Known For: Acting
Gender: Male
Date of Birth: October 15, 1978 (46 years old)
Place of Birth: Kawaguchi, Saitama, Japan
Koji Seki (関 幸治, Seki Kōji, October 15, 1978) is a Japanese actor from Saitama Prefecture. He is affiliated with Animo Produce. He has blood type O.