David Ross Brower (July 1, 1912 – November 5, 2000) was a prominent environmentalist and the founder of many environmentalist organizations, including the Sierra Club Foundation, the John Muir Institute for Environmental Studies, Friends of the Earth (1969), the League of Conservation Voters, Earth Island Institute (1982), North Cascades Conservation Council, and Fate of the Earth Conferences.

During the 1960s Sierra Club campaigns against the building of dams in Grand Canyon National Park, Brower played a central role.