| Mongaup Mountain | |
| Location: | Frost Valley, New York, U.S. |
| Coordinates: | 41.9908°N -74.6842°W |
| Coordinates Ref: | [1] |
| Topo: | USGS Willowemoc |
| Map: | New York#USA |
Mongaup Mountain is a mountain located in the Catskill Mountains of New York west of Frost Valley. Cradle Rock Ridge is located north, and Beaver Kill Range is located east-northeast of Mongaup Mountain.