A referee is an official, in a variety of sports and competition, responsible for enforcing the rules of the sport, including sportsmanship decisions such as ejection. The official tasked with this job may be known by a variety of other titles depending on the sport, including umpire, judge, arbiter, commissaire, or technical official (by the International Olympic Committee). Referees may be assisted by linesmen, timekeepers, touch judges, or video assistant referees (VAR).
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Basketball Referee during WNBA game.jpg
Basketball Referee watches players closely during the WNBA finals
Bundesarchiv Bild 183-1982-1013-501, Boxkampf Hucks gegen Gahrmeister.jpg
For documentary purposes the German Federal Archive often retained the original image captions, whi...
Croke Park referees.jpg
Croke Park referees
Matt Reis Carlos Ruiz yellow card.jpg
Carlos Ruiz receives a yellow card, Matt Reis also pictured.
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Five shimpan deliberating on a sumo bout's result, Haru-basho 2006十両取組*物言い
Pittsburgh Penguins, Washington Capitals, Bryan Rust (33744033514).jpg
Bryan Rust of the Pittsburgh Penguins scores a goal against the Washington Capitals in Game Seven of...
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Referee (GAA)
Referee announces call at UCLA at Cal 10-25-08.JPG
The referee (right, in white cap) announces a call during a game between the California Golden Bears...
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Ice hockey - American Hockey League referee Dean Morton
Ronaldo yellow card.jpg
Cristiano Ronaldo is shown the yellow card
Rugby league sin bin.jpg
Unknown Campbelltown player is sin binned against Sydney Bulls. The referee signals with his hands u...
Stage brief at the 2017 IPSC Rifle World Shoot.jpg
A squad of shooters get their stage brief on stage 11 of the 2017 IPSC Rifle World Shoot in Kubinka,...
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A gyōji, the 33rd Kimura Shonosuke, taking part in the yokozuna ring-entering ceremony.