Poids Légers Hommes
 | Nikolay Kiosse | 0-1-0 REC | #5555 |  |
 | Nino Sifaoui | 1-1-0 REC | #5582 |  |
 | Noah Bey | 3-2-0 REC | #439 |  |
 | Noah Gasho | 3-0-0 REC | #858 | |
 | Noah Gugnon | 3-1-0 REC | #572 | |
 | Nobumitsu Osawa | 0-1-0 REC | #6625 |  |
| Noe Dellachi | 1-0-0 REC | #2204 | |
 | Nonato Junior | 0-3-0 REC | #3426 |  |
 | Nurkhan Zhumagazy | 2-0-0 REC | #1192 |  |
 | Nursultan Jumadilde | 0-1-0 REC | #7513 |  |
 | Nurullo Aliev | 3-0-0 UFC | #1310 |  |
 | Ognjen Dimic | 0-3-0 REC | #3465 |  |
 | Oleksandr Moisa | 2-1-0 REC | #995 |  |
 | Olivier Aubin-Mercier | 7-5-0 UFC | #180 |  |
 | Omar Morales | 3-4-0 UFC | #2517 |  |
 | Omar Reguigui | 0-1-0, 1NC REC | #4587 |  |
 | Omar Tugarev | 0-2-0 REC | #4263 |  |
 | Omiel Brown | 9-3-0 REC | #388 |  |
 | Ondrej Petrasek | 1-1-0 REC | #6722 |  |
 | Orlando Wilson Prins | 2-4-0 REC | #3192 |  |