Wansdyke (from Woden's Dyke) is an early mediaeval defensive linear earthwork in the West Country of England, consisting of a ditch and a running embankment from the spoil. It runs from Maes Knoll, a hillfort close to Norton Malreward, in the Chew Valley south of Bristol, to the Savernake Forest near Marlborough in Wiltshire.
Wansdyke was a non-metropolitan district within the County of Avon, in the west of England. The district was created on April 1, 1974, from Keynsham and Norton-Radstock urban districts along with Bathavon Rural District and part of Clutton Rural District. On April 1, 1996, it was merged along with Bath into the Bath and North East Somerset unitary authority.