Walter Ray Allen Jr. (born July 20, 1975) is an American former professional basketball player. He played 18 seasons in the National Basketball Association (NBA) and was inducted into the Naismith Memorial Basketball Hall of Fame as a player in 2018.

Allen played college basketball for the Connecticut Huskies for three seasons, gaining a reputation as an efficient long-range shooter. He entered the NBA in 1996 as the fifth overall selection. In the NBA, he developed into a prolific scorer for the Milwaukee Bucks, featuring alongside Glenn Robinson and Sam Cassell as the team achieved playoff success. However, the trio were unable to capture a championship, and Allen was traded to the Seattle SuperSonics. In Seattle, Allen's reputation as a scorer was solidified; he would break several league records for three-point and free throw shooting. Despite this, a title still eluded Allen, and he was traded to the Boston Celtics in 2007.