J. Ross Robertson Cup

J. Ross Robertson Cup
Sterling silver bowl atop of a wooden plinth
SportIce hockey
LeagueOntario Hockey League
Awarded forPlayoffs champion
CountryCanada
History
First award1910–11
First winnerKingston Frontenacs
Most winsOshawa Generals (13)
Most recentLondon Knights (5)

The J. Ross Robertson Cup is a Canadian ice hockey trophy. It is awarded annually in junior ice hockey to the champion of the Ontario Hockey League playoffs. It was donated by John Ross Robertson to the Ontario Hockey Association in 1910, and is the third of three similarly named trophies he established. His other eponymous trophies for the OHA include, the J. Ross Robertson Cup awarded to the annual champions of Allan Cup Hockey, and the J. Ross Robertson Cup which was awarded to the annual champions of the discontinued intermediate division.

The J. Ross Robertson Cup has continuously been awarded as the playoffs championship trophy for the top tier of junior hockey in Ontario. The cup transitioned from the Ontario Hockey Association to the Ontario Major Junior Hockey League in 1974, and has been the championship trophy of the Ontario Hockey League since 1980. The winner of the J. Ross Robertson Cup has been eligible to compete for the Memorial Cup as the junior hockey champion of Canada since 1919.