| Centennial Park Reservoir | |
|---|---|
 Centennial Park Reservoir | |
| Location | 3R Oxford Street, Centennial Park, New South Wales, Australia |
| Coordinates | 33°53′29″S 151°14′19″E / 33.8913°S 151.2386°E |
| Built | 1896–1898 |
| Architect | NSW Public Works Department |
| Owner | Sydney Water |
| Official name | Centennial Park Reservoir WS001 |
| Type | State heritage (built) |
| Designated | 18 November 1999 |
| Reference no. | 1320 |
| Type | Water Supply Reservoir/Dam |
| Category | Utilities – Water |
| Builders | NSW Department of Public Works |
  Location of Centennial Park Reservoir in Sydney | |
The Centennial Park Reservoir or WS001 is a heritage-listed underground reservoir at 3R Oxford Street, Centennial Park, 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.
A sign attached to a building on the site states that this is known as "Centennial Park Reservoir WS0023". The reservoir is adjacent to Woollahra Reservoir, which is closer to York Street. The area is enclosed by a wire fence but the enclosed area is accessible and in November 2022 a few people were walking dogs in the area. A playing field was marked out on part of the enclosed area.