Rosalie Barrow Edge (November 3, 1877 – November 30, 1962) was an American environmentalist and suffragist. In 1929, she established the Emergency Conservation Committee to expose the conservation establishment's ineffectiveness and advocate for species preservation. In 1934, Edge also founded the world's first preserve for birds of prey—Hawk Mountain Sanctuary near Kempton, Pennsylvania. Edge was considered the most militant conservationist of her time, and she clashed publicly for decades with leaders of the Audubon Society over approaches to wildlife preservation. An environmentalist colleague described her in 1948 as "the only honest, unselfish, indomitable hellcat in the history of conservation".