The 1972 Australian federal election was held in Australia on 2 December 1972. All 125 seats in the House of Representatives were up for election, as well as a single Senate seat in Queensland. The incumbent Liberal–Country coalition government, led by Prime Minister William McMahon, was defeated by the opposition Labor Party led by Gough Whitlam. Labor's victory ended 23 years of successive Coalition governments that began in 1949 and started the three-year Whitlam Labor Government.