This biography of a living person does not cite any references or sources. Please help by adding reliable sources. Contentious material about living people that is unsourced or poorly sourced must be removed immediately. (January 2009) Find sources: (Koichi Oshima – news, books, scholar)

Koichi Oshima (大島 公一, Oshima Koichi^?, born June 17, 1967) is a former professional baseball player from Itabashi, Tokyo, Japan. He played for the Osaka Kintetsu Buffaloes, Orix BlueWave, and Tohoku Rakuten Golden Eagles during his professional career, and currently works as a minor league hitting coach for the Orix Buffaloes.

Oshima was a valuable switch hitter and a solid fielder, winning three Japanese golden glove awards at second base, and two Best Nine awards. He dismissed an offer to work as a coach when the Osaka Kintetsu Buffaloes and Orix BlueWave merged, and played a season with the Tohoku Rakuten Golden Eagles before becoming a coach for the Orix Buffaloes in 2006.

He won a bronze medal in the 1992 Summer Olympics before entering the Japanese professional leagues.

This article about a Japanese Olympic medalist is a stub. You can help Wikipedia by expanding it. v • d • e

This biographical article relating to a Japanese baseball infielder is a stub. You can help Wikipedia by expanding it. v • d • e