(UFC) Jason MacDonald - (KOTC, MFC, UFC) Rob MacDonald - (UFC, MFC) Rory MacDonald - (UFC, KOTC, Bellator) Gustavo Machado - (Shooto, IFL, Pancrase, KOTC, DEEP, RINGS) Murad Machaev - (Bellator) Lyoto Machida - (NJPW, Jungle Fight, K-1, K-1 Hero's, WFA, UFC, Bellator) War Machine - (UFC, BAMMA, XFC, Bellator, TPF) Anthony Macias - (PRIDE, UFC) Reza Madadi - (UFC) Jon Madsen - (UFC) Akira Maeda - (RINGS) Yoshiro Maeda - (Pancrase, PRIDE, WEC, DREAM, DEEP, Sengoku) Leonardo Mafra - (UFC) Caio Magalhães - (UFC, Shooto) Vinicius Magalhães - (Strikeforce) Vinny Magalhães - (M-1, UFC, Titan FC) Neil Magny - (UFC) Rashid Magomedov - (M-1, UFC) Ruslan Magomedov - (Bellator, UFC) Zabit Magomedsharipov - (UFC) John Maguire - (BAMMA, Cage Rage, UFC, CWFC, KSW) Demian Maia - (UFC) Eduardo Maiorino - (K-1) John Makdessi - (UFC) Islam Makhachev - (UFC, M-1) Zach Makovsky - (Bellator, ShoXC, UFC, ACB) Nazareno Malegarie - (Bellator, Jungle Fight) Fábio Maldonado - (UFC) Nick Mamalis - (Bellator) Melvin Manhoef - (Cage Rage, K-1 Hero's, Strikeforce, DREAM, OneFC, KSW, Bellator) Ronnie Mann - (Bellator, Cage Rage, Sengoku, CWFC) Andre Mannaart - (Shooto, RINGS) Jimi Manuwa - (BAMMA, UFC) Cristiano Marcello - (UFC, PRIDE) Ronny Markes - (Shooto, UFC, WSOF) Rory Markham - (IFL, Adrenaline MMA, UFC) Nate Marquardt - (Pancrase, Strikeforce, UFC) Carmelo Marrero - (WEC, UFC, Bellator, XFC, IFL) Doug Marshall - (Bellator, SFL, WEC, PFC, TPF) Eliot Marshall - (UFC) Jack Marshman - (BAMMA, CWFC, UFC) Terry Martin - (Strikeforce, WEC, KOTC, Affliction, UFC, Adrenaline MMA, MFC, KSW) Tony Martin - (UFC) Alonzo Martinez - (Bellator, Adrenaline MMA, Titan FC, Strikeforce) Danny Martinez - (XFC, WEC, TPF, UFC) Henry Martinez - (Bellator, UFC) Jesus Martinez - (Bellator) Poppies Martinez - (Bellator, WEC, PFC, TPF) Rad Martinez - (Bellator, KOTC) Ryan Martinez - (Bellator) Will Martinez - (Bellator) Adriano Martins - (Jungle Fight, Strikeforce, UFC) Lucas Martins - (Jungle Fight, UFC) Wágner "Zuluzinho" da Conceição Martins - (K-1 Hero's, CWFC, PRIDE) Bristol Marunde - (UFC, Strikeforce, M-1, IFL, Titan FC) Mike Massenzio - (UFC, IFL) Jameel Massouh - (Bellator, KOTC, Pancrase, WEC, Adrenaline MMA) Jorge Masvidal - (Bellator, Sengoku, Strikeforce, UFC) Daijiro Matsui - (KOTC, Cage Rage, PRIDE, Pancrase, DEEP, AOW) Ryota Matsune - (Shooto) Hiroaki Matsutani - (Shooto) A.J. Matthews - (Bellator, Strikeforce) Jake Matthews - (UFC) Vladimir Matyushenko - (VTJ, Jungle Fight, Affliction, IFL, UFC, Bellator) Gray Maynard - (UFC) Ricardo Mayorga -