The 2011–12 QMJHL season was the 43rd season of the Quebec Major Junior Hockey League (QMJHL). The regular season, which consisted of 17 teams playing 68 games each, began in September 2011 and ended in March 2012. This season was Blainville-Boisbriand Armada's first season in the league, as the team relocated to Boisbriand from Verdun where they played as the Montreal Junior Hockey Club from 2008 to 2011. The league lost one of his charter teams when the Lewiston Maineiacs folded during after the previous season, the QMJHL later announce an expansion team to Sherbrooke for the 2012–13 season. In the playoffs, the Saint John Sea Dogs became the seventh team in league history to capture consecutive President's Cup championships.