| Fighter | Record | Last Bout |
|---|---|---|
| Mackenzie Dern | 17-5-0 | 2026-08-15 |
| Macy Chiasson | 11-6-0 | 2026-02-28 |
| Magomed Ankalaev | 22-2-1 (1 NC) | 2026-07-25 |
| Magomed Gadzhiyasulov | 9-1-0 | 2025-01-11 |
| Magomed Tuchalov | 7-0-0 | 2026-07-25 |
| Magomed Zaynukov | 9-0-0 | 2026-07-25 |
| Maheshate | 12-5-0 | 2025-08-23 |
| Mairon Santos | 18-1-0 | 2025-12-06 |
| Malcolm Wellmaker | 10-2-0 | 2026-05-16 |
| Mandel Nallo | 14-4-0 (1 NC) | 2026-10-17 |
| Manel Kape | 23-7-0 | 2026-06-20 |
| Manoel Sousa | 15-1-0 | 2026-08-08 |
| Manolo Zecchini | 11-5-0 | 2026-04-04 |
| Manon Fiorot | 13-2-0 | 2026-09-12 |
| Mansur Abdul-Malik | 9-2-1 | 2026-08-15 |
| Mantas Kondratavicius | 9-1-0 | 2026-03-21 |
| Manuel Torres | 17-4-0 | 2026-06-27 |
| MarQuel Mederos | 12-1-1 | 2026-08-22 |
| Marc-Andre Barriault | 17-11-0 (1 NC) | 2026-10-17 |
| Marcin Prachnio | 17-9-0 | 2025-07-19 |
| Marcin Tybura | 27-12-0 | 2026-08-01 |
| Marcio Barbosa | 19-2-0 | 2026-08-22 |
| Marco Tulio | 14-3-0 | 2026-05-09 |
| Marcus Buchecha | 5-3-1 | 2026-04-25 |
| Marcus McGhee | 11-2-0 | 2026-10-03 |
| Marek Bujlo | 6-1-0 | 2025-11-22 |
| Marina Rodriguez | 17-6-2 | 2025-05-03 |
| Marina Spasic | 7-2-0 | 2026-08-01 |
| Mario Bautista | 18-3-0 | 2026-07-11 |
| Mario Pinto | 13-0-0 | 2026-09-05 |
| Mark Choinski | 8-1-0 | 2025-06-07 |
| Mark Vologdin | 12-5-2 | 2026-08-01 |
| Marlon Vera | 23-12-1 | 2026-09-19 |
| Martin Buday | 16-2-0 | 2025-07-26 |
| Marvin Vettori | 19-10-1 | 2026-10-03 |
| Marwan Rahiki | 9-0-0 | 2026-09-12 |
| Mason Jones | 18-3-0 (1 NC) | 2026-08-22 |
| Mateusz Gamrot | 26-5-0 (1 NC) | 2026-08-08 |
| Mateusz Rebecki | 21-5-0 | 2026-08-01 |
| Matheus Camilo | 11-3-0 | 2026-06-27 |
| Matheus Nicolau | 19-6-1 | 2024-10-19 |
| Matt Frevola | 11-6-1 | 2025-10-18 |
| Matt Schnell | 17-11-0 (1 NC) | 2026-06-06 |
| Matthew Semelsberger | 11-8-0 | 2024-11-09 |
| Matthieu Duclos | 11-3-0 | 2026-09-05 |
| Mauricio Ruffy | 14-2-0 | 2026-09-19 |
| Max Gimenis | 6-2-0 | 2025-11-08 |
| Max Griffin | 20-13-0 | 2026-04-25 |
| Max Holloway | 28-9-0 | 2026-07-11 |
| Maycee Barber | 15-3-0 | 2026-03-28 |