The 2015–16 Iona Gaels men's basketball team represented Iona College during the 2015–16 NCAA Division I men's basketball season.

The Gaels, led by sixth year head coach Tim Cluess, played their home games at the Hynes Athletic Center and were members of the Metro Atlantic Athletic Conference (MAAC).

They defeated Canisius, Siena, and Monmouth to be champions of the MAAC tournament and earn the conference's automatic bid to the NCAA tournament where, as a #13 seed, they lost in the first round to Iowa State.

Iona lost to Manhattan in the championship game of the MAAC tournament and earned an automatic bid to the National Invitation Tournament.

In the NIT, they lost in the first round to Rhode Island.