Ralph H. Miller (March 9, 1919 – May 15, 2001) was an American basketball coach. A native of Chanute, Kansas, Miller coached at the University of Wichita (1951–1964), the University of Iowa (1964–1970) and Oregon State University (1970–1989), compiling a 657-382 (.632) overall record in 38 seasons combined. He was enshrined to the Naismith Memorial Basketball Hall of Fame as a coach on May 3, 1988. His teams had losing records only three times.