Tous les combattants
 | Robbie Peralta | 4-3-0, 1NC UFC | #2924 |  |
 | Robbie Ring | 0-1-0 REC | #6415 | |
 | Robelis Despaigne | 1-2-0 UFC | #498 |  |
 | Robert Bryczek | 1-2-0 UFC | #1339 |  |
 | Robert Constantin | 0-1-0 REC | #5346 |  |
 | Robert Drysdale | #7331 | | |
 | Robert Emerson | 3-3-0, 1NC UFC | #2935 | |
 | Robert Hale | 0-1-0 REC | #7161 | |
 | Robert Lucarelli | 0-1-0 UFC | #5601 | |
 | Robert Maciejowski | 0-1-0 REC | #7314 | |
 | Robert Pukac | 6-8-0 REC | #663 |  |
 | Robert Ruchala | 0-2-0 UFC | #1419 | |
 | Robert Valentin | 1-3-0 UFC | #565 |  |
 | Robert Valiev | 0-2-0 REC | #5498 |  |
 | Robert Varricchio | 0-1-0 REC | #6123 | |
 | Robert Watley | 2-3-0 REC | #1951 | |
 | Robert Whittaker | 17-7-0 UFC | #61 |  |
 | Roberta Paim Samad | 1-0-0 REC | #7103 |  |
 | Roberto de Souza | 4-3-0 REC | #1490 | |
 | Roberto Hernandez | 4-2-0 REC | #3346 | |
 | Roberto Romero | 0-2-0 UFC | #2906 |  |
 | Roberto Sanchez | 1-2-0 UFC | #4421 | |
 | Roberto Traven | 1-1-0 UFC | #4610 | |
 | Robin Fosum | 2-0-1 REC | #5408 |  |
 | Robin Frank | 0-1-0 REC | #5208 |  |