Jack Schaffer (born October 12, 1942) is an American politician and businessman. Born in Chicago, Illinois, Schaffer served in the United States Army. He received his bachelor's degree from Northern Illinois University. He owned an outdoor advertising business and a self-storage business in Crystal Lake, Illinois. From 1999 to 2003, Schaffer then served as a consultant and lobbyist and was Commissioner of the Illinois Office of Banks and Real Estate. In 2006, Schaffer was appointed to the Metra Board, and in 2009, he was elected treasurer.