John William Sullivan (born 7 February 1929) is an Australian former politician. Sullivan was born in Narrandera, New South Wales and educated at Narranderra High School, St Patrick's College, Goulburn, Royal Military College, Duntroon. He married Mollie O'Sullivan in July 1955 and they had two daughters and two sons. He was the Country Party member for Sturt in the New South Wales Legislative Assembly from February to August 1981, winning the 1981 by-election caused by Tim Fischer's resignation to contest the 1980 by-election for the seat of Murray.