Tous les combattants
 | Robert Lucarelli | 0-1-0 UFC | #5647 |  |
 | Robert Maciejowski | 0-1-0 REC | #7094 |  |
 | Robert Pukac | 5-8-0 REC | #1479 |  |
 | Robert Ruchala | 0-2-0 UFC | #1230 | |
 | Robert Valentin | 1-3-0 UFC | #332 |  |
 | Robert Valiev | 0-2-0 REC | #5443 |  |
 | Robert Varricchio | #7779 | | |
 | Robert Watley | 2-3-0 REC | #1663 | |
 | Robert Whittaker | 17-7-0 UFC | #69 |  |
 | Roberta Paim Samad | 1-0-0 REC | #6915 |  |
 | Roberto de Souza | 4-3-0 REC | #1238 | |
 | Roberto Hernandez | 4-2-0 REC | #3203 | |
 | Roberto Romero | 0-2-0 UFC | #2783 |  |
 | Roberto Sanchez | 1-2-0 UFC | #4296 | |
 | Roberto Traven | 1-1-0 UFC | #4490 | |
 | Robin Fosum | 2-0-1 REC | #5370 |  |
 | Robin Frank | 0-1-0 REC | #5202 |  |
 | Robin Roos | 0-3-0 REC | #3544 |  |
 | Robson Junior | 1-0-0 REC | #6710 | |
 | Rocky Lee | 0-1-0 UFC | #4098 |  |
 | Rodion Mubarakshin | 0-2-0 REC | #4638 | |
 | Rodney Kealohi | 0-1-0 REC | #6405 | |
 | Rodney Wallace | 0-3-0 UFC | #4705 | |
 | Rodolfo Bellato | 2-1-1, 1NC UFC | #525 | |
 | Rodolfo Rubio | 0-1-0 UFC | #6247 | |