Ha Seung-Jin (born August 4, 1985) is a South Korean professional basketball player who has played in the NBA and the NBA D-League. He was a second round draft pick (46th overall) of the Portland Trail Blazers in the 2004 NBA Draft. At 7 ft 3 in, 305 lb, he was among the largest players in the NBA. He is also the first South Korean to play in the NBA.
Before playing in the NBA, Ha played for Yonsei University and Samil Commercial School in South Korea. Ha arrived in Los Angeles, California in 2004 to prepare himself for the 2004 NBA Draft. Ha played seven tournament games with the Yonsei basketball team in his high school senior year and averaged 12.6 points, 8.6 rebounds and 1.6 blocks; Yonsei won the national title. He played briefly with the Portland Reign of the ABA. Ha joined the Blazers in the middle of the 2004-05 season. Ha rarely played in games; however, on April 20 against the Los Angeles Lakers, he scored a career high 13 points. During the 2005-06 season Ha was assigned to the NBA D-League's Fort Worth Flyers on March 28, 2006, where he played for five games but did not make an impact. When fellow Blazer centers Theo Ratliff and Joel Przybilla were unable to play due to injury, Ha started four games, averaging 11 minutes playing time.
Ha's older sister, Ha Eun-Joo, is also a professional basketball player. A 6'8" center, she signed with Los Angeles Sparks of the WNBA on February 6, 2006, and was later waived on May 19, for failing to arrive in Los Angeles due to a conflicting contract with Chanson Cosmetics of the Japanese league.