An Seong Jung

An Seong Jung is a South Korea sprinter, born on June 23, 2003. He competes primarily in the 200m, 400m and 400mH.

His personal bests include 22.63 in the 200m, 48.14 in the 400m, 50.77 in the 400mH, 3:14.28 in the 4x400m and 55.14 in the 400mhurdle. He is currently active on the international athletics circuit, representing South Korea.