Black Rock Forest is a 3,830-acre (1,550 ha) privately owned nature preserve in the western Hudson Highlands region of the U.S. state of New York. It is in Orange County, mostly in the town of Cornwall, with the southern fringe overlapping into the neighboring town of Highlands. It is managed for educational, recreational and scientific purposes by The Black Rock Forest Consortium, a group of similarly-oriented organizations.
First established by a local resident in 1928, the forest was the property of Harvard University until 1989. The consortium has invested heavily in facilities to not only improve its research and educational missions but promote sustainability, erecting several green buildings in the middle of the forest with guest facilities, classrooms and laboratories. Its educational facilities are used by groups at every level, from the primary elementary grades to college undergraduates. Over 400 papers have been published from research done in the forest.