Poids Mi-Moyens Hommes
 | Nikola Jankovic | #8106 |  | |
 | Nikola Joksovic | 4-0-0, 1NC REC | #2019 |  |
 | Nikolay Aleksakhin | 2-4-0, 1NC REC | #1327 |  |
 | Nikolay Veretennikov | 2-4-0 UFC | #985 |  |
 | Noah Lindsey | 0-1-0 REC | #7464 |  |
 | Nordine Taleb | 7-5-0 UFC | #940 |  |
 | O. Mandt Johnsen | 0-1-0 REC | #8005 |  |
 | Oban Elliott | 3-3-0 UFC | #1082 |  |
 | Oganes Voskanyan | 1-2-0 REC | #2493 | |
 | Oleg Dadonov | 1-1-0 REC | #2047 | |
 | Olendet Apouassa Romeo | 0-1-0 REC | #5767 |  |
 | Oliver Enkamp | 0-2-0 UFC | #3812 |  |
 | Olivier Fleurmon | 1-0-0 REC | #2148 | |
 | Olli Santalahti | 2-3-0 REC | #3561 |  |
 | Omar El Dafrawy | 6-1-0 REC | #331 |  |
 | Omar Hussein | 1-2-0 REC | #625 |  |
 | Omar Santana | 0-1-0 REC | #7352 |  |
 | Omari Akhmedov | 9-5-1 UFC | #590 | |
 | Omoyele Gonzalez | 0-1-0 REC | #5907 | |
 | Omran Chaaban | 3-0-0 REC | #1170 | |