Sung Jung-A (born 25 December 1965) 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.

Her son, Lee Hyun-jung is a South Korean college basketball player for the Davidson Wildcats of the Atlantic 10 Conference.

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