Black Mountain State Forest is a state forest in Haverhill, New Hampshire, on the western slopes of Black Mountain, a summit at the western edge of the White Mountains. In 1920 a report was issued on the state forest area that was then and included a Black Mountain Lookout Station (no longer present). It was composed of pasture and young spruce. The original tract was purchased in 1919 and 1920. The state forest is bordered to the east by the White Mountain National Forest, which covers the summit of the mountain.