Tidenham is a village and civil parish in the Forest of Dean of west Gloucestershire, England, adjoining the Welsh border. Tidenham is bounded by the River Wye to the west and the River Severn to the south. Offa's Dyke runs through the western part of the parish, terminating at Sedbury cliff above the River Severn.

Forest of Dean is a local government district in west Gloucestershire, England, named after the Forest of Dean. Its council is based in Coleford. Other towns and villages in the district include Blakeney, Cinderford, Drybrook, English Bicknor, Huntley, Littledean, Longhope, Lydbrook, Lydney, Mitcheldean, Newnham and Newent.