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 Rimouski Océanic are a Canadian junior ice hockey team in the Quebec Maritimes Junior Hockey League (QMJHL). The franchise was granted for the 1969–70 season as the Sherbrooke Castors. The Castors played in Sherbrooke from 1969 to 1982 before moving to Saint-Jean-sur-Richelieu, Quebec, in 1982 to become the Saint-Jean Castors. In 1989, the team was renamed the Saint-Jean Lynx. In 1995, the team then moved to Rimouski, Quebec, to become the Rimouski Océanic.