| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| John | Makdessi | The Bull | 5' 8" | 155 lbs. | 68.0" | Orthodox | 18 | 9 | 0 | |
| Islam | Makhachev | 5' 10" | 155 lbs. | 70.0" | Southpaw | 27 | 1 | 0 | ||
| Aliev | Makhmud | 5' 6" | 195 lbs. | -- | Southpaw | 0 | 1 | 0 | ||
| Zach | Makovsky | Fun Size | 5' 4" | 125 lbs. | 64.0" | Southpaw | 20 | 8 | 0 | |
| Azat | Maksum | Qazaq | 5' 7" | 125 lbs. | 70.0" | Southpaw | 15 | 2 | 0 | |
| Jeremy | Malaterre | 5' 11" | 155 lbs. | -- | 4 | 2 | 0 | |||
| Fabio | Maldonado | Caipira de Aco | 6' 1" | 205 lbs. | 75.0" | Orthodox | 23 | 11 | 0 | |
| Marvin | Maldonado | The Bulldog | 5' 6" | 135 lbs. | -- | 2 | 4 | 0 | ||
| Bea | Malecki | 5' 9" | 135 lbs. | 74.0" | Orthodox | 4 | 1 | 0 | ||
| Nazareno | Malegarie | El Tigre | 5' 8" | 155 lbs. | -- | 28 | 4 | 0 | ||
| Carl | Malenko | 5' 11" | 200 lbs. | -- | Orthodox | 6 | 4 | 0 | ||
| Jacob | Malkoun | Mamba | 5' 9" | 185 lbs. | 73.0" | Orthodox | 8 | 3 | 0 | |
| Mike | Malott | Proper | 6' 1" | 170 lbs. | 73.0" | Orthodox | 12 | 2 | 1 | |
| Regina | Malpica Rivera | Kill Bill | -- | 135 lbs. | -- | 5 | 0 | 0 | ||
| Dan | Manasoiu | -- | -- | -- | 0 | 0 | 0 | |||
| Troy | Mandaloniz | Rude Boy | 5' 9" | 170 lbs. | -- | Orthodox | 3 | 2 | 0 | |
| Nate | Maness | Mayhem | 5' 10" | 125 lbs. | 72.0" | Orthodox | 16 | 3 | 0 | |
| Michael | Mangan | -- | 155 lbs. | -- | 0 | 3 | 0 | |||
| Gary | Mangat | 5' 7" | 135 lbs. | -- | 15 | 3 | 0 | |||
| George | Mangos | -- | 145 lbs. | -- | 7 | 0 | 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 |