Tous les combattants
 | Robbie Lawler | 15-10-0 UFC | #161 |  |
 | Robbie Peralta | 4-3-0, 1NC UFC | #2954 | |
 | Robbie Ring | 0-2-0 REC | #4217 | |
 | Robelis Despaigne | 1-2-0 UFC | #684 |  |
 | Robert Bryczek | 1-2-0 UFC | #1452 |  |
 | Robert Constantin | 0-1-0 REC | #5309 |  |
 | Robert Drysdale | #7388 | | |
 | Robert Emerson | 3-3-0, 1NC UFC | #2980 | |
 | Robert Hale | 0-1-0 REC | #7082 | |
 | Robert Lau | #8169 |  | |
 | Robert Lucarelli | 0-1-0 UFC | #5731 | |
 | Robert Maciejowski | 0-1-0 REC | #7484 | |
 | Robert Pukac | 6-8-0 REC | #894 |  |
 | Robert Ruchala | 0-2-0 UFC | #1418 | |
 | Robert Valentin | 2-3-0 UFC | #237 |  |
 | Robert Valiev | 0-2-0 REC | #5514 |  |
 | Robert Varricchio | 0-1-0 REC | #5812 | |
 | Robert Watley | 2-4-0 REC | #1913 | |
 | Robert Whittaker | 18-7-0 UFC | #43 |  |
 | Roberta Paim Samad | 1-0-0 REC | #7005 |  |
 | Roberto de Souza | 4-3-0 REC | #1671 | |
 | Roberto Hernandez | 4-2-0 REC | #3463 | |
 | Roberto Romero | 0-2-0 UFC | #3032 |  |
 | Roberto Sanchez | 1-2-0 UFC | #4417 | |
 | Roberto Traven | 1-1-0 UFC | #4678 | |