Castley is a village and civil parish in the former Harrogate district of North Yorkshire, England. It lies on a bend in the River Wharfe about 10 miles (16 km) north of the centre of Leeds.[1] The population of the civil parish was estimated at 70 in 2015.[2] The village appears in the Domesday Book as Castleai, a combination of castel, and lēah, meaning the clearing near the fort.[3][4]
The greater part of the Arthington Viaduct, which carries the Leeds to Harrogate railway line across the Wharfe valley, stands within the parish.[5]