Hiroyuki Nakajima (中島 裕之, Nakajima Hiroyuki, born July 31, 1982), nicknamed "Nakaji", is a Japanese professional baseball infielder for the Yomiuri Giants of Nippon Professional Baseball (NPB). He previously played for the Saitama Seibu Lions and Orix Buffaloes of Nippon Professional Baseball (NPB) and the Oakland Athletics organization. Nakajima played for the Japanese national team in the 2008 Beijing Olympics and the 2009 World Baseball Classic. After the 2011 season, the Lions posted Nakajima to Major League Baseball, but Nakajima failed to reach an agreement with the New York Yankees. After the 2012 season, he signed a two-year contract with the Athletics. After spending two years in Minor League Baseball, Nakajima returned to Japan with Buffaloes in 2015. He played for them through 2018, before joining the Giants.