Marcos Rene Maidana Charlie Magri Edwin Malave Paul Malignaggi Jakob Malz Saoul Mamby Lenny Mancini Ray Mancini Peter Manfredo Rocky Marciano Antonio Margarito Juan Manuel Márquez Rafael Márquez Sergio Martínez Lloyd Marshall Bob Martin Vanes Martirosyan Oleg Maskaev Henry Maske Carlos Maussa Joey Maxim Andrew Maynard Ricardo Mayorga Floyd Mayweather Jr. Floyd Mayweather Sr. Jeff Mayweather Roger Mayweather Alessandro Mazzinghi Samuel Mbugua Jock McAvoy Kevin McBride Paul McCloskey Gerald McClellan Wayne McCullough Glenn McCrory John McDermott Thomas McDonagh Terry McGovern Barry McGuigan Victor McLaglen Jimmy McLarnin Lenny McLean Peter McNeeley Mike McTigue Sam McVea Kali Meehan Carlos Melo Boyd Melson Daniel Mendoza Jean-Paul Mendy Alberto Mercado Ray Mercer Gus Mercurio Joe Mesi Dariusz Michalczewski Tadashi Mihara Karel Miljon Freddie Mills Edison Miranda Brian Mitchell Byron Mitchell Kevin Mitchell Sharmba Mitchell Seth Mitchell Javier Molina John John Molina Mahyar Monshipour Pedro Montañez Bob Montgomery Carlos Monzón Archie Moore Lauren Moore Michael Moorer Sergio Mora Érik Morales Carroll Morgan Steve Molitor Jean-Marc Mormeck Tommy Morrison Shane Mosley Anthony Mundine Tony Mundine John Mugabi Takuya Muguruma Bob Murphy John Murray N Lovemore N'dou Shigeo Nakajima José Nápoles Omar Andrés Narváez Charlie Nash Nobuo Nashiro Rolando Navarrete Orzubek Nazarov Azumah Nelson Johnny Nelson Yutaka Niida Yosuke Nishijima Orlin Norris Terry Norris Ken Norton Yoshiaki Numata Michael Nunn O David Obregon Victor Oganov Sean O'Grady Sam Olij Rubén Olivares Bobo Olson George Olteanu Ajose Olusegun László Orbán Carlos Ortiz Manuel Ortiz Victor Ortíz Masao Ohba Hideyuki Ohashi Katsuya Onizuka Sven Ottke Said Ouali Kassim Ouma P Irene Pacheco Bobby Pacquiao Manny Pacquiao Greg Page Gerry Peñalosa Freddie Pendleton Paul Pender Rubén Darío Palacios Carlos Palomino Antonio Paoli László Papp Giovanni Parisi Kubrat Pulev Mate Parlov Lorenzo Parra Jean Pascal Mauricio Pastrana Toon Pastor Willie Pastrano Floyd Patterson Jimmy Paul Kelly Pavlik Vinny Pazienza Eusebio Pedroza Willie Pep James Pereira Luis Alberto Pérez Pascual Perez Eddie Perkins Samuel Peter Kostas Petrou Lyn Philp Francesco Pianeta Ellyas Pical Antonio Pitalúa Lupe Pintor Nicky Piper Pete Podgorski Alexander Povetkin Breidis Prescott Mario Preskar Ruslan Provodnikov Aaron Pryor Q Dwight Muhammad Qawi Bobby Quarry Jerry Quarry Mike Quarry Hennie Quentemeijer Carlos Quintana Robert Quiroga R Pete Rademacher Zahir Raheem Hasim Rahman Victor Emilio Ramirez Sugar Ramos Sam Rapira Pete Ranzany Tony Reed Robin Reid Gil Reyes Ryan Rhodes Dick Richardson Viddal Riley Nick Ring Cosme Rivera Freddie Roach Paolo Roberto Sugar Ray Robinson Graciano Rocchigiani Ralf Rocchigiani Adilson Rodrigues