Tsuyoshi Nishioka, Japanese baseball player
Tsuyoshi Nishioka (西岡 剛, Nishioka Tsuyoshi, born July 27, 1984) is a Japanese former professional baseball infielder. He played in Nippon Professional Baseball (NPB) for the Chiba Lotte Marines and Hanshin Tigers, as well as Major League Baseball (MLB) for the Minnesota Twins.

Nishioka played in the 2006 World Baseball Classic as well as the 2008 Beijing Olympics as a member of the Japanese national team. In 2010, he became the fifth person to record 200 hits in a single NPB season.