Robert Clifford Ellis (born December 5, 1945) is an American college basketball coach, currently the head coach at Coastal Carolina University. Going into the 2020–21 season, Coach Ellis's 800 NCAA Division I victories rank him 8th on the list of all-time career coaching victories in NCAA Division I basketball. Ellis is a member of three Halls of Fame after entering Clemson's in 2013. He was already part of the Mobile Sports and Cumberland University Halls of Fame.