The Bidjigal Reserve is a 186-hectare (460-acre) reserve in New South Wales, Australia. It lies predominantly within The Hills Shire, with a small section south of the M2 Motorway in the City of Parramatta. The reserve lies in the suburbs of North Rocks, Northmead, Baulkham Hills, Castle Hill, West Pennant Hills, and Carlingford. The reserve lies south of Richard Webb Reserve in West Pennant Hills, with the majority located to the north of the M2 Motorway.