<P> 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 2017--18 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 . </P> <P> 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 . </P>

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