The 2015–16 Southern Utah Thunderbirds basketball team represented Southern Utah University during the 2015–16 NCAA Division I men's basketball season.

The Thunderbirds were led by fourth-year head coach Nick Robinson and played their home games at the Centrum Arena in Cedar City, Utah.

They lost in the first round of the Big Sky tournament to North Dakota.

On March 9, 2016, head coach Nick Robinson was fired.

On March 22, the school hired Todd Simon as head coach.