The 2015–16 Colgate Raiders men's basketball team represented Colgate University during the 2015–16 NCAA Division I men's basketball season.

The Raiders, led by fifth year head coach Matt Langel, played their home games at Cotterell Court and were members of the Patriot League.

They finished the season 13–17, 9–9 in Patriot League play to finish in four way tie for fourth place.

They lost in the quarterfinals of the Patriot League tournament to Army.

They defeated Navy to advance to the semifinals of the Patriot League tournament where they lost to American.