Football referees
Jonas Weiberg Sture
Jonas Weickenmeier
Julian Weinberger
Jonathan Weiner
Jannik Weinkauf
Jan Peter Weßels
Joel Wessman
James Westgate
Jarno Wienefeld
Jamie Wilkie
Jonathon Wilks
Jamie Willis
Jack Willmore
James Wilson
Jette Wolf
Joe Woolmer
Jose Woshington
Junyou Wu
Jakub Wulkan
Juxhin Xhaja
Jiajin Yi
Jure Žagar
Jonathan Zamora
Jorge Zeballos
Junwei Zhang
Jiang Zhe
Jiao Zi
Julius Zill
Juste Ephrem Zio
Jailson Macêdo Freitas
Jair Antonio Maruffo
Jameel Juma Abdulhusain Mohamed
Javier Estrada Fernández
Kevin Javier Moreno Muñoz
Javier Toca Alonso
Zan Jazbec
Jens Grabski Maae
Jesús Roberto Ruíz González
Joao Batista de Arruda
João Bento
João Carlos Santos Capela
João Goma
João Filipe Malheiro Pinto
João Pedro Mota Sousa
Joelson Nazareno Ferreira Cardoso
Jonathan Barreiro
Jordan Gray
Jordan Mcritchie
Manuel Jorge Neves Moreira de Sousa
Jorge Valdés Aller