Yatton Keynell is a village and civil parish in Wiltshire, England. The village is on the B4039 road near Castle Combe, about 4 miles northwest of Chippenham, and about the same distance to the east of the county border with South Gloucestershire. The parish includes the hamlets of Broomfield, Giddeahall, Long Dean, Tiddleywink and West Yatton. The Bybrook River forms part of the western parish boundary.