The Centennial Park Reservoir or WS001 is a heritage-listed underground reservoir at 3R Oxford Street, Centennial Park, City of Randwick, New South Wales, Australia. It was designed and built by NSW Public Works Department from 1896 to 1898. The property is owned by Sydney Water, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 18 November 1999.