Tous les combattants
 | Rob Wilkinson | 0-2-0 UFC | #1554 |  |
 | Rob Yundt | 0-2-0 UFC | #4696 |  |
 | Robbie Lawler | 15-10-0 UFC | #141 | |
 | Robbie Peralta | 4-3-0, 1NC UFC | #2665 | |
 | Robbie Ring | 0-1-0 REC | #5956 | |
 | Robelis Despaigne | 1-2-0 UFC | #1793 |  |
 | Robert Bryczek | 1-1-0 UFC | #1172 |  |
 | Robert Constantin | 0-1-0 REC | #5192 |  |
 | Robert Drysdale | #7045 | | |
 | Robert Emerson | 3-3-0, 1NC UFC | #2685 | |
 | Robert Hale | 0-1-0 REC | #7154 | |
 | Robert Lucarelli | 0-1-0 UFC | #5474 | |
 | Robert Maciejowski | 0-1-0 REC | #6861 | |
 | Robert Pukac | 5-8-0 REC | #1304 |  |
 | Robert Ruchala | 0-1-0 UFC | #1434 | |
 | Robert Valentin | 0-3-0 UFC | #1530 |  |
 | Robert Valiev | 0-2-0 REC | #5123 |  |
 | Robert Watley | 2-3-0 REC | #1428 | |
 | Robert Whittaker | 17-7-0 UFC | #54 |  |
 | Roberta Paim Samad | 1-0-0 REC | #6738 |  |
 | Roberto de Souza | 4-3-0 REC | #988 | |
 | Roberto Hernandez | 4-2-0 REC | #3076 | |
 | Roberto Romero | 0-2-0 UFC | #2679 |  |
 | Roberto Sanchez | 1-2-0 UFC | #4136 | |
 | Roberto Traven | 1-1-0 UFC | #4385 | |