| Crumhorn Lake | |
| Pushpin Map: | New York Adirondack Park#USA |
| Pushpin Map Caption: | Location of Crumhorn Lake within New York State |
| Location: | Otsego County, New York |
| Coords: | 42.5578°N -74.9217°W |
| Elevation: | [1] |
| Cities: | Portlandville, New York |
Crumhorn Lake is a lake located northeast of the hamlet of Portlandville in the Town of Milford in Otsego County, New York.