| Type: | town |
| Greenwich Park | |
| State: | nsw |
| Coordinates: | -34.5817°N 149.9344°W |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in New South Wales |
| Lga: | Upper Lachlan Shire |
| County: | King |
| Parish: | Cookbundoon |
| Region: | Southern Tablelands |
| Postcode: | 2580[1] |
| Pop: | 162 |
| Elevation: | 729 |
| Stategov: | Goulburn |
| Fedgov: | Hume |
| Dist1: | 29 |
| Dir1: | NE |
| Location1: | Goulburn |
| Dist2: | 54 |
| Dir2: | W |
| Location2: | Moss Vale |
| Dist3: | 113.3 |
| Dir3: | NE |
| Location3: | Yass |
| Dist4: | 183.8 |
| Dir4: | SW |
| Location4: | Sydney |
| Near-Nw: | Chatsbury |
| Near-N: | Myrtleville |
| Near-Ne: | Big Hill |
| Near-E: | Brayton |
| Near-Se: | Carrick |
| Near-S: | Towrang |
| Near-Sw: | Goulburn |
| Near-W: | Tarlo |
Greenwich Park is a locality in the Upper Lachlan Shire, in the Southern Tablelands region of New South Wales, Australia. At the, it had a population of 162.
As of the 2021 Australian census, 162 people resided in Greenwich Park, up from 120 in the . The median age of persons in Greenwich Park was 52 years. There were more males than females, with 50.3% of the population male and 49.7% female. The average household size was 2.5 people per household.