Tendring is a local government district in North East Essex, England. It extends from the River Stour in the north, to the coast and the River Colne in the south, with the coast to the East and the town of Colchester to the west. Its council is based in Clacton-on-Sea. Towns in the district include Frinton-on-Sea, Walton-on-the-Naze, Brightlingsea and Harwich. Large villages in the district include St Osyth and Great Bentley.

Sometimes referred to as the "Tendring Peninsula", the district was formed on 1 April 1974 as a merger of the borough of Harwich, with Brightlingsea, Clacton and Frinton and Walton urban districts, and Tendring Rural District. The name Tendring comes from the ancient Tendring Hundred which is named after the small Tendring village at the centre of the area. The Tendring Poor Law Union covered the same area as the present district.

During the English civil war, the witch-finder general, Matthew Hopkins carried out many trials throughout this and the surrounding area especially in the towns of Manningtree and Mistley on the River Stour.