Holderness was a local government district and borough in northern England, named for the Holderness peninsula. It was formed on 1 April 1974 along with the non-metropolitan county of Humberside in which it was situated. It was formed from part of the administrative county of Yorkshire, East Riding, namely: * The municipal borough of Hedon, * The urban districts of Hornsea and Withernsea, * The Holderness Rural District. On 1 April 1996, Humberside and the borough were abolished, and it became part of the new unitary East Riding of Yorkshire.