An Se-hyeon

An Se-hyeon (born October 14, 1995) is a South Korean swimmer.

She competed at the 2015 World Aquatics Championships, 2016 Summer Olympics in Rio de Janeiro and 2020 Summer Olympics in Tokyo.

Career
In July 2021, she represented South Korea at the 2020 Summer Olympics held in Tokyo, Japan. She competed in the women's 100 metre butterfly and 4 × 200 metre freestyle relay events. In freestyle event, she did not advance to compete in the semifinal. In the freestyle relay event, the team did not advance to compete in the final.