Stephen Anderson Smith (born March 9, 1962) is an American environmentalist, clean energy advocate and peace activist. He was a former Democratic nominee for Tennessee's 2nd congressional district in the United States House Representatives in 1996. In 1988, Smith was a cofounder of the Foundation for Global Sustainability and the Oak Ridge Environmental Peace Alliance (OREPA). He is currently the Executive Director of the Southern Alliance for Clean Energy and the Southern Alliance for Clean Energy Action Fund.