The 2009 Memorial Cup was a four-team round-robin format ice hockey tournament played during May 2009 in Rimouski, Quebec. It was the 91st annual Memorial Cup competition and determined the major junior ice hockey champion of the Canadian Hockey League (CHL). The Quebec Major Junior Hockey League announced on April 3, 2008, that the Rimouski Océanic were chosen to host the event at the Colisée de Rimouski. Other participants include the Windsor Spitfires, champions of the Ontario Hockey League, the Drummondville Voltigeurs, champions of the Quebec Major Junior Hockey League, and the Kelowna Rockets, champions of the Western Hockey League.

The Ontario Hockey League is one of the three major junior ice hockey leagues which constitute the Canadian Hockey League. The league is for players aged 16–20. There are currently 20 teams in the OHL: seventeen in Ontario, two in Michigan, and one in Pennsylvania.