The 2015 Big Ten men's basketball tournament was held from March 11 through March 15 at United Center in Chicago, Illinois. This was the eighteenth annual Big Ten tournament and was the first tournament to feature 14 teams of the expanded Big Ten to include Maryland and Rutgers. The championship was won by Wisconsin who defeated Michigan State in the championship game. As a result, Wisconsin received the Big Ten's automatic bid to the NCAA tournament. The win marked Wisconsin's third tournament championship and first since 2008.