Football referees
Miguel Ángel Reynoso Arce
Marco Ribbink
Marco Ricci
Maxence Richard
Maximilian Riedel
Marcel Riemer
Mathías Riquelme
Melvin Rivas
Michael Robertson-Tant
Manuel António Rodrigues Oliveira
Marco Rodríguez
Marcel Roeleveld
Miguel Stiven Roldán Pérez
Magnus Römö-Mella
Mike Roncone
Miguel Rosales Yeneres
Martin Ross
Mathias Roth
Matti Roth
Markus Rotvold Hammarstrøm
Marián Ruc
Marcello Rudá Neves Ramos da Costa
Maksim Rudenko
Majed Rushrush
Matthew Russell
Mark Russell
Márton Rúsz
Michael Ryan
Mark Ryder
M. Saanya
Mohammad Sabahi
Mateo Sadikaj
Mamuka Sadiliani
Mohamed Saïdi
Mohamed Salama
Mohammed Salm
Miikka Salminen
Mircea Marcel Salomir Jr.
Mario Salvo
Mirsat Sancaktar
Miguel Santiváñez
Muringothumalil Bhaskaran Santosh Kumar
M. Sarıdağ
Miloš Savović
Marco Scatragli
Mileta Šćepanović
Markus Schelb
Marco Schlacher
Markus Schmidt
Maurice Schmidt