Poids Lourds Hommes
 | Mark Kerr | 4-0-0 UFC | #1977 |  |
 | Mark Robinson | #7670 | | |
 | Marsel Sychev | #7699 |  | |
 | Martin Buday | 7-1-0 UFC | #632 |  |
 | Masashi Inada | 1-1-0 REC | #4286 |  |
 | Masutatsu Yano | 0-1-0 UFC | #6724 | |
 | Matheus Fonseca | 0-1-0 REC | #6848 |  |
 | Matheus Scheffel | 3-7-0, 1NC REC | #2906 | |
 | Matt Adams | 3-2-0 REC | #1793 | |
 | Matt Andersen | 0-1-0 UFC | #6092 | |
 | Matt Mitrione | 9-5-0 UFC | #1020 | |
 | Matunga Djikasa | 0-1-0 REC | #5382 |  |
 | Matusalem dos Santos | 0-1-0 REC | #6051 | |
 | Maurice Greene | 4-4-0 UFC | #2053 | |
 | Mauricio Queiroz | 0-1-0 REC | #6819 | |
 | Mauro Cerilli | 1-0-0 REC | #2199 |  |
 | Max Gimenis | 0-1-0 UFC | #2883 | |
 | Max Yoshida | 0-1-0 REC | #5500 | |
 | Maxwell Djantou Nana | 3-1-0 REC | #1268 |  |
 | Melton Bowen | 0-1-0 UFC | #7025 | |