St Peter's Church is the Church of England parish church of the parish of Ardingly in Mid Sussex, one of seven local government districts in the English county of West Sussex. The present building dates from the 14th century and was restored during the Victorian era, but Christian worship on the site has a much longer history. The stone-built, Decorated Gothic-style church, west of the village centre, has been designated a Grade I Listed building.

Ardingly is an English village and civil parish in the Mid Sussex district of West Sussex, England. The village is in the High Weald Area of Outstanding Natural Beauty about 33 miles (53 km) south of London and 33 miles (53 km) east-north-east of the county town of Chichester. The parish covers an area of 3,974 acres (1,608 ha). The 2011 Census recorded a population of 1,936 an increase from 1,833 in 2001.