List of Canadian Prime Ministers by age

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This is a list of Prime Ministers of Canada since Confederation in 1867, arranged in descending order of their age upon first taking office.

At 74 years 304 days, Charles Tupper was the oldest Prime Minister upon first taking office
At 74 years 304 days, Charles Tupper was the oldest Prime Minister upon first taking office
Joe Clark was the youngest Prime Minister.  He swore in the day before his 40th birthday.
Joe Clark was the youngest Prime Minister. He swore in the day before his 40th birthday.
Rank Prime Minister Date of Birth First mandate begins Age
(years/days)
1 Charles Tupper July 2, 1821 May 1, 1896 74y 304d
2 John Abbott March 12, 1821 June 16, 1891 70y 96d
3 Mackenzie Bowell December 27, 1824 December 21, 1894 69y 359d
4 Louis St. Laurent February 1, 1882 November 15, 1948 66y 288d
5 Lester B. Pearson April 23, 1897 April 24, 1963 66y 1d
6 Paul Martin April 28, 1938 December 12, 2003 65y 228d
7 John Diefenbaker September 18, 1895 June 21, 1957 61y 276d
8 Richard Bennett July 3, 1870 August 7, 1930 60y 35d
9 Jean Chrétien January 11, 1934 November 4, 1993 59y 297d
10 Robert Borden June 26, 1854 October 10, 1911 57y 104d
11 John Turner June 7, 1929 June 30, 1984 55y 23d
12 Wilfrid Laurier November 20, 1841 July 11, 1896 54y 234d
13 John A. Macdonald January 11, 1815 July 1, 1867* 52y 171d
14 Alexander Mackenzie January 28, 1822 November 7, 1873 51y 283d
15 Pierre Trudeau October 18, 1919 April 20, 1968 48y 185d
16 John Sparrow Thompson November 10, 1845 December 5, 1892 47y 25d
17 William Lyon Mackenzie King December 17, 1874 December 29, 1921 47y 12d
18 Stephen Harper April 30, 1959 February 6, 2006 46y 282d
19 Kim Campbell March 18, 1947 June 25, 1993 46y 99d
20 Arthur Meighen June 16, 1874 July 10, 1920 46y 24d
21 Brian Mulroney March 20, 1939 September 17, 1984 45y 181d
22 Joe Clark June 5, 1939 June 4, 1979 39y 364d

* Date of Confederation. John A. Macdonald began his first mandate as Joint Premier of the pre-confederation Province of Canada on May 24, 1856, when he was 41y 144d old, which would make him the second-youngest on the list.

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