Poids Mouches Hommes
 | Mateus Mendonca | 0-3-0 UFC | #3514 |  |
 | Matheus Nicolau | 7-4-0 UFC | #1292 | |
 | Matheus Severino | 2-1-0 REC | #1550 | |
 | Matheus Silva | 0-1-0 REC | #5744 | |
 | Matt Schnell | 7-9-0, 1NC UFC | #831 |  |
 | Matthew Friel | 0-2-0 REC | #5115 |  |
 | Mauro Gutierrez | 0-1-0 REC | #6709 |  |
 | Maxim Kozhevnikov | 1-0-0 REC | #3386 |  |
 | Maximilien Vallot | 1-1-0 REC | #5253 |  |
 | Micah Haas | 1-0-0 REC | #5597 | |
 | Michael Aljarouj | 1-0-0 REC | #7743 |  |
 | Michael Reyes | 0-1-0 REC | #5442 | |
 | Michelangelo Lupoli | 3-3-0 REC | #2794 |  |
 | Miguel Sanson | 1-1-0 REC | #5355 | |
 | Mitch Raposo | 2-2-0 UFC | #580 | |
| Mizamiddin Mirlan Uulu | #7918 |  | |
 | Mkhitar Barseghyan | 3-1-0 REC | #1462 |  |
 | Mohammed Walid | 1-2-0 REC | #2833 |  |
 | Mokhmad Khamzatov | 0-1-0 REC | #6200 | |
 | Mountassir Boutouta | 0-1-0 REC | #4572 |  |