Date of Birth: 
Place of Birth: Tanabe, Wakayama Prefecture, Japan
About Osamu Hamanaka
- Osamu Hamanaka (?? ?, born July 9, 1978 in Tanabe, Wakayama) is a former Japanese professional baseball player.
- Drafted by the Hanshin Tigers in Japan's Nippon Professional Baseball in 1996, Hamanaka spent 11 years with the club from 1997 to 2007.
- Following his time with Hanshin, Hamanaka spent three seasons with the Orix Buffaloes from 2008 to 2010 and one season with the Tokyo Yakult Swallows in 2011.
- In November 2014 it was announced that Hamanaka had signed a contract to return to Hanshin as a batting coach for the farm team.
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