Prime Minister of Australia prime minister, otherwise William McMahon63. Robert Menzies was the oldest person to ever be prime minister, leaving office at 71 years old. The longest-serving Prime Minister was Sir Robert Menzies, who served in office twice: from 26 April 1939 to 28 August 1941, and again from 19 December 1949 to 26 January 1966. In total Robert Menzies spent 18 years, 5 months and 12 days in office. He served under the United Australia Party and the Liberal Party respectively. The shortest-serving Prime Minister was Frank Forde, who was appointed to the position on 6 July 1945 after the death of
Prime Minister of Turkey Prime Minister of Turkey The Prime Minister of the Republic of Turkey (Turkish: "Türkiye Cumhuriyeti Başbakanı") was the head of government of the Republic of Turkey from 1920 to 2018. The prime minister was the leader of a political coalition in the Turkish parliament (Meclis) and the leader of the cabinet. The last holder of the position is Binali Yıldırım of the Justice and Development Party (AKP), who took office on 24 May 2016. In the Ottoman Empire, the prime minister of the Ottoman sultan held the title of Grand Vizier (). After the Tanzimat period in the 19th century,