Won Sun-jin (born July 4, 1974) is a South Korean taekwondo practitioner.

She won a gold medal in flyweight at the 1989 World Taekwondo Championships in Seoul.

She won a bronze medal in bantamweight at the 1993 World Taekwondo Championships in New York City, and a gold medal in bantamweight at the 1995 World Taekwondo Championships in Manila.

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