| Willow Brook | |
| Pushpin Map: | New York Adirondack Park#USA |
| Pushpin Map Caption: | Location of the mouth of Willow Brook |
| Subdivision Type1: | Country |
| Subdivision Name1: | United States |
| Subdivision Type2: | State |
| Subdivision Name2: | New York |
| Subdivision Type3: | Region |
| Subdivision Name3: | Central New York Region |
| Subdivision Type4: | County |
| Subdivision Name4: | Otsego |
| Subdivision Type5: | Town |
| Subdivision Name5: | Otsego |
| Source1: | Moe Pond |
| Source1 Location: | NW of Cooperstown |
| Source1 Coordinates: | 42.7142°N -74.945°W |
| Source1 Elevation: | 1627feet[1] |
| Mouth: | Otsego Lake |
| Mouth Location: | Cooperstown |
| Mouth Coordinates: | 42.7033°N -74.9231°W[2] |
| Mouth Elevation: | 1188feet |
| Progression: | Willow Brook → Otsego Lake → Susquehanna River → Chesapeake Bay → Atlantic Ocean |
Willow Brook is a river in Otsego County, New York. It drains out of Moe Pond, flows through Cooperstown, and empties into Otsego Lake.[3]