The parish church of St Mary and St Nicholas in Saunderton, Buckinghamshire was built in 1227, originally only dedicated to St Mary. St Nicholas had a different church but this fell into disrepair and was demolished in 1452. St Mary's was re-dedicated to St Nicholas as well.
The church has a nave and a chancel. The former has a bell turret with a steep pyramid roof. The church was rebuilt in the late 1880s after the walls started to lean inwards. The church is built from flint with a stone dressing.