Zelmo "Big Z" Beaty was an American basketball player. He played eight seasons in the National Basketball Association (NBA) and four in the rival American Basketball Association (ABA). A three-time ABA All-Star and two-time NBA All-Star, Beaty was inducted into the Naismith Memorial Basketball Hall of Fame as a player in 2016.

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.