Sorted alphabetically by last name · 2715 fighters
| Name | Nickname | |
|---|---|---|
| MD | Martin Day | "The Spartan" |
| MK | Martin Kampmann | "The Hitman" |
| MS | Martin Sano | "Spartan" |
| MS | Martin Svensson | |
| ME | Marvin Eastman | "The Beastman" |
| MV | Marvin Vettori | "The Italian Dream" |
| MR | Marwan Rahiki | "Freaky" |
| MM | Maryna Moroz | "Iron Lady" |
| MK | Masanori Kanehara | |
| MF | Masio Fullen | "Lobo" |