Sorted alphabetically by last name · 2715 fighters
| Name | Nickname | |
|---|---|---|
| MH | Mark Hall | |
| MH | Mark Holst | "Boots" |
| MH | Mark Hominick | "The Machine" |
| MH | Mark Hughes | |
| MH | Mark Hunt | "Super Samoan" |
| MK | Mark Kerr | "The Smashing Machine" |
| MM | Mark Madsen | "The Olympian" |
| MM | Mark Munoz | "The Filipino Wrecking Machine" |
| MR | Mark Robinson | "White Rhino" |
| MS | Mark Scanlon |