Edward Sadlowski (September 10, 1938 – June 10, 2018) was an American labor activist associated with Steelworkers Fight Back, a rank-and-file movement against corruption in the international United Steelworkers of America union. Sadlowski became the youngest president of his local union at U.S. Steel's South Works, later served as director of District 31 (the union's largest district, encompassing Chicago and Gary, Indiana), and became known nationally during his unsuccessful attempt to become the international union's president in 1977.[1]