This is a list of the tallest players in National Basketball Association history. Twenty five of them have been listed at 7 feet, 3 inches or taller. Two are active as of the 2016–17 season; Kristaps Porziņģis of the New York Knicks and Boban Marjanović of the Detroit Pistons. The tallest player inducted into the Naismith Memorial Basketball Hall of Fame is 7 feet, 6 inch Yao Ming. In addition to Yao, Ralph Sampson and Arvydas Sabonis were the only other players 7'3" or taller selected to the Hall of Fame.
In the seventh round of the 1981 NBA Draft, the Golden State Warriors used the 171st pick to select Yasutaka Okayama, a Japanese basketball player who was measured at 7 feet 8 inches (2.34 m) and 330 pounds (150 kg). Okayama, who attended and played junior varsity basketball at the University of Portland for one and a half years in 1976 as an exchange student, declined to try out for the Warriors and never played in the NBA. He is the tallest person ever drafted and would have been the tallest player in the NBA had he played in the league.