Age at Total Prime Date of Start date beginning End date time Date of SNo Lifespan Minister birth of (first) term of (first) of (final) term in death term office 27,905 John A. January 11, 52 years, 6,934 June 6, days 1 July 1, 1867 June 6, 1891 Macdonald 1815 171 days days 1891 (76 years, 146 days) 25,647 Alexander January 28, 51 years, 1,797 April 17, days 2 November 7, 1873 October 9, 1878 Mackenzie 1822 283 days days 1892 (70 years, 80 days) 26,530 March 12, 70 years, 527 October days 3 John Abbott June 16, 1891 November 24, 1892 1821 96 days days 30, 1893 (72 years, 232 days) 17,929 John November 47 years, 737 December days 4 December 5, 1892 December 12, 1894 Thompson 10, 1845 25 days days 12, 1894 (49 years, 32 days) 34,316 Mackenzie December 70 years, 493 December days 5 December 21, 1894 April 27, 1896 Bowell 27, 1823 359 days days 10, 1917 (93 years, 348 days) 34,452 Charles 74 years, 68 October days 6 July 2, 1821 May 1, 1896 July 8, 1896 Tupper 304 days days 30, 1915 (94 years, 120 days) 28,212 Wilfrid November 54 years, 5,563 February days 7 July 11, 1896 October 5, 1911 Laurier 20, 1841 234 days days 17, 1919 (77 years, 89 days) 30,299 Robert June 26, 57 years, 3,196 June 10, days 8 October 10, 1911 July 10, 1920 Borden 1854 106 days days 1937 (82 years, 349 days) 31,461 Arthur June 16, 46 years, 625 August 5, days 9 July 10, 1920 September 25, 1926 Meighen 1874 24 days days 1960 (86 years, 50 days) 27,610 W.L. December 47 years, 7,826 July 22, days 10 Mackenzie December 29, 1921 November 15, 1948 17, 1874 12 days days 1950 (75 years, King 217 days) 28,116 60 years, 1,903 June 26, days 11 R.B. Bennett July 3, 1870 August 7, 1930 October 23, 1935 35 days days 1947 (76 years, 358 days) 33,411 Louis St. February 1, 66 years, 3,140 July 25, days 12 November 15, 1948 June 21, 1957 Laurent 1882 288 days days 1973 (91 years, 174 days) 30,647 John September 61 years, 2,131 August days 13 June 21, 1957 April 22, 1963 Diefenbaker 18, 1895 276 days days 16, 1979 (83 years, 332 days) 27,641 Lester B. April 23, 65 years, 1,825 December days 14 April 22, 1963 April 20, 1968 Pearson 1897 364 days days 27, 1972 (75 years, 248 days) 29,566 Pierre October 18, 48 years, 5,642 September days 15 April 20, 1968 June 30, 1984 Trudeau 1919 185 days days 28, 2000 (80 years, 346 days) 27,281 39 years, 273 days 16 Joe Clark June 5, 1939 June 4, 1979 March 3, 1980 364 days days (74 years, 252 days) 30,931 55 years, 79 days 17 John Turner June 7, 1929 June 30, 1984 September 17, 1984 23 days days (84 years, 250 days) 27,358 Brian March 20, 45 years, 3,203 days 18 September 17, 1984 June 25, 1993 Mulroney 1939 181 days days (74 years, 329 days) 24,446 Kim March 10, 46 years, 132 days 19 June 25, 1993 November 4, 1993 Campbell 1947 107 days days (66 years, 339 days) 29,252 January 11, 59 years, 3,690 days 20 Jean Chrétien November 4, 1993 December 12, 2003 1934 297 days days (80 years, 32 days) 27,562 August 28, 65 years, 787 days 21 Paul Martin December 12, 2003 February 6, 2006 1938 106 days days (75 years, 168 days) 20,012 Stephen April 30, 46 years, 2,928 days 22 February 6, 2006 Incumbent Harper 1959 282 days days (54 years, 288 days)

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Original source : en.wikipedia.org/wiki/List_of_Prime_Ministers_of_Canada_by_longevity