| Dun Brook Mountain | |
| Listing: | Adirondack Hundred Highest |
| Location: | ENE of Blue Mountain Lake, New York, U.S. |
| Coordinates: | 43.8908°N -74.3189°W |
| Coordinates Ref: | [1] |
| Topo: | USGS Dun Brook Mountain |
| Map: | New York Adirondack Park#USA |
Dun Brook Mountain is a mountain located in Adirondack Mountains of New York located in the town of Indian Lake east-northeast of Blue Mountain Lake. Tirrell Mountain is located west and Tirrel Pond is located west-southwest of Dun Brook Mountain.
In May 1911, the Conservation Commission erected a wood tower on the mountain. The tower ceased fire watching operations in 1920.[2]