Kenwalch's Castle is probably an Iron Age hill fort that may have been converted into a Roman fortress in Penselwood, Somerset, England, 6.6 kilometres (4 mi) East South East of Bruton at grid reference ST747335. It is situated in Castle Wood which covers its defences and interior. The latter has an area of 1.6 hectares (4.0 acres). There is a single rampart and ditch which are well preserved in places.