Football referees
Sebastián Nicolás Martínez
Saíd Martínez
Sian Massey
Sebastián Mastrángelo
Simon Mather
Stanislav Matveev
Stephen McDade
Shane McGonigle
Steven McLean
Semen Medvedev
Selina Menzel
Sefa Can Meral
Steve Meredith
Stephen Merriman
Satu Miettunen
Shoichiro Mikami
Scott Millar
Svein Oddvar Moen
Sultan Mohamed
Shayan Mollaei
Sherwin Moore
Sébastien Moreira
Stuart Morland
Santiago Motta
Sebastian Mucha
Salima Mukansanga
Sirko Müke
Siemen Mulder
Sam Mulhall
Sayed Munir
Shinji Murakami
S. Murdoch
Sergiu Claudiu Muresan
Shamirah Nabadda
S. Nabil
Sergey Nabokin
Shavkat Nasibullayev
Senthil Nathan
Siyabonga Nkomo
Sandro Nonikashvili
Sebastian Noshinravani
Sergey Nozhenko
Srđan Obradović
Santeri Ojala
Scott Oldham
Sophie Fabienne Olivie
Serkan Önsal
Sergey Osipov
Stanko Ostraćanin
Sinan Özcan