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 the Netherlands Prime Minister to direct other ministers on the costs of the Royal House, which are covered by several ministries. , there are three Prime Ministers of the Netherlands currently living, the oldest being Dries van Agt. The most recent former Prime Minister to die was Wim Kok who served 1994–2002 and died on 20 October 2018 at the age of . The Prime Minister is also Chairman of the Council of Ministers of the Kingdom of the Netherlands, and therefore also deals with matters affecting the other countries Aruba, Curaçao, and Sint Maarten in the Kingdom. The independent cabinets of