Port Dover is an unincorporated community and former town located in Norfolk County, Ontario, Canada on the north shore of Lake Erie. Prior to the War of 1812, this community was known as Dover Mills. This community is the southern terminus for Ontario Highway 6; located to the south of the Northern Ontario community of McKerrow. This highway stretches northward as a two-lane, undivided highway until the traffic flow increases to four lanes shortly after it departs from Caledonia. In addition to allowing Port Dover residents direct access to the city of Hamilton, it also briefly merges with Highway 403 to allow for access to the Royal Botanical Gardens and locations on to Toronto.