Ralph H. Miller (March 9, 1919 – May 15, 2001) was an American college basketball coach, a head coach for 38 years at three universities: Wichita (1951–1964), Iowa, (1964–1970), and Oregon State (1970–1989). With an overall record of 657–382 (.632), his teams had losing records only three times. Prior to his final season, he was enshrined in the Basketball Hall of Fame on May 3, 1988.