Poids Plumes Hommes
 | Oleksii Polischuck | 4-4-0 REC | #1799 |  |
 | Oliver Tero | 1-1-0 REC | #2093 |  |
 | Olivier Murad | 1-0-0 REC | #5587 |  |
 | Ollie Schmid | 0-1-0 UFC | #3148 |  |
 | Ortsa Gudaev | 1-1-0 REC | #5262 |  |
 | Oskar Stachura | 1-1-0 REC | #630 |  |
 | Otto Rodrigues | 1-1-0 REC | #6590 |  |
 | Pablo Garza | 3-3-0 UFC | #3175 |  |
 | Pablo Radjabou | 1-0-0 REC | #7897 |  |
 | Pascal Hintzen | 1-2-0 REC | #6146 |  |
 | Pat Sabatini | 9-2-0 UFC | #289 | |
 | Pat Schilling | 0-2-0 UFC | #4313 | |
 | Patricio Pitbull | 1-2-0 UFC | #771 | |
 | Patrick Cornett | 0-1-0 REC | #6942 | |
 | Patrick Williams | 1-3-0 UFC | #3700 | |
 | Patryk Kaczmarczyk | 6-1-0 REC | #351 | |
 | Patryk Likus | 0-2-0 REC | #6903 | |
 | Paul Marghitas | 3-0-0 REC | #1557 |  |
 | Paull McBain | 2-0-0 REC | #3270 |  |
 | Pawel Politylo | 0-1-0 REC | #7754 | |