| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Dong Hyun | Ma | Maestro | 5' 11" | 155 lbs. | 70.0" | Orthodox | 16 | 11 | 3 | |
| Pawan | Maan | 5' 7" | 155 lbs. | 70.0" | Orthodox | 7 | 3 | 1 | ||
| William | Macario | Patolino | 5' 11" | 170 lbs. | 75.0" | Orthodox | 9 | 3 | 0 | |
| Jason | MacDonald | The Athlete | 6' 3" | 185 lbs. | 80.0" | Orthodox | 25 | 16 | 0 | |
| Rob | MacDonald | Maximus | 6' 3" | 205 lbs. | 78.0" | Orthodox | 5 | 4 | 0 | |
| Rory | MacDonald | Red King | 6' 0" | 170 lbs. | 76.0" | Orthodox | 19 | 4 | 0 | |
| Ryan | MacDonald | Main Event | 5' 11" | 135 lbs. | 71.0" | Switch | 10 | 2 | 0 | |
| Clayton | MacFarlane | -- | 170 lbs. | -- | 4 | 1 | 0 | |||
| Ilima | Macfarlane | 5' 4" | 125 lbs. | -- | 6 | 0 | 0 | |||
| Valesca | Machado | Tina Black | 5' 4" | 115 lbs. | 63.0" | Orthodox | 8 | 3 | 0 | |
| Caio | Machado | Bigfoot | 6' 4" | 250 lbs. | 78.0" | Southpaw | 8 | 4 | 1 | |
| Ian | Machado Garry | The Future | 6' 3" | 170 lbs. | 74.0" | Orthodox | 16 | 1 | 0 | |
| Lyoto | Machida | The Dragon | 6' 1" | 185 lbs. | 74.0" | Southpaw | 24 | 8 | 0 | |
| War | Machine | 5' 11" | 170 lbs. | -- | Orthodox | 14 | 5 | 0 | ||
| Anthony | Macias | Mad Dog | 5' 9" | 185 lbs. | -- | Switch | 26 | 18 | 0 | |
| Pauline | Macias | PITA | 5' 4" | 115 lbs. | 64.0" | Southpaw | 4 | 1 | 0 | |
| Reza | Madadi | Mad Dog | 5' 11" | 155 lbs. | 73.0" | Orthodox | 14 | 6 | 0 | |
| Don | Madge | Magic Man | 6' 0" | 155 lbs. | 72.0" | Southpaw | 9 | 3 | 1 | |
| Ryan | Madigan | 6' 0" | 170 lbs. | -- | Orthodox | 5 | 3 | 0 | ||
| Victor | Madrigal | Periquito | 5' 7" | 135 lbs. | 71.0" | Orthodox | 15 | 5 | 0 | |
| Jon | Madsen | 6' 0" | 240 lbs. | 72.0" | Orthodox | 8 | 2 | 0 | ||
| Mark | Madsen | The Olympian | 5' 8" | 155 lbs. | 72.0" | Orthodox | 12 | 2 | 0 | |
| Yoshiro | Maeda | 5' 7" | 139 lbs. | 68.0" | Southpaw | 35 | 16 | 5 | ||
| Leonardo | Mafra | Macarrao | 5' 10" | 155 lbs. | 70.0" | Orthodox | 13 | 4 | 0 | |
| Vinny | Magalhaes | Pezao | 6' 3" | 205 lbs. | 75.0" | Orthodox | 14 | 9 | 0 | |
| Vinicius | Magalhaes | Draculinho | -- | 145 lbs. | -- | 2 | 1 | 0 | ||
| Caio | Magalhaes | Hellboy | 6' 1" | 185 lbs. | 73.0" | Orthodox | 10 | 3 | 0 | |
| Bernardo | Magalhaes | Trekko | 5' 9" | 155 lbs. | -- | Orthodox | 13 | 4 | 0 | |
| Eric | Magana | -- | -- | -- | 1 | 1 | 0 | |||
| Brandon | Magana | -- | 170 lbs. | -- | Orthodox | 6 | 2 | 0 | ||
| Angela | Magana | Your Majesty | 5' 1" | 115 lbs. | 65.0" | Orthodox | 11 | 9 | 0 | |
| Neil | Magny | The Haitian Sensation | 6' 3" | 170 lbs. | 80.0" | Orthodox | 31 | 14 | 0 | |
| Raimond | Magomedaliev | 6' 1" | 170 lbs. | 75.0" | Orthodox | 10 | 2 | 0 | ||
| Ibragim | Magomedov | 6' 0" | 250 lbs. | -- | Orthodox | 22 | 8 | 1 | ||
| Rashid | Magomedov | Highlander | 5' 9" | 155 lbs. | 70.0" | Orthodox | 20 | 2 | 0 | |
| Ruslan | Magomedov | Leopard | 6' 3" | 242 lbs. | 78.0" | Orthodox | 14 | 1 | 0 | |
| Abus | Magomedov | 6' 2" | 185 lbs. | 78.0" | Orthodox | 28 | 7 | 1 | ||
| Shara | Magomedov | Bullet | 6' 2" | 185 lbs. | 73.0" | Orthodox | 16 | 1 | 0 | |
| Murtazali | Magomedov | The Highlight | 5' 9" | 145 lbs. | 70.0" | Orthodox | 10 | 0 | 0 | |
| Zabit | Magomedsharipov | 6' 1" | 145 lbs. | 73.0" | Orthodox | 18 | 1 | 0 | ||
| John | Maguire | The One | 5' 9" | 155 lbs. | 69.0" | Southpaw | 24 | 9 | 0 | |
| Lolohea | Mahe | -- | -- | -- | 10 | 4 | 1 | |||
| Michelle | Maher | -- | 145 lbs. | -- | 1 | 2 | 0 | |||
| Maheshate | 6' 0" | 155 lbs. | 71.0" | Orthodox | 10 | 5 | 0 | |||
| Bill | Mahood | The Butcher | 6' 3" | 200 lbs. | -- | Orthodox | 20 | 7 | 1 | |
| Klayton | Mai | 5' 9" | 125 lbs. | -- | 8 | 3 | 0 | |||
| Demian | Maia | 6' 1" | 170 lbs. | 72.0" | Southpaw | 28 | 11 | 0 | ||
| Jennifer | Maia | 5' 4" | 125 lbs. | 64.0" | Orthodox | 21 | 10 | 1 | ||
| Nayara | Maia | Capita | 5' 5" | 125 lbs. | 66.0" | Orthodox | 7 | 1 | 1 | |
| Roshan | Mainam | The Indian Notorious | -- | 135 lbs. | -- | 6 | 3 | 0 | ||
| Levan | Makashvili | The Hornet | 5' 8" | 145 lbs. | 68.0" | Orthodox | 15 | 2 | 1 | |
| John | Makdessi | The Bull | 5' 8" | 155 lbs. | 68.0" | Orthodox | 18 | 9 | 0 | |
| Islam | Makhachev | 5' 10" | 170 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 | 3 | 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 | 13 | 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 | 5' 10" | 145 lbs. | 70.0" | Switch | 7 | 1 | 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 | |||
| Marnic | Mann | The Sawed-Off Savage | 5' 0" | 115 lbs. | 64.0" | Southpaw | 6 | 3 | 0 | |
| Dylan | Mantello | The Quiet Man | 6' 1" | 155 lbs. | 73.0" | Orthodox | 8 | 4 | 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 | |
| Dom | Mar Fan | Street Buddha | 5' 11" | 155 lbs. | 75.0" | Orthodox | 8 | 2 | 0 | |
| Cristiano | Marcello | 5' 9" | 155 lbs. | 72.0" | Orthodox | 13 | 6 | 0 | ||
| Daniel | Marcos | Soncora | 5' 7" | 135 lbs. | 69.0" | Orthodox | 17 | 1 | 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 | ||
| Chepe | Mariscal | Machine Gun | 5' 7" | 145 lbs. | 69.0" | Orthodox | 18 | 6 | 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 | 11 | 12 | 1 | |
| Christina | Marks | 5' 7" | 125 lbs. | 69.0" | Orthodox | 8 | 9 | 0 | ||
| Brendon | Marotte | The Kid | 5' 9" | 145 lbs. | 70.0" | Orthodox | 8 | 3 | 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 | 4 | 0 | ||
| Julian | Marquez | The Cuban Missile Crisis | 6' 2" | 185 lbs. | 72.0" | Orthodox | 9 | 6 | 0 | |
| Carmelo | Marrero | The Fury | 6' 0" | 205 lbs. | 73.0" | Orthodox | 16 | 6 | 0 | |
| Cesar | Marscucci | -- | -- | -- | 3 | 2 | 0 | |||
| John | Marsh | 6' 0" | 265 lbs. | -- | Orthodox | 8 | 7 | 0 | ||
| CJ | Marsh | -- | -- | -- | 5 | 7 | 0 | |||
| Eliot | Marshall | Fire | 6' 2" | 205 lbs. | 77.0" | Orthodox | 10 | 4 | 0 | |
| Doug | Marshall | The Rhino | 5' 10" | 205 lbs. | -- | Orthodox | 18 | 8 | 0 | |
| David | Marshall | 6' 2" | 170 lbs. | -- | 8 | 4 | 0 | |||
| Francis | Marshall | Fire | 5' 9" | 145 lbs. | 72.0" | Orthodox | 8 | 3 | 0 | |
| Jack | Marshman | The Hammer | 6' 0" | 185 lbs. | 73.0" | Orthodox | 23 | 10 | 0 | |
| Terry | Martin | 5' 8" | 185 lbs. | 71.0" | Orthodox | 23 | 11 | 0 | ||
| Eric | Martin | -- | -- | -- | 0 | 1 | 0 | |||
| Justin | Martin | 6' 0" | 185 lbs. | -- | 4 | 3 | 0 | |||
| Dave | Martin | 6' 0" | 205 lbs. | -- | 0 | 2 | 0 | |||
| Joe | Martin | 5' 9" | 170 lbs. | -- | 6 | 8 | 0 | |||
| Anthony Rocco | Martin | 6' 0" | 170 lbs. | 73.0" | Orthodox | 17 | 6 | 0 | ||
| Mallory | Martin | 5' 4" | 115 lbs. | 63.0" | Orthodox | 7 | 5 | 0 | ||
| Michal | Martinek | 6' 2" | 230 lbs. | -- | Southpaw | 7 | 1 | 0 | ||
| Adrian Luna | Martinetti | 5' 8" | 135 lbs. | 71.0" | 17 | 1 | 0 | |||
| Rainy | Martinez | 6' 0" | 199 lbs. | -- | Orthodox | 0 | 2 | 0 | ||
| Danny | Martinez | The Gremlin | 5' 6" | 125 lbs. | 67.0" | Orthodox | 21 | 8 | 0 | |
| Alonzo | Martinez | Zo Diddy | 5' 10" | 155 lbs. | -- | 42 | 20 | 1 | ||
| Henry | Martinez | Sicario | 5' 7" | 155 lbs. | 69.0" | Southpaw | 9 | 4 | 0 | |
| Jonathan | Martinez | Dragon | 5' 8" | 135 lbs. | 70.0" | Southpaw | 19 | 6 | 0 | |
| Poppies | Martinez | The Tachi Kid | 5' 9" | 145 lbs. | -- | 29 | 11 | 0 | ||
| Andrew | Martinez | Mickey D | 5' 9" | 215 lbs. | -- | 9 | 6 | 0 | ||
| Mana | Martinez | ManaBoi | 5' 10" | 135 lbs. | 70.0" | Orthodox | 10 | 4 | 0 | |
| Victor | Martinez | The Brick | 5' 8" | 155 lbs. | 70.0" | Orthodox | 13 | 6 | 0 | |
| Roque | Martinez | 5' 10" | 250 lbs. | 72.0" | Orthodox | 15 | 8 | 2 | ||
| Melissa | Martinez | Super Mely | 5' 2" | 115 lbs. | 66.0" | Southpaw | 8 | 2 | 0 | |
| Julieta | Martinez | The Ninja Ferret | 5' 1" | 115 lbs. | 62.0" | Orthodox | 8 | 0 | 0 | |
| David | Martinez | Doctor | 5' 5" | 135 lbs. | 67.0" | Orthodox | 13 | 1 | 0 | |
| Wagner da Conceicao | Martins | Zuluzinho | 6' 7" | 390 lbs. | -- | Orthodox | 9 | 8 | 0 | |
| Adriano | Martins | 5' 10" | 155 lbs. | 72.0" | Southpaw | 28 | 9 | 0 | ||
| Lucas | Martins | Mineiro | 6' 0" | 145 lbs. | 72.0" | Southpaw | 19 | 3 | 0 | |
| Max | Martyniouk | Payne | -- | 155 lbs. | -- | 1 | 1 | 0 | ||
| Bristol | Marunde | 6' 1" | 170 lbs. | 75.0" | Orthodox | 16 | 10 | 0 | ||
| Shoji | Maruyama | 5' 7" | 139 lbs. | -- | Orthodox | 12 | 9 | 1 | ||
| Kazuma | Maruyama | Gluttony | 5' 11" | 155 lbs. | 72.0" | Orthodox | 11 | 7 | 0 | |
| Islem | Masraf | Lightning | 6' 0" | 205 lbs. | 74.0" | Southpaw | 3 | 1 | 0 | |
| Mike | Massenzio | The Master of Disaster | 6' 2" | 185 lbs. | 73.0" | Southpaw | 13 | 9 | 0 | |
| Jameel | Massouh | 5' 10" | 145 lbs. | 72.0" | Orthodox | 26 | 9 | 0 | ||
| Tiffany | Masters | Rainbow Renegade | 5' 3" | 115 lbs. | 65.0" | Orthodox | 2 | 1 | 0 | |
| Jorge | Masvidal | Gamebred | 5' 11" | 170 lbs. | 74.0" | Orthodox | 35 | 17 | 0 | |
| Al | Matavao | Sweetness | 5' 8" | 205 lbs. | 67.0" | Orthodox | 8 | 3 | 0 | |
| Tateki | Matsuda | Tech | 5' 7" | 125 lbs. | -- | Orthodox | 13 | 8 | 0 | |
| Arisa | Matsuda | 5' 3" | 115 lbs. | 64.0" | Orthodox | 7 | 0 | 0 | ||
| Daijiro | Matsui | 5' 9" | 200 lbs. | -- | Orthodox | 13 | 29 | 7 | ||
| Toki | Matsui | 5' 6" | 125 lbs. | 65.0" | Orthodox | 6 | 1 | 0 | ||
| Koichiro | Matsumoto | 5' 7" | 145 lbs. | -- | 15 | 3 | 1 | |||
| Jean | Matsumoto | 5' 6" | 135 lbs. | 68.0" | Orthodox | 17 | 1 | 0 | ||
| Koyomi | Matsushima | 5' 7" | 145 lbs. | 66.0" | Orthodox | 13 | 6 | 0 | ||
| Naoki | Matsushita | 5' 6" | 155 lbs. | -- | Orthodox | 12 | 16 | 11 | ||
| AJ | Matthews | 5' 11" | 185 lbs. | -- | 8 | 7 | 0 | |||
| Jake | Matthews | The Celtic Kid | 5' 11" | 170 lbs. | 73.0" | Orthodox | 22 | 8 | 0 | |
| Connor | Matthews | The Controller | 5' 8" | 145 lbs. | 71.0" | Switch | 7 | 4 | 0 | |
| Claudio | Mattos | Popeye | -- | 185 lbs. | -- | Orthodox | 5 | 4 | 0 | |
| John | Matua | 6' 2" | 400 lbs. | -- | Orthodox | 1 | 4 | 0 | ||
| Francesco | Maturi | -- | -- | -- | 0 | 1 | 0 | |||
| Vladimir | Matyushenko | The Janitor | 6' 0" | 205 lbs. | 74.0" | Orthodox | 27 | 8 | 0 | |
| Miranda | Maverick | Fear The | 5' 3" | 125 lbs. | 65.0" | Southpaw | 17 | 6 | 0 | |
| Nick | Maximov | 6' 0" | 185 lbs. | 76.0" | Southpaw | 8 | 2 | 0 | ||
| Elaina | Maxwell | Beef | 5' 8" | 145 lbs. | -- | Orthodox | 7 | 4 | 0 | |
| Jeremy | May | 6' 1" | 185 lbs. | -- | 13 | 10 | 0 | |||
| Jack | May | The Outlaw | 6' 8" | 255 lbs. | -- | Switch | 9 | 3 | 0 | |
| Don'Tale | Mayes | Lord Kong | 6' 6" | 260 lbs. | 81.0" | Orthodox | 11 | 9 | 0 | |
| Gray | Maynard | 5' 9" | 155 lbs. | 70.0" | Orthodox | 13 | 7 | 1 | ||
| Brooke | Mayo | The Bully | 5' 7" | 125 lbs. | -- | 0 | 1 | 0 | ||
| Gina | Mazany | Danger | 5' 6" | 125 lbs. | 68.0" | Southpaw | 7 | 6 | 0 | |
| Sabina | Mazo | Colombian Queen | 5' 7" | 125 lbs. | 70.0" | Orthodox | 9 | 4 | 0 | |
| Francesco | Mazzeo | 6' 3" | 205 lbs. | 75.0" | Orthodox | 4 | 1 | 0 | ||
| Scott | McAfee | 5' 8" | 155 lbs. | -- | Orthodox | 14 | 7 | 0 | ||
| Bobby | McAndrews | -- | -- | -- | Orthodox | 1 | 3 | 0 | ||
| Michael | McBride | 6' 1" | 155 lbs. | -- | Orthodox | 8 | 3 | 0 | ||
| Ian | McCall | Uncle Creepy | 5' 5" | 125 lbs. | 64.0" | Orthodox | 13 | 5 | 1 | |
| Molly | McCann | Meatball | 5' 4" | 115 lbs. | 62.0" | Orthodox | 14 | 8 | 0 | |
| Charles | McCarthy | Chainsaw | 5' 10" | 185 lbs. | 71.0" | Orthodox | 10 | 5 | 0 | |
| Eric | McConico | 6' 0" | 185 lbs. | 77.0" | Southpaw | 10 | 3 | 1 | ||
| Sean | McCorkle | 6' 7" | 265 lbs. | 81.0" | Orthodox | 17 | 7 | 0 | ||
| Danni | McCormack | Mac | 5' 4" | 125 lbs. | 62.0" | Southpaw | 9 | 2 | 0 | |
| Paddy | McCorry | 6' 3" | 185 lbs. | 73.0" | Switch | 7 | 1 | 0 | ||
| Kris | McCray | Savage | 6' 0" | 170 lbs. | 76.0" | Orthodox | 8 | 5 | 0 | |
| Tamdan | McCrory | The Barncat | 6' 4" | 185 lbs. | 76.0" | Switch | 14 | 5 | 0 | |
| Rob | McCullough | Razor | 5' 9" | 155 lbs. | 69.0" | Orthodox | 19 | 8 | 0 | |
| Justin | McCully | The Insane One | 6' 1" | 225 lbs. | 73.0" | Orthodox | 11 | 5 | 2 | |
| Robert | McDaniel | Bubba | 6' 3" | 185 lbs. | 75.0" | Southpaw | 28 | 10 | 0 | |
| Michael | McDonald | The Black Sniper | 5' 11" | 205 lbs. | -- | Orthodox | 1 | 1 | 0 | |
| Scott | McDonald | -- | -- | -- | 1 | 0 | 0 | |||
| Michael | McDonald | Mayday | 5' 9" | 135 lbs. | 70.0" | Orthodox | 17 | 4 | 0 | |
| Josh | McDonald | -- | 185 lbs. | -- | 9 | 5 | 0 | |||
| Miles | McDonald | 5' 7" | 115 lbs. | -- | 2 | 1 | 0 | |||
| Justin | McElfresh | 6' 6" | 205 lbs. | -- | Orthodox | 6 | 4 | 0 | ||
| Drew | McFedries | The Massacre | 6' 0" | 185 lbs. | 72.0" | Southpaw | 12 | 7 | 0 | |
| Liam | McGeary | 6' 6" | 205 lbs. | -- | 12 | 2 | 0 | |||
| Gan | McGee | The Giant | 6' 10" | 265 lbs. | -- | Orthodox | 13 | 5 | 0 | |
| Court | McGee | The Crusher | 5' 11" | 170 lbs. | 75.0" | Orthodox | 23 | 14 | 0 | |
| Marcus | McGhee | The Maniac | 5' 8" | 135 lbs. | 69.0" | Orthodox | 10 | 2 | 0 | |
| Ryan | McGillivray | The Kid | 5' 11" | 170 lbs. | -- | 12 | 0 | 1 | ||
| Ryan | McGivern | 6' 0" | 185 lbs. | -- | Orthodox | 13 | 7 | 0 | ||
| Jack | McGlaughlin | -- | -- | -- | Orthodox | 1 | 4 | 0 | ||
| Conor | McGregor | The Notorious | 5' 9" | 155 lbs. | 74.0" | Southpaw | 22 | 6 | 0 | |
| Greg | McIntyre | 5' 10" | 155 lbs. | -- | Orthodox | 6 | 4 | 0 | ||
| Antonio | McKee | Mandingo | 5' 8" | 155 lbs. | -- | Southpaw | 29 | 6 | 2 | |
| AJ | McKee | Mercenary | 5' 10" | 145 lbs. | -- | 8 | 0 | 0 | ||
| Rhys | McKee | Skeletor | 6' 2" | 170 lbs. | 78.0" | Orthodox | 14 | 7 | 1 | |
| Cory | McKenna | Poppins | 5' 3" | 115 lbs. | 58.0" | Orthodox | 8 | 4 | 0 | |
| Tim | McKenzie | 6' 0" | 185 lbs. | 74.0" | Orthodox | 14 | 9 | 0 | ||
| Cody | McKenzie | 6' 0" | 155 lbs. | 72.0" | Switch | 16 | 10 | 0 | ||
| Terrance | McKinney | T. Wrecks | 5' 10" | 155 lbs. | 73.0" | Switch | 17 | 7 | 0 | |
| Brian | McLaughlin | 5' 9" | 155 lbs. | -- | 6 | 2 | 0 | |||
| Jason | McLean | 5' 5" | 145 lbs. | -- | 6 | 7 | 0 | |||
| Garreth | McLellan | Soldier Boy | 6' 1" | 185 lbs. | 72.0" | Southpaw | 13 | 6 | 0 | |
| Sara | McMann | 5' 6" | 135 lbs. | 66.0" | Orthodox | 13 | 6 | 0 | ||
| Tommy | McMillen | Gun | 6' 0" | 145 lbs. | 74.0" | Orthodox | 9 | 0 | 0 | |
| James | McSweeney | The Hammer | 6' 4" | 230 lbs. | 77.0" | Switch | 15 | 15 | 0 | |
| Charles | McTorry | -- | -- | -- | 3 | 0 | 0 | |||
| Jackson | McVey | The Moose | 6' 4" | 185 lbs. | 77.0" | Southpaw | 6 | 1 | 0 | |
| Daniel | McWilliams | The Animal | 6' 1" | 185 lbs. | -- | 15 | 37 | 0 | ||
| Tim | Means | The Dirty Bird | 6' 2" | 170 lbs. | 75.0" | Orthodox | 33 | 17 | 1 | |
| Yancy | Medeiros | 5' 10" | 155 lbs. | 75.0" | Orthodox | 15 | 8 | 0 | ||
| Anistavio | Medeiros | Gasparzinho | 5' 6" | 145 lbs. | -- | Orthodox | 19 | 10 | 0 | |
| Kaline | Medeiros | The Dark Angel | 5' 3" | 115 lbs. | -- | 8 | 5 | 0 | ||
| MarQuel | Mederos | 5' 10" | 155 lbs. | 69.0" | Orthodox | 11 | 1 | 0 | ||
| Uros | Medic | The Doctor | 6' 1" | 170 lbs. | 71.0" | Southpaw | 11 | 3 | 0 | |
| Todd | Medina | El Tiburon | 5' 10" | 193 lbs. | -- | Southpaw | 11 | 9 | 0 | |
| Jason | Medina | 5' 9" | 180 lbs. | -- | 21 | 15 | 1 | |||
| Emil | Meek | Valhalla | 5' 11" | 170 lbs. | 74.0" | Switch | 9 | 5 | 1 | |
| Sanford Alton | Meeks | 6' 5" | 265 lbs. | 75.0" | Orthodox | 1 | 1 | 0 | ||
| Gerald | Meerschaert | GM3 | 6' 1" | 185 lbs. | 77.0" | Southpaw | 37 | 20 | 0 | |
| Frank | Megallon | 5' 10" | 185 lbs. | -- | Southpaw | 2 | 3 | 0 | ||
| Derrick | Mehmen | Caveman | 6' 4" | 205 lbs. | -- | 19 | 9 | 0 | ||
| Miika | Mehmet | -- | 205 lbs. | -- | Orthodox | 3 | 5 | 0 | ||
| Jordan | Mein | Young Gun | 6' 0" | 170 lbs. | 73.0" | Orthodox | 31 | 12 | 0 | |
| Bryce | Mejia | 6' 1" | 170 lbs. | -- | 3 | 1 | 0 | |||
| Brian | Melancon | 5' 8" | 170 lbs. | -- | Orthodox | 7 | 3 | 0 | ||
| Brandon | Melendez | The Murderer | 5' 11" | 155 lbs. | -- | Southpaw | 25 | 25 | 0 | |
| Gilbert | Melendez | El Nino | 5' 9" | 145 lbs. | 73.0" | Orthodox | 22 | 8 | 0 | |
| Nair | Melikyan | Ahalkalakski | 5' 6" | 155 lbs. | -- | 11 | 0 | 0 | ||
| Marcelo | Mello | 5' 7" | 170 lbs. | -- | Southpaw | 1 | 0 | 0 | ||
| Fabio | Mello | 5' 5" | 155 lbs. | -- | Southpaw | 11 | 8 | 0 | ||
| Vanessa | Melo | 5' 5" | 135 lbs. | 65.0" | Orthodox | 11 | 8 | 0 | ||
| Antonio | Mendes | Samurai | 6' 3" | 205 lbs. | 77.0" | Southpaw | 18 | 13 | 0 | |
| Chad | Mendes | Money | 5' 6" | 145 lbs. | 66.0" | Orthodox | 18 | 5 | 0 | |
| Augusto | Mendes | Tanquinho | 5' 6" | 135 lbs. | 65.0" | Orthodox | 6 | 2 | 0 | |
| Eddie | Mendez | 5' 10" | 185 lbs. | -- | 8 | 3 | 1 | |||
| Mateus | Mendonca | Bocao | 5' 6" | 125 lbs. | 71.0" | Orthodox | 10 | 3 | 0 | |
| Luis | Mendoza | -- | 155 lbs. | -- | 0 | 1 | 0 | |||
| Pietro | Menga | 5' 7" | 125 lbs. | 68.0" | Southpaw | 13 | 0 | 0 | ||
| Alonzo | Menifield | Atomic | 6' 0" | 205 lbs. | 76.0" | Orthodox | 17 | 5 | 1 | |
| Ivan | Menjivar | The Pride of El Salvador | 5' 6" | 145 lbs. | 64.0" | Orthodox | 25 | 12 | 0 | |
| Dave | Menne | The Warrior | 5' 10" | 170 lbs. | -- | Orthodox | 45 | 17 | 2 | |
| Steve | Mensing | The Machine | 5' 11" | 185 lbs. | -- | Orthodox | 9 | 13 | 2 | |
| Buck | Meredith | 6' 2" | 185 lbs. | -- | 3 | 3 | 0 | |||
| Adam | Meredith | 6' 2" | 170 lbs. | -- | 5 | 3 | 0 | |||
| Nick | Meregali | -- | -- | -- | 0 | 0 | 0 | |||
| Joe | Merritt | 6' 0" | 170 lbs. | -- | Orthodox | 7 | 2 | 0 | ||
| Bia | Mesquita | 5' 4" | 135 lbs. | 67.0" | Orthodox | 6 | 0 | 0 | ||
| Jeremiah | Metcalf | 6' 1" | 185 lbs. | -- | Orthodox | 13 | 7 | 0 | ||
| Jonathan | Meunier | District | 6' 3" | 170 lbs. | -- | Switch | 8 | 1 | 0 | |
| Yaotzin | Meza | 5' 9" | 145 lbs. | 71.0" | Orthodox | 21 | 11 | 0 | ||
| Guy | Mezger | 6' 1" | 200 lbs. | -- | Orthodox | 30 | 14 | 2 | ||
| David | Mgoyan | 5' 9" | 145 lbs. | 70.0" | Orthodox | 7 | 1 | 0 | ||
| Jonathan | Micallef | The Captain | 6' 0" | 170 lbs. | 77.0" | Southpaw | 8 | 1 | 0 | |
| Brandon | Michaels | 5' 9" | 185 lbs. | -- | 4 | 14 | 0 | |||
| Andreas | Michailidis | The Spartan | 6' 0" | 170 lbs. | 76.0" | Orthodox | 13 | 6 | 0 | |
| David | Michaud | BullDawg | 5' 9" | 155 lbs. | -- | Orthodox | 11 | 3 | 0 | |
| Chris | Mickle | 5' 9" | 145 lbs. | -- | Orthodox | 30 | 21 | 2 | ||
| Zachary | Micklewright | 6' 0" | 155 lbs. | 74.0" | Southpaw | 15 | 3 | 0 | ||
| Kristof | Midoux | The Hurricane | 6' 1" | 220 lbs. | -- | Orthodox | 6 | 10 | 0 | |
| Keith | Mielke | 5' 8" | 185 lbs. | -- | 0 | 5 | 0 | |||
| Chris | Mierzwiak | 6' 1" | 185 lbs. | -- | 5 | 3 | 0 | |||
| Gabriel | Miglioli | Biel | 5' 8" | 170 lbs. | -- | 9 | 9 | 0 | ||
| Bojan | Mihajlovic | 5' 11" | 205 lbs. | 73.0" | Orthodox | 10 | 6 | 0 | ||
| Billy | Miles | The Kid | 5' 10" | 170 lbs. | -- | Orthodox | 2 | 2 | 0 | |
| Pat | Miletich | The Croatian Sensation | 5' 10" | 170 lbs. | -- | Orthodox | 29 | 7 | 2 | |
| Curtis | Millender | Curtious | 6' 2" | 170 lbs. | 76.0" | Orthodox | 17 | 5 | 0 | |
| Phillip | Miller | 5' 11" | 185 lbs. | -- | Orthodox | 16 | 0 | 0 | ||
| Jason | Miller | Mayhem | 6' 1" | 185 lbs. | -- | Orthodox | 23 | 10 | 0 | |
| Dan | Miller | 6' 1" | 185 lbs. | 74.0" | Orthodox | 14 | 8 | 0 | ||
| Jim | Miller | A-10 | 5' 8" | 155 lbs. | 71.0" | Southpaw | 38 | 19 | 0 | |
| Cole | Miller | Magrinho | 6' 1" | 145 lbs. | 73.0" | Orthodox | 21 | 11 | 0 | |
| Henry | Miller | Sentoryu | 5' 7" | 270 lbs. | -- | Southpaw | 6 | 16 | 0 | |
| Micah | Miller | Maverick | 6' 0" | 145 lbs. | -- | Orthodox | 20 | 8 | 0 | |
| Aaron | Miller | Blood Spiller | 5' 9" | 145 lbs. | -- | 14 | 10 | 0 | ||
| Mo | Miller | Moshow | 5' 8" | 135 lbs. | 72.0" | Orthodox | 6 | 0 | 0 | |
| Juliana | Miller | Killer | 5' 7" | 125 lbs. | 66.0" | Orthodox | 5 | 3 | 0 | |
| Ty | Miller | Thriller | 6' 2" | 170 lbs. | 77.0" | Orthodox | 6 | 0 | 0 | |
| Trent | Miller | The Terminator | 5' 9" | 185 lbs. | 72.0" | Orthodox | 8 | 3 | 0 | |
| Eddy | Millis | 6' 1" | 185 lbs. | -- | 0 | 2 | 0 | |||
| Che | Mills | Beautiful | 6' 1" | 170 lbs. | 76.0" | Orthodox | 16 | 10 | 0 | |
| Adam | Milstead | The Prototype | 6' 3" | 205 lbs. | 76.0" | Orthodox | 8 | 4 | 0 | |
| Alberto | Mina | Soldier of God | 6' 0" | 170 lbs. | 77.0" | Orthodox | 13 | 1 | 0 | |
| Vitaly | Minakov | 6' 2" | 249 lbs. | -- | 20 | 0 | 0 | |||
| Mario | Mingaj | 6' 3" | 185 lbs. | 78.0" | Orthodox | 7 | 1 | 0 | ||
| Darrick | Minner | 5' 7" | 145 lbs. | 69.0" | Orthodox | 26 | 14 | 0 | ||
| Mike | Minniger | -- | -- | -- | 0 | 0 | 0 | |||
| Ikuhisa | Minowa | Minowaman | 5' 9" | 181 lbs. | -- | Orthodox | 60 | 42 | 8 | |
| Carlton | Minus | Clutch | 5' 10" | 170 lbs. | 75.0" | Orthodox | 10 | 3 | 0 | |
| Stipe | Miocic | 6' 4" | 240 lbs. | 80.0" | Orthodox | 20 | 5 | 0 | ||
| Frank | Mir | 6' 3" | 264 lbs. | 79.0" | Southpaw | 18 | 11 | 0 | ||
| Juan | Miranda | -- | 155 lbs. | -- | 7 | 5 | 0 | |||
| Mario | Miranda | 6' 3" | 185 lbs. | 74.0" | Orthodox | 14 | 7 | 0 | ||
| Vitor | Miranda | Lex Luthor | 6' 1" | 185 lbs. | 77.0" | Orthodox | 12 | 5 | 0 | |
| Gabriel | Miranda | Fly | 5' 11" | 145 lbs. | 71.0" | Orthodox | 17 | 8 | 0 | |
| Damir | Mirenic | Wolf | 6' 0" | 185 lbs. | -- | Orthodox | 9 | 4 | 0 | |
| Kazuo | Misaki | Hitman | 5' 8" | 183 lbs. | -- | Orthodox | 25 | 11 | 2 | |
| Toby | Misech | 2 Quick | 5' 8" | 145 lbs. | -- | Southpaw | 9 | 5 | 0 | |
| Dokonjonosuke | Mishima | 5' 7" | 155 lbs. | -- | Southpaw | 21 | 7 | 2 | ||
| Felix Lee | Mitchell | -- | -- | -- | Orthodox | 2 | 7 | 0 | ||
| David | Mitchell | Daudi | 6' 0" | 170 lbs. | 75.0" | Orthodox | 22 | 7 | 0 | |
| Danny | Mitchell | The Cheesecake Assassin | 6' 2" | 170 lbs. | -- | Orthodox | 19 | 9 | 1 | |
| Brad | Mitchell | 5' 11" | 145 lbs. | -- | 4 | 2 | 0 | |||
| Clay | Mitchell | 6' 2" | 185 lbs. | -- | 1 | 2 | 0 | |||
| Bryce | Mitchell | Thug Nasty | 5' 10" | 135 lbs. | 70.0" | Southpaw | 18 | 4 | 0 | |
| Maurice | Mitchell | The AK Kid | 5' 9" | 145 lbs. | -- | Orthodox | 11 | 2 | 0 | |
| Terrence | Mitchell | 5' 10" | 135 lbs. | 74.0" | Orthodox | 14 | 4 | 0 | ||
| Roman | Mitichyan | 5' 10" | 170 lbs. | -- | Orthodox | 8 | 3 | 0 | ||
| Matt | Mitrione | 6' 3" | 265 lbs. | 82.0" | Switch | 12 | 5 | 0 | ||
| Eiji | Mitsuoka | 5' 7" | 145 lbs. | -- | Southpaw | 18 | 9 | 2 | ||
| Hiromitsu | Miura | 5' 9" | 170 lbs. | 71.0" | Orthodox | 12 | 7 | 0 | ||
| Jonathan | Mix | 6' 0" | 168 lbs. | -- | 7 | 4 | 0 | |||
| Patchy | Mix | No Love | 5' 11" | 135 lbs. | 70.0" | Southpaw | 20 | 3 | 0 | |
| Tomoya | Miyashita | 5' 7" | 139 lbs. | -- | Southpaw | 17 | 9 | 7 | ||
| Kazuyuki | Miyata | 5' 8" | 139 lbs. | -- | Orthodox | 15 | 9 | 0 | ||
| Motoki | Miyazawa | 5' 11" | 168 lbs. | -- | Southpaw | 7 | 3 | 0 | ||
| Takeya | Mizugaki | 5' 7" | 135 lbs. | 69.0" | Orthodox | 21 | 11 | 2 | ||
| Mizuki | 5' 3" | 115 lbs. | 65.0" | Orthodox | 16 | 6 | 0 | |||
| Tatsuya | Mizuno | 6' 1" | 205 lbs. | -- | Southpaw | 16 | 12 | 1 | ||
| Roxanne | Modafferi | The Happy Warrior | 5' 7" | 125 lbs. | 69.0" | Orthodox | 25 | 21 | 0 | |
| Bobby | Moffett | The Wolfman | 5' 10" | 145 lbs. | 73.0" | Orthodox | 13 | 5 | 0 | |
| Bronson | Mohika | -- | 135 lbs. | -- | 1 | 1 | 0 | |||
| Nate | Mohr | 5' 9" | 155 lbs. | 72.0" | Orthodox | 9 | 7 | 0 | ||
| Renato | Moicano | 5' 11" | 155 lbs. | 72.0" | Orthodox | 20 | 7 | 1 | ||
| Thiago | Moises | 5' 9" | 155 lbs. | 70.0" | Orthodox | 19 | 9 | 0 | ||
| Muhammad | Mokaev | The Punisher | 5' 7" | 125 lbs. | 70.0" | Orthodox | 13 | 0 | 0 | |
| Ashkan | Mokhtarian | The Assassin | 5' 6" | 125 lbs. | 67.0" | Southpaw | 13 | 3 | 0 | |
| Suman | Mokhtarian | 5' 8" | 145 lbs. | 72.0" | Orthodox | 8 | 5 | 0 | ||
| Dan | Molina | 5' 10" | 216 lbs. | -- | 13 | 9 | 0 | |||
| Jeff | Molina | El Jefe | 5' 6" | 125 lbs. | 69.0" | Orthodox | 11 | 2 | 0 | |
| Rudyard | Moncayo | 5' 10" | 195 lbs. | -- | Orthodox | 0 | 3 | 0 | ||
| Hidetaka | Monma | 6' 0" | 168 lbs. | -- | Orthodox | 18 | 11 | 4 | ||
| Jeff | Monson | The Snowman | 5' 9" | 247 lbs. | 74.0" | Orthodox | 60 | 26 | 1 | |
| Darrell | Montague | Mongoose | 5' 6" | 125 lbs. | 67.0" | Southpaw | 13 | 5 | 0 | |
| Michelle | Montague | The Wild One | 5' 9" | 135 lbs. | 68.0" | Southpaw | 7 | 0 | 0 | |
| Andrew | Montanez | -- | 185 lbs. | -- | 9 | 12 | 1 | |||
| Jose | Montanha | -- | 265 lbs. | -- | 6 | 1 | 0 | |||
| Augusto | Montano | Dodger | 6' 1" | 170 lbs. | 73.0" | Orthodox | 15 | 3 | 0 | |
| Erick | Montano | Perry | 6' 0" | 170 lbs. | 73.0" | Orthodox | 7 | 5 | 0 | |
| Nicco | Montano | 5' 5" | 135 lbs. | 65.0" | Southpaw | 5 | 3 | 0 | ||
| Antonio | Monteiro | Junior Negao | 5' 7" | 145 lbs. | 70.0" | Orthodox | 17 | 5 | 1 | |
| Sofia | Montenegro | La Bruja | 5' 6" | 125 lbs. | 67.0" | Orthodox | 6 | 2 | 0 | |
| Alberto | Montes | The Promise | 5' 7" | 145 lbs. | 69.0" | Orthodox | 11 | 1 | 0 | |
| Steve | Montgomery | The Creepy Weasel | 6' 4" | 185 lbs. | -- | Southpaw | 9 | 5 | 0 | |
| James | Moontasri | Moon Walker | 5' 10" | 170 lbs. | 71.0" | Switch | 9 | 5 | 0 | |
| Homer | Moore | The Rock | 5' 10" | 205 lbs. | -- | Orthodox | 26 | 9 | 2 | |
| Todd | Moore | 5' 9" | 170 lbs. | 71.0" | Southpaw | 16 | 7 | 0 | ||
| Nate | Moore | 6' 0" | 170 lbs. | -- | 8 | 4 | 0 | |||
| Dustin | Moore | 5' 4" | 125 lbs. | -- | 0 | 2 | 0 | |||
| Taylor | Moore | 5' 10" | 135 lbs. | 70.0" | Southpaw | 10 | 5 | 0 | ||
| Sergio | Moraes | The Panther | 6' 0" | 170 lbs. | 72.0" | Orthodox | 14 | 6 | 1 | |
| Marlon | Moraes | Magic | 5' 6" | 135 lbs. | 67.0" | Orthodox | 23 | 10 | 1 | |
| Sheymon | Moraes | 5' 8" | 145 lbs. | 72.0" | Orthodox | 11 | 4 | 0 | ||
| John | Moraga | 5' 6" | 125 lbs. | 66.0" | Orthodox | 19 | 7 | 0 | ||
| Ricardo | Morais | The Mutant | 6' 8" | 270 lbs. | -- | Orthodox | 10 | 4 | 1 | |
| Leonardo | Morales | Chimy | 5' 8" | 135 lbs. | -- | Southpaw | 6 | 2 | 0 | |
| Albert | Morales | The Warrior | 5' 9" | 135 lbs. | 72.0" | Orthodox | 7 | 4 | 1 | |
| Joseph | Morales | Bopo | 5' 6" | 125 lbs. | 69.0" | Switch | 14 | 2 | 0 | |
| Vince | Morales | Vandetta | 5' 7" | 135 lbs. | 70.0" | Orthodox | 16 | 10 | 0 | |
| Omar | Morales | Venezuelan Fighter | 5' 11" | 155 lbs. | 73.0" | Orthodox | 11 | 4 | 0 | |
| Michael | Morales | 6' 0" | 170 lbs. | 79.0" | Orthodox | 18 | 0 | 0 | ||
| Sarah | Moras | Cheesecake | 5' 7" | 135 lbs. | 67.0" | Orthodox | 6 | 8 | 0 | |
| Christian | Morecraft | 6' 6" | 260 lbs. | 81.0" | Orthodox | 8 | 3 | 0 | ||
| Joe | Moreira | 5' 11" | 195 lbs. | -- | Southpaw | 2 | 2 | 0 | ||
| Richardson | Moreira | Rick Monstro | 6' 2" | 185 lbs. | -- | Orthodox | 7 | 4 | 0 | |
| Gisele | Moreira | 5' 6" | 135 lbs. | -- | Orthodox | 8 | 3 | 0 | ||
| Vinicius | Moreira | Mamute | 6' 4" | 205 lbs. | 76.0" | Orthodox | 9 | 5 | 0 | |
| Jesse | Moreng | Arturo | 5' 7" | 145 lbs. | -- | Orthodox | 9 | 1 | 0 | |
| Brandon | Moreno | The Assassin Baby | 5' 7" | 125 lbs. | 70.0" | Orthodox | 23 | 8 | 2 | |
| Mike | Moreno | El Palo Duro | 6' 0" | 185 lbs. | -- | 6 | 5 | 0 | ||
| Dan | Moret | The Hitman | 6' 0" | 155 lbs. | 73.0" | Southpaw | 13 | 6 | 0 | |
| Sammy | Morgan | The Squeeze | 5' 10" | 170 lbs. | -- | Orthodox | 18 | 12 | 0 | |
| Peggy | Morgan | The Daywalker | 6' 1" | 135 lbs. | -- | 4 | 4 | 0 | ||
| Alexander | Morgan | The Chess Master | 5' 10" | 145 lbs. | 71.0" | Orthodox | 11 | 5 | 0 | |
| Alex | Morono | The Great White | 5' 11" | 170 lbs. | 72.0" | Orthodox | 24 | 12 | 0 | |
| Maryna | Moroz | Iron Lady | 5' 7" | 125 lbs. | 67.0" | Orthodox | 11 | 6 | 0 | |
| Sergey | Morozov | 5' 6" | 135 lbs. | 67.0" | Orthodox | 19 | 5 | 0 | ||
| Brad | Morris | 6' 2" | 205 lbs. | -- | Orthodox | 10 | 6 | 0 | ||
| Scott | Morris | 5' 10" | 210 lbs. | -- | Orthodox | 2 | 1 | 0 | ||
| Anthony | Morrison | Cheesesteak | 5' 7" | 145 lbs. | -- | Orthodox | 20 | 12 | 0 | |
| Jack | Morrison | 5' 11" | 205 lbs. | -- | 0 | 3 | 0 | |||
| Harry | Moskowitz | Dirty | 6' 5" | 275 lbs. | -- | Orthodox | 6 | 12 | 0 | |
| Carlos | Mota | Tizil | 5' 4" | 125 lbs. | 69.0" | Orthodox | 8 | 2 | 0 | |
| Miki | Motono | 5' 2" | 115 lbs. | 63.0" | Southpaw | 8 | 5 | 0 | ||
| Juan | Mott | 6' 0" | 190 lbs. | -- | Switch | 3 | 4 | 0 | ||
| Nikolas | Motta | Iron | 5' 9" | 155 lbs. | 70.0" | Orthodox | 15 | 6 | 0 | |
| Flavio Luiz | Moura | 5' 11" | 183 lbs. | -- | Open Stance | 19 | 7 | 0 | ||
| Eduarda | Moura | Ronda | 5' 6" | 125 lbs. | 67.0" | Orthodox | 12 | 1 | 0 | |
| Gegard | Mousasi | 6' 2" | 185 lbs. | 76.0" | Orthodox | 42 | 6 | 2 | ||
| Kris | Moutinho | 5' 7" | 135 lbs. | 68.0" | Southpaw | 14 | 7 | 0 | ||
| Kin | Moy | Kong | 5' 5" | 135 lbs. | -- | 8 | 3 | 0 | ||
| Jamie | Moyle | 5' 1" | 115 lbs. | 65.0" | Orthodox | 4 | 3 | 0 | ||
| Askar | Mozharov | 6' 3" | 205 lbs. | 74.0" | Orthodox | 19 | 13 | 0 | ||
| Garrett | Mueller | 5' 9" | 135 lbs. | -- | 3 | 3 | 0 | |||
| Lauren | Mueller | Princess Tiger | 5' 5" | 125 lbs. | 67.0" | Orthodox | 5 | 3 | 0 | |
| Belal | Muhammad | Remember the Name | 5' 11" | 170 lbs. | 72.0" | Orthodox | 24 | 4 | 0 | |
| Fazlo | Mulabitinovic | -- | 135 lbs. | -- | 4 | 2 | 0 | |||
| Quinn | Mulhern | 6' 3" | 155 lbs. | -- | Orthodox | 18 | 4 | 0 | ||
| James | Mulheron | 5' 10" | 243 lbs. | 73.0" | Orthodox | 11 | 2 | 0 | ||
| Jamie | Mullarkey | 6' 0" | 155 lbs. | 74.0" | Orthodox | 18 | 8 | 0 | ||
| Jim | Mullen | 6' 1" | 215 lbs. | -- | Southpaw | 0 | 2 | 0 | ||
| Melissa | Mullins | No Mess | 5' 7" | 135 lbs. | 68.0" | Orthodox | 7 | 2 | 0 | |
| Ananias | Mulumba | Metal | 5' 5" | 145 lbs. | 70.0" | Switch | 9 | 3 | 0 | |
| Pedro | Munhoz | The Young Punisher | 5' 6" | 135 lbs. | 65.0" | Orthodox | 20 | 10 | 0 | |
| Andre | Muniz | Sergipano | 6' 1" | 185 lbs. | 78.0" | Southpaw | 24 | 8 | 0 | |
| Mark | Munoz | The Filipino Wrecking Machine | 6' 0" | 185 lbs. | 71.0" | Orthodox | 14 | 6 | 0 | |
| Alexander | Munoz | 5' 9" | 155 lbs. | 72.0" | Switch | 7 | 2 | 0 | ||
| Johnny | Munoz | Kid Kvenbo | 5' 9" | 135 lbs. | 71.0" | Orthodox | 12 | 4 | 0 | |
| Andy | Murad | The Tooth Fairy | 5' 9" | 185 lbs. | -- | 15 | 2 | 0 | ||
| Olivier | Murad | Warrior of God | 5' 10" | 145 lbs. | 72.0" | Southpaw | 6 | 0 | 0 | |
| Makhmud | Muradov | 6' 2" | 185 lbs. | 75.0" | Orthodox | 26 | 8 | 0 | ||
| Kazunari | Murakami | 6' 1" | 220 lbs. | -- | Orthodox | 5 | 5 | 0 | ||
| Ryuichi | Murata | 5' 8" | 183 lbs. | -- | Orthodox | 8 | 3 | 1 | ||
| Kanako | Murata | 5' 1" | 115 lbs. | 62.0" | Orthodox | 12 | 3 | 0 | ||
| Ailiya | Muratbek | -- | 155 lbs. | -- | 9 | 2 | 0 | |||
| Vince | Murdock | 5' 6" | 145 lbs. | 64.0" | Orthodox | 12 | 4 | 0 | ||
| Samandar | Murodov | 6' 1" | 170 lbs. | 75.0" | Orthodox | 11 | 0 | 0 | ||
| Tom | Murphy | 6' 2" | 227 lbs. | -- | Southpaw | 8 | 0 | 0 | ||
| Ian | Murphy | 6' 1" | 185 lbs. | -- | Orthodox | 1 | 1 | 0 | ||
| Jon | Murphy | Man of Faith | 6' 3" | 260 lbs. | -- | Orthodox | 6 | 4 | 0 | |
| Lauren | Murphy | Lucky | 5' 5" | 125 lbs. | 67.0" | Orthodox | 16 | 7 | 0 | |
| Patrick | Murphy | 6' 0" | 170 lbs. | -- | 5 | 3 | 0 | |||
| Lerone | Murphy | The Miracle | 5' 9" | 145 lbs. | 73.0" | Orthodox | 17 | 0 | 1 | |
| Lee | Murray | Lightning | 6' 3" | 185 lbs. | -- | Orthodox | 8 | 2 | 1 | |
| Jesse | Murray | Hollywood | 6' 3" | 205 lbs. | 78.0" | Orthodox | 8 | 4 | 0 | |
| Khalid | Murtazaliev | 6' 0" | 185 lbs. | 76.0" | Orthodox | 14 | 2 | 0 | ||
| Azamat | Murzakanov | The Professional | 5' 10" | 205 lbs. | 71.0" | Southpaw | 16 | 0 | 0 | |
| Josias | Musasa | The KO Wizard | 5' 8" | 135 lbs. | 74.0" | Southpaw | 8 | 2 | 0 | |
| Tofiq | Musayev | 5' 9" | 155 lbs. | 69.0" | Orthodox | 22 | 6 | 0 | ||
| Nicholas | Musoke | Nico | 6' 0" | 170 lbs. | 75.0" | Orthodox | 13 | 5 | 0 | |
| Andre | Mussi | 6' 3" | 242 lbs. | -- | Orthodox | 11 | 5 | 0 | ||
| Magomed | Mustafaev | The Sniper | 5' 8" | 155 lbs. | 71.0" | Orthodox | 14 | 4 | 0 | |
| Max | Mustaki | 6' 0" | 155 lbs. | -- | Orthodox | 6 | 3 | 0 | ||
| Elvis | Mutapcic | The King | 6' 0" | 185 lbs. | 72.0" | Orthodox | 15 | 6 | 1 | |
| Fiona | Muxlow | 5' 4" | 145 lbs. | -- | 6 | 3 | 0 | |||
| Ho Bae | Myeon | 5' 11" | 168 lbs. | -- | Orthodox | 13 | 5 | 1 |