Alexander Murray Hannum was a professional basketball player and coach. Hannum coached two National Basketball Association (NBA) teams and one American Basketball Association (ABA) team to league championships. He had a combined NBA-ABA record of 649–564 (.535) in the regular season and 61–46 (.570) in the playoffs over 16 seasons. In 1998, he was inducted into the Naismith Memorial Basketball Hall of Fame as a coach.

The American Basketball Association (ABA) was a men's professional basketball league from 1967 to 1976. The ABA merged into the National Basketball Association (NBA) in 1976, resulting in four ABA teams joining the NBA and the introduction of the NBA 3-point shot in 1979.