William D. Reilich (born 1957) is an American politician best known for having served as a New York State Assemblyman. As of 2014, he serves as Supervisor of the Town of Greece.Reilich is a small businessman who founded an alarm systems company in 1975 which he eventually sold. He now owns Rochester Auto Design.Reilich began his political career by serving on the Greece, New York zoning and environment boards, eventually becoming the GOP chair for the Town of Greece.