St Mary's Church in South Tidworth, Wiltshire, England, was built in 1878. It is recorded in the National Heritage List for England as a designated Grade I listed building, and is now a redundant church in the care of the Churches Conservation Trust. Outside the church is an avenue of yew trees the largest of which has a girth of 7 feet 9 inches (2.36 m). The church was declared redundant on 1 September 1972, and was vested in the Trust on 19 December 1973. Access to the church is restricted after vandalism in 2016.