Ardingly is a village and civil parish in the High Weald Area of Outstanding Natural Beauty about north of Haywards Heath in the Mid Sussex district of the local government county of West Sussex, within historic Sussex England. The village is about south of London, south-south-west of East Grinstead, southeast of Crawley, north of Brighton and east northeast of the county town of Chichester.
There is mention of a place spelt as Ertlyngeleghe, in 1396, which may refer to Ardingley.
The village is on the B2028 road. The parish covers an area of . The 2001 Census recorded 1,833 people in 627 households of whom 830 were economically active.