Sunningdale is a populous village with a retail area and a civil parish in the Royal Borough of Windsor and Maidenhead. It takes up the extreme south-east corner of Berkshire, England. It has a railway station on the (London) Waterloo to Reading Line and is adjoined by green buffers including Sunningdale Golf Club and Wentworth Golf Club. Its northern peripheral estates adjoin Virginia Water Lake.
Sunningdale adjoins Surrey, and lies across Sunninghill (from which it takes its name) from Ascot. It is south of Virginia Water Lake. It is centred 23.2 miles (37.3 km) west south-west of Charing Cross, London. Major nearest towns are spread 5.5 to 6.5 miles away: Bracknell, Camberley, Staines upon Thames and Woking. It is connected to two of these by the A30 old trunk road, via which Camberley benefits from a flyover over the main intersecting road (the A322) at Bagshot. Sunningdale has a railway station on the Waterloo to Reading line. The A30, here bypassed by the M3 motorway a few miles distant, has one level crossing which was in the 19th century built near to the middle of the settlement.