James Robert Porter (born 19 February 1950) is an Australian politician. He was a Liberal Party of Australia member of the Australian House of Representatives from 1975 to 1990, representing the regional South Australian seat of Barker. Porter was born in Adelaide into a wealthy establishment family, and studied law and economics at the University of Adelaide. He became a barrister and solicitor, as well as managing a large rural property owned by his family in the south-east of the state, where his family had large holdings. He also served as a lieutenant in the army reserve.