Kellaways - West Tytherton, River Avon SSSI () is a 4.1 hectare geological Site of Special Scientific Interest in Wiltshire, notified in 1998.
Located north east of Chippenham, this SSSI is of geological interest as the banks of the River Avon expose Callovian highly-fossiliferous sandstone which contains well-preserved bivalves, gastropods, brachiopods, belemnites and ammonites.