Football referees
Riccardo Ros
Rafal Rostkowski
Ron Rubin
Rubén Ruipérez Marín
Rövşən Rəcəbov
Remzi Sadiku
Roman Safjan
Roman Safyan
Rohit Saggi
Ricardo Salazar
Raphael Salzberger
Rafael Sánchez López
Roberto Paul Sánchez Rodríguez
Rafael Santos
Ryuji Sato
Robert Schörgenhofer
Robert Schröder
Robin Segura
Rafael Shafeev
Raktim Shah
Ryan Shanklin
Robert Sibiga
Revo Sirel
R. Šmitas
Roman Smolinski
Randy Solano
Reyes Soto Aular
Rob Souwen
Rick Sturm
Raquel Suárez González
Rafael Subirana
Ruslan Sultangaliev
Richard Sundell
Rachel Swett
Rafał Szydełko
Reo Tanaka
Ryo Tanimoto
Roomer Tarajev
Richard Tejada
Roberto Tejero García
Ranjita Devi Tekcham
Russell Macario Teran Leon
Robert Thomson
Ramiro Ticona Condori
Roxana Timiș
Roberto Tobar Vargas
Richard Toom
Ray Luis Torres Arroyo
Rafael Torres Orozco
Rodolpho Toski Marques