The Penshurst Reservoirs are heritage-listed reservoirs located at Laycock Road, Penshurst in the Georges River Council local government area of New South Wales, Australia. They were designed and built during 1895 by the NSW Public Works Department. The reservoirs are also known as WS87 & R88, Penshurst Elevated Steel Reservoir No 2 and Penshurst Elevated Concrete Reservoir No 3. The property is owned by Sydney Water, an agency of the Government of New South Wales. The site was added to the New South Wales State Heritage Register on 18 November 1999.

Penshurst is a suburb in southern Sydney, in the state of New South Wales, Australia. Penshurst is located 17 kilometres south of the Sydney central business district and is part of the St George area.