Leonard Steven Grasz (born November 1, 1961) is an American attorney and jurist serving as a United States circuit judge of the United States Court of Appeals for the Eighth Circuit. A graduate of the University of Nebraska–Lincoln and the University of Nebraska College of Law, Grasz spent eleven years as the state of Nebraska's Chief Deputy Attorney General. He was a senior partner at the law firm of Husch Blackwell prior to his appointment to the federal judiciary.