Atsushi Koga

, sometimes translated erroneously as "Jun Koga", (born Kanagawa Prefecture, 25 February 1975) is a Japanese former rugby union player who played as Centre.
Career.
After his graduation from Yamanashi Gakuin University, for whose rugby club he played, Koga joined Sanyo Wild Knights, where he played throughout all of his career until his retirement in 2005. He was also part of the 1999 Rugby World Cup squad, but he never had a cap for Japan.