The 2017 Big Ten men's basketball tournament was the postseason men's basketball tournament for the Big Ten Conference held from March 8 through March 12, 2017 at the Verizon Center in Washington, D.C. It was the first Big Ten men's basketball tournament held outside the conference's traditional heartland in the Midwest. The championship was won by Michigan, which defeated Wisconsin in the championship game. As a result, Michigan received the conference's automatic bid to the NCAA Tournament. The championship was Michigan's first (after having their win of the inaugural tournament vacated) and they became the lowest-seeded team ever to win the Big Ten tournament.
All 14 Big Ten schools participated in the tournament. Teams were seeded by conference record, with a tiebreaker system used to seed teams with identical conference records. The top 10 teams received a first round bye and the top four teams received a double bye. Tiebreaking procedures remained unchanged from the 2016 tournament.
<nowiki>* denotes overtime period</nowiki>