The Ontario Hockey Association (OHA) is the governing body for the majority of junior and senior level ice hockey teams in the province of Ontario. Founded in 1890, the OHA is sanctioned by the Ontario Hockey Federation along with the Northern Ontario Hockey Association. Other Ontario sanctioning bodies along with the OHF include the Hockey Eastern Ontario and Hockey Northwestern Ontario. The OHA controls three tiers of junior hockey; the "Tier 2 Junior "A", Junior "B", Junior "C", and one senior hockey league, Allan Cup Hockey.

The Memorial Cup is the national championship of the Canadian Hockey League, a consortium of three major junior ice hockey leagues operating in Canada and parts of the United States. It is a four-team round-robin tournament played among the champions of the Ontario Hockey League (OHL), Quebec Maritimes Junior Hockey League (QMJHL) and Western Hockey League (WHL), and a fourth, hosting team, which alternates between the three leagues annually. The Memorial Cup trophy was established by Captain James T. Sutherland to honour those who died in service during World War I. It was rededicated during the 2010 tournament to honour all soldiers who died fighting for Canada in any conflict.