The 2015 Atlantic 10 men's basketball tournament was held March 11–15, 2015 at the Barclays Center in Brooklyn, New York.
With Davidson joining the conference in July 2014, it was a 14-team tournament for the first time.
Teams were seeded by the 2014–15 Atlantic 10 Conference season record.
The top 10 teams received a first round bye and the top four teams received a double bye.
Teams were seeded by record within the conference, with a tiebreaker system to seed teams with identical conference records.