2009 Big Ten men's basketball tournament

It was the twelfth annual Big Ten men's basketball tournament.

As a result, Purdue received the Big Ten's automatic bid to the NCAA tournament.

The win marked Purdue's first tournament championship in only their second appearance.

Teams were seeded by conference record, with a tiebreaker system used to seed teams with identical conference records.

Seeding for the tournament was determined at the close of the regular conference season.