All Saints Church in Idmiston, Wiltshire, England, was built in the 12th century. It is recorded in the National Heritage List for England as a designated Grade I listed building and is in the care of The Churches Conservation Trust. It was declared redundant on 1 April 1977, and was vested in the Trust on 29 September 1978. The church was built of flint with interspersed limestone in the 12th and 13th centuries. It has a west tower with north and south asiles and a nave. The chancel has a north porch.