St Wystan's Church is a Church of England parish church in Repton, Derbyshire, that is famous for its Anglo-Saxon crypt which is the burial place of two Mercian kings. The church is recorded in the National Heritage List for England as a Grade I listed building, and is dedicated to the Anglo-Saxon Saint Wystan, who was formerly buried within the church's crypt.

Repton is a village and civil parish in the South Derbyshire district of Derbyshire, England, located on the edge of the River Trent floodplain, about 5 miles (8 km) north of Swadlincote. The population taken at the 2001 census was 2,707, increasing to 2,867 at the 2011 census. Repton is close to the county boundary with neighbouring Staffordshire and about 5 miles (8 km) northeast of Burton upon Trent.