The 2012–13 Big Ten men's basketball season began with practices in October 2012, followed by the start of the 2012–13 NCAA Division I men's basketball season in November. Conference play began in early-January 2013, and concluded in March with the 2013 Big Ten men's basketball tournament at the United Center in Chicago. All conference regular season and tournament games were broadcast nationally. For the 37th consecutive season, the conference led the nation in attendance.