Seong Seung-min (; born 13 May 2003) is a South Korean modern pentathlete. She became the individual world champion in 2024 and won a bronze medal at the 2024 Summer Olympics in Paris.

Career She won gold in the individual event and silver in the team event at the 2024 World Modern Pentathlon Championships. In doing so, she became the first South Korean woman to win a world title in the event.

She competed at the 2024 Summer Olympics in Paris in August 2024, winning the bronze medal in the individual event, becoming the first Asian female pentathlete to win an Olympic medal.

In August 2026, she won the gold medal in the mixed relay alongside Seo Chang-wan at the 2026 World Modern Pentathlon Championships. In September, she won the gold medal in the modern pentathlon at the 2026 Asian Games in Japan, leading the event from the opening discipline onwards. In doing so, she became the first South Korean female pentathlete to win the individual event. Alongside Kim Un-ju and Shin Su-min, she also led South Korea to the silver medal in the team event.

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