Eric Mann (born December 4, 1942) is a civil rights, anti-war, labor, and environmental organizer whose career spans more than 50 years. He has worked with the Congress of Racial Equality, Newark Community Union Project, Students for a Democratic Society (SDS), the Black Panther Party, the United Automobile Workers (including eight years on auto assembly lines) and the New Directions Movement. He was also active as a leader of SDS faction the Weathermen, which later became the militant left-wing organization Weather Underground. He was arrested in September 1969 for participation in a direct action against the Harvard Center for International Affairs and sentenced to two years in prison on charges of conspiracy to commit murder after two bullets were fired through a window of the Cambridge