Date of Birth: 
About Seong Nak-gun
- Seong Nak-gun (born 26 February 1962) is a South Korean sprinter.
- He competed in the men's 4 × 100 metres relay at the 1988 Summer Olympics.Seong attended Busan Sports High School (????????) and was active in track and field there.
- He went on to Dong-a University, and while a student there represented South Korea at the 1980 Juniors Track World Championships and the 1983 Asian Athletics Championships.
- Along with Jang Jae-keun, Kim Jong-il, and Sim Deok-seop, he was part of the team which won bronze in the men's 4 × 100 metres relay at the 1986 Asian Games.His brother Seong Nak-gap was also a competitive sprinter in the 1990s.
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