Robert Michael Kielty (last name pronounced KELT-ee) (born August 5, 1976) is an American former professional baseball outfielder. He played for the Minnesota Twins, Toronto Blue Jays, Oakland Athletics, and Boston Red Sox during a Major League Baseball (MLB) career that lasted from 2001 to 2007. In his final MLB season, Kielty won the 2007 World Series over the Colorado Rockies as a member of the Red Sox.