The 2015–16 St. Bonaventure Bonnies men's basketball team represented St. Bonaventure University during the 2015–16 NCAA Division I men's basketball season.

The Bonnies, led by ninth year head coach Mark Schmidt, played their home games at the Reilly Center and were members of the Atlantic 10 Conference.

While the two other teams who tied with Saint Bonaventure for the A-10 title received at-large bids to the NCAA tournament, the Bonnies were one of the "First Four Out" and instead received a top seed in the National Invitation Tournament where they lost in the first round to Wagner.

They advanced to the quarterfinals of the A-10 tournament where they lost to Dayton.

For the second consecutive year, the Bonnies accumulated a winning record but did not receive an invite the postseason; the team failed to receive a bid to the National Invitation Tournament and, in accordance with school policy, preemptively ruled out participating in either the College Basketball Invitational or CollegeInsider.com Postseason Tournament.