The 2011–12 GMHL season was the sixth season of the Greater Metro Junior A Hockey League (GMHL). The fourteen teams of the GMHL played 42-game schedules. Starting in February 2012, the top teams of the league played down for the Russell Cup, emblematic of the grand championship of the GMHL. Since the GMHL is independent from Hockey Canada and the Canadian Junior Hockey League, this is where the GMHL's season ended. The league champion was the Sturgeon Falls Lumberjacks as they defeated the Temiscaming Titans 4-games-to-2.