| High Rock Mountain | |
| Elevation Ft: | 889 |
| Elevation Ref: | [1] |
| Location: | Warren County, New Jersey, U.S. |
| Coordinates: | 40.8462°N -74.9779°W[2] |
| Topo: | USGS Washington |
| Easiest Route: | Hiking |
High Rock Mountain is a mountain in Warren County, New Jersey. The summit rises to 889feet, and is located on the boundary of Liberty and White Townships. It is part of the New York–New Jersey Highlands of the Appalachian Mountains, although somewhat isolated to the west of the main body of the Highlands.
High Rock Mountain is not to be confused with High Rocks, a feature of the Kittatinny Valley.