Bruce S. Kershner (April 17, 1950 - February 16, 2007) was an environmentalist, author and forest ecologist. He was a renowned old growth forest authority, and has discovered almost 300 old growth forests in Eastern North America where previously no one thought they existed. These include the second tallest hardwood forest in Eastern North America, outside of the southern Appalachians, New York State's oldest forest, and the largest assemblage of old growth (the Niagara River corridor). Kershner has published a dozen books including the Sierra Club Guide to Ancient Forests of the Northeast and Secret Places: Scenic Treasures of Western New York and Southern Ontario.