Who is Australia's longest-serving Prime Minister

Sir Robert Gordon Menzies (20 December 1894 – 15 May 1978), was the Prime Minister of Australia from 1939 to 1941 and again from 1949 to 1966. He is Australia's longest-serving prime minister, serving over 18 years in total.

Former Australian PM Sir Robert Gordon Menzies was one of the founding fathers of the Liberal Party. Source: SBS

Menzies studied law at the University of Melbourne and became one of Melbourne's leading lawyers. He was Deputy Premier of Victoria from 1932 to 1934, and then transferred to federal parliament, subsequently becoming Attorney-General and Minister for Industry in the government of Joseph Lyons. In April 1939, following Lyons' death, Menzies was elected leader of the United Australia Party (UAP) and sworn in as prime minister. He authorised Australia's entry into World War II in September 1939, and in 1941 spent four months in England to participate in meetings of Churchill's war cabinet. On his return to Australia in August 1941, Menzies found that he had lost the support of his party and consequently resigned as prime minister. He subsequently helped to create the new Liberal Party, and was elected its inaugural leader in August 1945.

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