
 | Rizwan Ali | 1-0-0 REC | #2460 |  |
 | Robert Varricchio | 0-1-0 REC | #5838 | |
 | Robert Watley | 2-4-0 REC | #1943 | |
 | Roberto de Souza | 4-3-0 REC | #1684 |  |
 | Robin Frank | 0-1-0 REC | #5273 |  |
 | Robson Junior | 1-0-0 REC | #6282 | |
 | Rodrigo de Lima | 0-2-0 UFC | #4710 | |
 | Rodrigo Lidio | 0-2-0 REC | #5962 | |
 | Rodrigo Paiva | 0-1-0 REC | #6164 | |
 | Rodrigo Vargas | 1-3-0 UFC | #3063 |  |
 | Roger Bowling | 0-2-0, 1NC UFC | #5656 | |
 | Roland Pruden | 1-1-0 REC | #3362 | |
 | Roland Szolnoki | 1-0-0 REC | #7940 |  |
 | Rolando Bedoya | 0-4-0 UFC | #3189 |  |
 | Roman David | 1-0-0 REC | #2988 |  |
 | Roman Mitichyan | 1-1-0 UFC | #4384 |  |