Kory C. Casto (born December 8, 1981) is an American former Major League Baseball player. Casto began his career with the Washington Nationals. He made his Major League debut April 3,, in a game against the Florida Marlins. On January 14, 2010, Casto signed a minor league contract with an invite to spring training with the Detroit Tigers. Casto was released by Detroit following spring training. In May 2010, Casto was signed by the Arizona Diamondbacks to a minor league contract. On July 31, 2010, Casto voluntarily retired. Casto went to high school at North Marion High School in Aurora, OR.