The Minto Cup Trophy is located in the Canadian Lacrosse Hall of Fame. It is awarded annually to the champion junior men's lacrosse team of Canada. It was donated in 1901 by the Governor-General, Lord Minto, but until 1934 was awarded to the senior men's champion of Canada. During that period the Mann Cup, the trophy currently awarded to the senior champion, was also awarded to a national men's champion in a separate competition. The Minto Cup senior competition was dominated by the New Westminster Salmonbellies, who held the trophy for 21 of the 29 years in which it was contested (the competition was suspended during World War I).

In 1934 the last trustee appointed to supervise the Cup died, and the Lord Minto of the day eventually transferred it to the Canadian Lacrosse Association, which decided to award it as the trophy for the national junior men's champion, starting in 1937. Originally, the competition was between all-star provincial teams formed by adding players to the provincial champion. In 1960 this practice was abandoned and the trophy has since been competed for by the Junior A provincial champions of British Columbia of the BCLA,Ontario of the OLA and recently Alberta, of the ALA the only provinces where organized lacrosse thrives.