Combattants Brésil
| 626 |  | Mackson Lee | 2-1-0 REC | #2634 |  |
| 627 |  | Magno Dias | 0-1-0 REC | #5385 | |
| 628 |  | Magnus Conrado | 0-1-0 REC | #6067 | |
| 629 |  | Magnus Kelly | 0-2-0 REC | #4698 | |
| 630 |  | Mahamed Aly | 0-1-0 REC | #4023 | |
| 631 |  | Maiara Amanajas | 0-1-0 REC | #6740 | |
| 632 |  | Maicon Kobayashi | 0-1-0 REC | #6816 | |
| 633 |  | Maike Linhares | #7352 | | |
| 634 |  | Mailton Azevedo | 0-1-0 REC | #5644 | |
| 635 |  | Maiquel Falcao | 1-0-0 UFC | #5287 | |
| 636 |  | Maira Mazar | 1-2-0 REC | #5937 | |
| 637 |  | Mairon Santos | 4-0-0 UFC | #706 | |
| 638 |  | Manoel Silva | #7615 | | |
| 639 |  | Manoel Sousa | 1-0-0 UFC | #360 | |
| 640 |  | Marcel Adur | 0-1-0 REC | #5012 | |
| 641 |  | Marcel Fortuna | 1-2-0 UFC | #3864 | |
| 642 |  | Marcelo Aguiar | 0-1-0 UFC | #6317 | |
| 643 |  | Marcelo Golm | 1-3-0 UFC | #3178 | |
| 644 |  | Marcelo Guimaraes | 2-2-0 UFC | #3420 | |
| 645 |  | Marcelo Marques | 3-1-0 REC | #1812 | |
| 646 |  | Marcelo Mello | 1-0-0 UFC | #4851 | |
| 647 |  | Marcelo Nunes | 4-1-0 REC | #3117 | |
| 648 |  | Marciano Ferreira | 1-0-0 REC | #7249 | |
| 649 |  | Marcio Alexandre Jr | 0-3-0 UFC | #3878 | |
| 650 |  | Marcio Barbosa | 1-0-0 UFC | #254 | |