The 2015–16 Florida State Seminoles men's basketball team, variously Florida State or FSU, represented Florida State University during the 2015–16 NCAA Division I men's basketball season. The Seminoles were led by fourteenth year head coach Leonard Hamilton and played their home games at the Donald L. Tucker Center on the university's Tallahassee, Florida campus. They were members of the Atlantic Coast Conference.

James Leonard Hamilton is an American basketball coach and the current men's basketball head coach at Florida State University. He is a former head coach at Oklahoma State University, the University of Miami, and for the National Basketball Association's Washington Wizards. In his 33 years as a collegiate head coach, his teams have qualified for 12 NCAA Division I men's basketball tournaments and 11 National Invitation Tournaments, highlighted by appearances in the NCAA Tournament's Elite Eight (2018) and Sweet 16 with Florida State, as well as a Sweet 16 appearance with Miami (2000). Other career benchmarks include the Big East Conference regular season championship in 2000, the ACC tournament title in 2012 and the ACC regular season championship in 2020. While with the Wizards in 2000–01, they posted a 19–63 record.