William David Hamilton (born July 14, 1950 in Buckhannon, West Virginia) is an American politician. He is a member of the West Virginia Senate from the 11th district. He was a member of the West Virginia House of Delegates representing District 45 from January 12, 2013 to December 1, 2018. Hamilton served consecutively from January 2003 until January 2013 in the District 39 seat.