Jon Francis Koncak (born May 17, 1963) is a former American professional basketball player. A 7'0" center from Southern Methodist University, Koncak was selected with the 5th pick in the 1985 NBA Draft by the Atlanta Hawks. Koncak spent ten seasons with the Hawks (1985–1995), mainly in a reserve role, then concluded his career with the Orlando Magic. He retired in 1996 with career totals of 3,520 points and 3,856 rebounds.