Clarence William Johnston (January 2, 1925 – April 23, 2021) was an American golf course architect and professional golfer who played on the PGA Tour. Johnston was born in Donora, Pennsylvania on January 2, 1925, but moved to Ogden, Utah when he was four years old. Johnston served in the United States Navy. He played college golf at the University of Utah and turned professional in 1950. The biggest win of his playing career was at the 1958 Texas Open Invitational. Johnston was inducted into the Utah Golf Hall of Fame in 1994 and the Arizona Golf Hall of Fame in 2018.