| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Jacob | Malkoun | Mamba | 5' 9" | 185 lbs. | 73.0" | Orthodox | 4 | 1 | 0 | |
| Mike | Malott | The Main Attraction | 6' 0" | 145 lbs. | -- | 5 | 1 | 1 | ||
| Troy | Mandaloniz | Rude Boy | 5' 9" | 170 lbs. | -- | Orthodox | 3 | 2 | 0 | |
| Nate | Maness | Mayhem | 5' 10" | 135 lbs. | 72.0" | Orthodox | 13 | 1 | 0 | |
| Michael | Mangan | -- | 155 lbs. | -- | 0 | 3 | 0 | |||
| Gary | Mangat | 5' 7" | 135 lbs. | -- | 15 | 3 | 0 | |||
| Melvin | Manhoef | No Mercy | 5' 9" | 185 lbs. | -- | Orthodox | 30 | 14 | 1 | |
| Melchor | Manibusan | Barracuda | 5' 5" | 154 lbs. | -- | Southpaw | 2 | 4 | 0 | |
| Jon | Manley | 6' 1" | 170 lbs. | -- | Orthodox | 9 | 4 | 0 | ||
| Steve | Mann | 6' 1" | 170 lbs. | -- | 12 | 5 | 0 | |||
| Chris | Manuel | 5' 9" | 135 lbs. | -- | Orthodox | 9 | 7 | 2 | ||
| Jimi | Manuwa | Poster Boy | 6' 1" | 205 lbs. | 79.0" | Orthodox | 17 | 6 | 0 | |
| Cristiano | Marcello | 5' 9" | 155 lbs. | 72.0" | Orthodox | 13 | 6 | 0 | ||
| Jose | Maria | No Chance | 5' 5" | 125 lbs. | -- | Orthodox | 37 | 7 | 0 | |
| Marcos | Mariano | Dhalsim | 6' 1" | 155 lbs. | 76.0" | Switch | 6 | 6 | 0 | |
| Enrique | Marin | Wasabi | 5' 10" | 170 lbs. | -- | 10 | 4 | 0 | ||
| Ronny | Markes | 6' 1" | 185 lbs. | 75.0" | Orthodox | 17 | 5 | 0 | ||
| Rory | Markham | 6' 0" | 170 lbs. | 71.0" | Orthodox | 17 | 6 | 0 | ||
| Randa | Markos | Quiet Storm | 5' 4" | 115 lbs. | 63.0" | Orthodox | 10 | 11 | 1 | |
| Christina | Marks | 5' 7" | 125 lbs. | 69.0" | Orthodox | 8 | 9 | 0 | ||
| Nate | Marquardt | The Great | 6' 0" | 185 lbs. | 74.0" | Orthodox | 35 | 19 | 2 | |
| Danilo | Marques | 6' 6" | 205 lbs. | 77.0" | Orthodox | 11 | 2 | 0 | ||
| Julian | Marquez | The Cuban Missile Crisis | 6' 2" | 185 lbs. | 72.0" | Orthodox | 8 | 2 | 0 | |
| Carmelo | Marrero | The Fury | 6' 0" | 205 lbs. | 73.0" | Orthodox | 16 | 6 | 0 |