| Kalkberg | |
| Location: | SE of Catskill, New York, U.S. |
| Coordinates: | 42.199°N -73.9029°W |
| Coordinates Ref: | [1] |
| Topo: | USGS Cementon |
| Map: | New York Adirondack Park#USA |
Kalkberg also known as "Collar Back" is a ridge in Greene County, New York, United States. It is located in the Catskill Mountains southeast of Catskill. Kykuit is located east-northeast and Quarry Hill is located north of Kalkberg.