Sung Jung-A (born 25 December 1965 in Jinju, Gyeongsangnam-do) is a South Korean former basketball player who won the silver medal in the women's basketball tournament at the 1984 Summer Olympics. Sung was also a member of the South Korean junior national basketball team that won the silver medal at the inaugural FIBA Under-19 World Championship for Women in 1985. Sung also competed in 1988 Summer Olympics where South Korea finished 7th with a record of 2–3.