Koichi Oshima
Coach / Infielder
Born: (1967-06-17) June 17, 1967 (age 57) Itabashi, Tokyo, Japan
Batted: Switch Threw: Right
NPB debut
April 18, 1993, for the Kintetsu Buffaloes
Last NPB appearance
September 28, 2005, for the Tohoku Rakuten Golden Eagles
NPB statistics
Batting average	.261
Hits	1088
Runs batted in	334
Stolen Bases	71
Home runs	24
Teams
As player Kintetsu Buffaloes (1993 – 1995) Orix BlueWave (1996 – 2004) Tohoku Rakuten Golden Eagles (2005) As coach Orix Buffaloes (2006–2015)
Career highlights and awards
2× NPB Best Nine Award (1996, 2000) 3× NPB Golden Glove Award (1996, 1997, 2000) NPB All-Star (2000)
Medals Representing  Japan Men's Baseball Summer Olympics Barcelona 1992 Team Intercontinental Cup Barcelona 1991 Team

Koichi Oshima (大島 公一, Oshima Koichi, born June 17, 1967) is a retired Japanese professional baseball player from Itabashi, Tokyo, Japan. He played for the Kintetsu Buffaloes, Orix Buffaloes, 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.

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