NOTOC There is more than one place called Williamstown: Australia Williamtown (New South Wales) -- A town in New South Wales, Australia. Williamstown (South Australia) -- A town in South Australia. Williamstown (Victoria) -- A suburb of Melbourne in Australia. Canada Williamstown (Ontario) -- A town in Ontario province. Ireland Williamstown (Galway) -- A town in Galway in Ireland. United States of America Williamstown (Kentucky) -- A town which is the county seat of Grant County, Kentucky. Williamstown (Massachusetts) -- A town in Berkshires of Massachusetts. Williamstown (New Jersey) -- A place in Monroe Township in New Jersey. Williamstown (New York) -- A town in Oswego County, New York (state). Williamstown (Pennsylvania) -- A borough in Dauphin County in Pennsylvania. Williamstown (Vermont) -- A town in Orange County, Vermont. Williamstown (West Virginia) -- A town in Wood County, West Virginia on the Ohio River. Williamstown (Wisconsin) -- A town in Dodge County, Wisconsin. Williamstown Township (Michigan) -- A township in Ingham County, Michigan.