| 2801 | Mega Ego Party Powers | Banjo Powers, Matt Hayter, Party Guy Ty, Violet Blitz | 2023- | | |
| 2802 | Megalomaniacs | Jeremy Madrox, Marion Fontaine, Rickey Shane Page | 2012-2013 | | |
| 2803 | Melbourne Crew | Morphine, Ryan O'Hare, Josh Shooter, Scotty Slayer | 2011 | | |
| 2804 | Melt Brain Dancing | CHANGO, PSYCHO, Shinya Ishida | 2020- | | |
| 2805 | Memphis Mafia | Doug Gilbert, Eddie Gilbert, Tony Anthony | - | | |
| 2806 | Memphis Mafia | Elvis Harrison, Simon Hill, Rob Roy, Duke Stone, Ivan /Ivan Roy | 2018- | | |
| 2807 | Men Of Business | Big Business , Gino Martino, Jimmy Cash, Paul E. Normous, Rocky Badabino, Danny Jaxx, Fred Curry Jr. | 2006-2010 | | |
| 2808 | Menace 2 Society | Adam Flash, Romeo Valentino/Nick Tarentino, Quinn Nash | 1996 | | |
| 2809 | Menace To Society | Grynder, Big Bad Bomar, Viktor Volkov, Aurora | 2007-2008 | | |
| 2810 | Mercenaries | Bill Anderson/Billy Anderson, Tim Patterson , Louie Spicolli, Cincinnati Red | - | | |
| 2811 | Mercenarios Americanos | Mercenario I, Mercenario II, Mercenario III | 1989-1992 | | |
| 2812 | Merchants Of Death | Murder-1, Pandora , Orion Bishop, Johnny Slaughter, Brian Blaze, Geter, Skirra Corvus, Wicked Nemesis | - | | |
| 2813 | Messengers | Branden Juarez, Seto Kobara, Tim Boston | 2019- | | |
| 2814 | Messiahs Of A New Age | Dustin Rayz, Lou Roberts, Vincent Nothing, Jon Moxley | 2007-2008 | | |
| 2815 | Mest Family | Mark Mest, Troy Mest, Horace Mest, Yancey Mest | 1997 | | |
| 2816 | Metal Domination | Alpha Joe, Delta Rex, Pedrolo | 2018- | | |
| 2817 | Metal Vampire | Dick Togo, Touru Owashi, Seiya Morohashi, Koo | 2007-2008 | | |
| 2818 | Mexa Boy's | Aguila Oriental, Noisy Boy, Spider Fly, Super Boy | 2023- | | |
| 2819 | MexiSquad | Bandido , Flamita, Rey Horus | 2020-2022 | | |
| 2820 | Mexican Powers | Crazy Boy, Ultimo Gladiador, Juventud Guerrera, Psicosis , Joe Lider, Extreme Tiger | 2006-2008 | | |
| 2821 | Mexican Powers | Crazy Boy, Joe Lider, Nino Hamburguesa, El Alebrije , Atomic Boy, Cuije , Juventud Guerrera | 2013-2014 | | |
| 2822 | Mexico Amigos | Pepe Michinoku, Miguel Hayashi Jr., El NOSAWA Mendoza, Ray Minoru | 2007-2007 | | |
| 2823 | Miami Boyz | Baby Keef, Chris Malachite, Puma Johnson, Xander Maddox | 2023- | | |
| 2824 | Michaels Inc. | Quentin Michaels, Johnny Swinger, Cru Jones, Shaun Banks, Zero Tolerance, Caleb Konley, Vik Dalishus, Hale Collins | 2007-2008 | | |
| 2825 | Michigan Invasion | N8 Mattson, Eddie Venom/Eddie V, Jaimy Coxxx, Tyler Hollister, Truth Martini, Zach Gowen | 2004-2008 | | |
| 2826 | Michinoku Brothers | TAKA Michinoku, TAKU Michinoku, TOMO Michinoku | 2006 | | |
| 2827 | Midas Security | Tommy Lee, King Kendo, Doug Williams, Joey Ozbourne, Scott Fusion, Alex Young, Bash, Steve Quintain, SAS , Mitchell Starr, Nemesis , Big J Johnson, Tank O Rooney, Sam Naylor, Robin Lekime, Alex Drooge, Groza | 2011- | | |
| 2828 | Midas Stable | Brett Semtex, Ricky Knight Jr., Swede, Ruffneck, Tommy Lee, Drew Marshall, PJ Knight | 2023- | | |
| 2829 | Midnight 3 | Carlo Cannon, Emman Azman, Zhan Wen | 2023- | | |
| 2830 | Midnight Delight | Billy Blade, Richie Slade, Sean Casey, Vega Velocity, Tiana, Kadin Anthony, Kevin El Divino | 2011-2018 | | |
| 2831 | Midnight Express | Dennis Condrey, Norvell Austin, Randy Rose | 1981-1983 | | |
| 2832 | Midnight Society | Anjul Stone/Angel Stone, Blake Grayson/Greyson, Eric Watts, American Oni, Pris | 2013-2014 | | |
| 2833 | Midnight Tribe | David King, Jackson Duvalier, Sage Scott, Jake St. Patrick | 2019- | | |
| 2834 | Midwest Militia | Allysin Kay, Sassy Stephie, Jessicka Havok | 2011-2016 | | |
| 2835 | Mighty Dragon Family | The Eurasian Dragon, Mighty Mighty, Big Good Jack, Wam Bam Bellows | 2019- | | |
| 2836 | Mighty Morphin Power Rangers | Blue Power Ranger, Green Power Ranger, Red Power Ranger, White Power Ranger | 2008- | | |
| 2837 | Mighty Yankees | Mighty Yankee #1 , Mighty Yankee #2 , Mighty Yankee #3 | - | | |
| 2838 | Militia | Jim Cornette, The Punisher, Buddy Landel, Terry Gordy, Tommy Rich, Al Snow, Unabomb, Sgt. Rock | 1995-1995 | | |
| 2839 | Militia | Tre , The Warship & Tommy Hellfire | 2009-2010 | | |
| 2840 | Mill City Hooligans | Bryan Logan, Matt Logan, Chase Del Monte | 2012-2019 | | |
| 2841 | Millenial Falcons | Dwight Kidd, Richard Shhhnary & The Berkeley Brawler | 2017- | | |
| 2842 | Millenials | Adam Ryder, Jordie Taylor, Nick Price | 2018- | | |
| 2843 | Millenials | Brendan Divine, Danny Divine, Daniel Moon | 2019- | | |
| 2844 | Millenium | Alex Franco, Yaroslav Derzhavin, Zack Neyton | 2020- | | |
| 2845 | Millennials | Dean Brady, James Kray, Luke Santamaria, Tom Byrne | 2016-2019 | | |
| 2846 | Millennium Warriors | Chief Red Eagle, Thunder Wolf , Night Hawk | 1999 | | |
| 2847 | Miller Brothers | Bill Miller, Dan Miller, Ed Miller | - | | |
| 2848 | Millionaire Stable | Bear Borselli, Jason Gotti, Luscious LaRon, Ryu Lee | 2008- | | |
| 2849 | Mind | Adam Polak, Big Van Walter, Tommy End, Anthony Zeus/Michael Dante, Karsten Beck | 2010-2011 | | |
| 2850 | Mini Crazy MAX | Small Dandy Fujii, Mini CIMA, SUWAcito, TARUcito , TARUcito | 2002-2004 | | |
| 2851 | Mini Psycho Circus | Mini Monster Clown, Mini Murder Clown, Mini Psycho Clown | 2011-2015 | | |
| 2852 | Ministry Of Hate | Nikki Strychnine, Delirious, OuTtKaSt, MsChif, Ratboy | 2001-2003 | | |
| 2853 | Minnesota Mafia | Darin Corbin, Kody Rice, Rob James, Venom , The Prophet | 2015-2017 | | |
| 2854 | Minnesota Maulers | Minnesota Mauler I, Minnesota Mauler II, Minnesota Mauler III | 1993-1994 | | |
| 2855 | Minnesota Wrecking Crew | Gene Anderson, Lars Anderson, Ole Anderson | - | | |
| 2856 | Minnesota Wrecking Zoo | Big O. Possum, El Funky Fox, Super Thunderfrog | 2023- | | |
| 2857 | Miracle Generation | Dustin Waller, Kylon King, Jay Onyx, Shawn Knyte | 2021-2023 | | |
| 2858 | Miracle Ones | Dustin Waller, Ichiban , Kylon King | 2022- | | |
| 2859 | Miracle Ultraviolence Connection | Brodie Lee, Cheech, Cloudy | 2007-2008 | | |
| 2860 | Mirror Image Mega Kings | Joey Barone, Ricky Mandel, Peter Avalon, Nick Lovin, Tommy Wilson | 2011 | | |
| 2861 | Mirror Image Megastars | Joey Barone, Ricky Mandel, Peter Avalon, Nick Lovin, Tommy Wilson | 2011-2012 | | |
| 2862 | Miscreants | Daniel Torch, JJ King, Kalis, Lee Perfetto | 2016- | | |
| 2863 | Miserably Faithful | Gaagz The Gymp, Sal The Pal/Sal Vation, Father James Mitchell, Judais, Max The Impaler | 2022- | | |
| 2864 | Misfits | Aiden Potter, Chloe Nightshade & Matt Archer | 2023- | | |
| 2865 | Misguided Fortune | Modern Day Shaman, Matt Starr, Diesel Tracze, Jordan Silver, Hyena Hagen, Solomon Stone | 2019- | | |
| 2866 | Mission | Brother Greatness, Dan DeMan/Danos, Evie De La Rosa, Patrick Saint, Stan Michael, Sukhvinder | 2021- | | |
| 2867 | Mississippi Playaz Club | Aidan Scott, Cody Captain & The Faroh Of Phunk | 2010- | | |
| 2868 | Mobile Homers | Adam Revolver, Dewey, Ted McNaler, Tommy McNaler, Melody | 2007-2014 | | |
| 2869 | Mochizuki Dojo | Masaaki Mochizuki, Yuki Yoshioka, Kota Minoura, Keisuke Okuda, Shun Skywalker, Hyo Watanabe/Hyo | 2018-2019 | | |
| 2870 | Modern Day Kings | Ace Haven, Amy Haven, Bubba Cagle, Cody Windham | 2021- | | |
| 2871 | Moment | Otis /Motis, Mini Mo, Moses , Mojo | 2022- | | |
| 2872 | Momoiro Kyunkyun Boys | Joji Otani, Rekka, Shota Nakagawa, Hiroshi Yamato | 2022- | | |
| 2873 | Monarchy | Baron Black, Prince Apollo, AJ Gray, Leon Ruff, Ayzali | 2017-2018 | | |
| 2874 | Money Clip | Big Daddy Edwards, Big Daddy Z, Billy Holliday, Damian Kage, Dillinger/Steve Dillinger, Huang Lo, J. Prep Esquire, Paco Loco , Tracy Gilbert | 2007-2008 | | |
| 2875 | Money Stable | Bruza The Serb, The Great Ayatollah, Hudson Hulk/Hudson Kai, Takahi, Tristan Slade, Tukahe, Vinnie Vain | 2015-2017 | | |
| 2876 | Money Versus Everybody | Damon Moser, Paul Robinson, Shay Purser, Spike Trivet, Chris Ridgeway | 2018- | | |
| 2877 | Mongrels | Eddie Stone, Gavin Fitz, Russell Dempster | 2018- | | |
| 2878 | Mongrels | Barry O'Leary, Sam Yannis & Levi Nixon | 2022- | | |
| 2879 | Monkey Business Superstars | Hide Kubota, Kenichiro Arai, Buffalo, MIYAWAKI, Akira Jo, Takuya Sugawara | 2018 | | |
| 2880 | Monster Army | Yasu Urano, Yuji Hino, Antonio Honda, Masa Takanashi, Daisuke Sasaki, Hoshitango | 2012-2014 | | |
| 2881 | Monster Express | Masato Yoshino, Akira Tozawa, Syachihoko BOY, Big R Shimizu, Peter Kaasa, Shingo Takagi, Ricochet, Uhaa Nation, T-Hawk | 2013-2016 | | |
| 2882 | Monster Plant | Kengo Mashimo, KAZMA, Kaji Yamato, Daigoro Kashiwa, Hiro Tonai | 2009-2010 | | |
| 2883 | Monster Squad | Anthony Graves, Big Bear Borselli, Jon Dahmer | - | | |
| 2884 | Monster Squad | Joshua Cutshall, Billy Brash, Salem Sinner Sixx | 2017- | | |
| 2885 | Monster Squad | Mikey Wild, Joey Brittain, Casanova Valentine, Kenji Brea, Christina Von Eerie | 2017-2018 | | |
| 2886 | Monsters | Alan Kay, Ivy , Jason Jacobs, Sam Kenny | 2016- | | |
| 2887 | Monsters Island | Giant Leather, Sprinkles, Dr. Acula, Bo Jones | 2015 | | |
| 2888 | Montreal Elite | Benjamin Tull, Handsome JF/Jean Frais, Brad Alekxis, Franky The Mobster, Eric Mastrocola, Martin Girard | 2016-2020 | | |
| 2889 | Moondogs | Moondog Cujo, Moondog Spike, Moondog Spot | - | | |
| 2890 | Moondogs | Moondog Mutt, Moondog Mange, Moondog Mongrel, Moondog Runt, Moondog Kitty | 2000-2003 | | |
| 2891 | Moonshine Mafia | Brett Matthews , Eddie Osbourne, Eli Surge, Judas Icarus | 2019-2020 | | |
| 2892 | Moonshiners | Psycho , Lulu , Trinity H. Campbell | - | | |
| 2893 | More Than Hype | Darren Kearney, LJ Cleary, Nathan Martin | 2018-2021 | | |
| 2894 | Moretsu | Hiroaki Taniguchi, BarbeQ Aoki, Bomber Okuno, Ogyu Yoriaki | 2023- | | |
| 2895 | Morningstar Mercenaries | Chris Perish, Mutato, Nite | 2011-2012 | | |
| 2896 | Morty's Millionaires | Eric Draven, The Blue Beetle, Yukon Mike | - | | |
| 2897 | Movement | Johnny Ace, Johnny Smith, Mike Barton/Bart Gunn, Wolf Hawkfield | 1998-2000 | | |
| 2898 | Movement | Paul Virk, X , Ying Moua, Cordoba, Shane Black , Rylie Jackson, Bobby Brennan, Craven Knyte, Sebastian Taylor, Brandon Gore | 2019- | | |
| 2899 | Movement | Shawn Andrew Jones, Clayton, Thomas | 2018- | | |
| 2900 | Mr. Durden's Pandemonium Sideshow | Matt Durden, Samedi, Draven , Gabriel , Sinister Skunk Ape Jr. | 2017- | | |
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