Erroll Brown Davis Jr. (born August 5, 1944) is an American administrator and businessman. Erroll earned a Bachelor of Science in electrical engineering from Carnegie Mellon University in 1965 and an MBA in finance from the University of Chicago in 1967. Davis is a former Democratic member of the Pennsylvania House of Representatives. From 1998 to 2010, he was a non-executive director of multinational oil company BP plc. In July 2011, Davis was appointed as APS's interim superintendent, to serve the position until June 30, 2012.