Chad Austin Tracy (born May 22, 1980) is an American former professional baseball third baseman. He played in Major League Baseball (MLB) from 2004 to 2010 and again from 2012 to 2013 for the Arizona Diamondbacks, Chicago Cubs, Florida Marlins, and Washington Nationals. He also played for the Hiroshima Toyo Carp of Nippon Professional Baseball (NPB).