<Table> <Tr> <Th> </Th> <Th> Prime Minister </Th> <Th> Incumbency </Th> <Th> Years in power </Th> <Th> Number of Mandates </Th> <Th> Comments </Th> </Tr> <Tr> <Td> </Td> <Td> King ! William Lyon Mackenzie King </Td> <Td> 7001210000000000000 ♠ 21 years , 7002154000000000000 ♠ 154 days </Td> <Td> 1921 -- 1926 , 1926 -- 1930 , 1935 -- 1948 </Td> <Td> 3 majority & 3 minority </Td> <Td> William Lyon Mackenzie King served for three full terms in majority governments ; two full terms in minority governments supported by opposition parties ; and one short term under a minority government cut short by the King - Byng Affair after which he was replaced by Arthur Meighen . </Td> </Tr> <Tr> <Td> </Td> <Td> Macdonald ! Sir John A. Macdonald </Td> <Td> 7001180000000000000 ♠ 18 years , 7002359000000000000 ♠ 359 days </Td> <Td> 1867 -- 1873 , 1878 -- 1891 </Td> <Td> 6 majority </Td> <Td> Sir John A. Macdonald served full terms in four of his six majority governments . His second term in a majority government was cut short by the Pacific Scandal , with Alexander Mackenzie taking over , and his last was cut short by his death , after which four others served out the end of his final term . </Td> </Tr> <Tr> <Td> </Td> <Td> P.E. Trudeau ! Pierre Trudeau </Td> <Td> 7001150000000000000 ♠ 15 years , 7002164000000000000 ♠ 164 days </Td> <Td> 1968 -- 1979 , 1980 -- 1984 </Td> <Td> 3 majority & 1 minority </Td> <Td> Pierre Trudeau served for three full terms in majority governments and one short term in a minority government . The final months of his last term were served out by John Turner . </Td> </Tr> <Tr> <Td> </Td> <Td> Laurier ! Sir Wilfrid Laurier </Td> <Td> 7003556300000000000 ♠ 15 years , 86 days </Td> <Td> 1896 -- 1911 </Td> <Td> 4 majority </Td> <Td> Sir Wilfrid Laurier served for four full terms in majority governments . He served the longest uninterrupted term of any prime minister . </Td> </Tr> <Tr> <Td> </Td> <Td> Chrétien ! Jean Chrétien </Td> <Td> 7003369000000000000 ♠ 10 years , 38 days </Td> <Td> 1993 -- 2003 </Td> <Td> 3 majority </Td> <Td> Jean Chrétien served for three full terms in majority governments . The final six months of his last term were served out by Paul Martin . </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Harper ! Stephen Harper </Td> <Td> 7003355800000000000 ♠ 9 years , 271 days </Td> <Td> 2006 -- 2015 </Td> <Td> 1 majority & 2 minority </Td> <Td> Stephen Harper served for two short terms in minority governments and one full term in majority government . </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Mulroney ! Brian Mulroney </Td> <Td> 7003320300000000000 ♠ 8 years , 281 days </Td> <Td> 1984 -- 1993 </Td> <Td> 2 majority </Td> <Td> Brian Mulroney served for two full terms in majority governments . The final months of his last term were served out by Kim Campbell . </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Borden ! Sir Robert Borden </Td> <Td> 7003319600000000000 ♠ 8 years , 274 days </Td> <Td> 1911 -- 1920 </Td> <Td> 2 majority </Td> <Td> Sir Robert Borden served for two full terms in majority governments . The final year and a half of his last term were served out by Arthur Meighen . </Td> </Tr> <Tr> <Td> 9 </Td> <Td> St. Laurent ! Louis St. Laurent </Td> <Td> 7003314000000000000 ♠ 8 years , 218 days </Td> <Td> 1948 -- 1957 </Td> <Td> 2 majority </Td> <Td> Louis St. Laurent served out the end of William Lyon Mackenzie King 's last term after the latter 's retirement . He then served for two full terms in majority governments . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Diefenbaker ! John Diefenbaker </Td> <Td> 7003213100000000000 ♠ 5 years , 305 days </Td> <Td> 1957 -- 1963 </Td> <Td> 1 majority & 2 minority </Td> <Td> John Diefenbaker served for one full term in a majority government and two short terms in minority governments . </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Bennett ! R.B. Bennett </Td> <Td> 7003190300000000000 ♠ 5 years , 77 days </Td> <Td> 1930 -- 1935 </Td> <Td> 1 majority </Td> <Td> R.B. Bennett served for one full term in a majority government . </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Pearson ! Lester B. Pearson </Td> <Td> 7003182500000000000 ♠ 4 years , 364 days </Td> <Td> 1963 -- 1968 </Td> <Td> 2 minority </Td> <Td> Lester B. Pearson served for two short terms in minority governments . The final months of his last term were served out by Pierre Trudeau . </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Mackenzie ! Alexander Mackenzie </Td> <Td> 7003179700000000000 ♠
<Table> <Tr> <Th> </Th> <Th> Prime Minister </Th> <Th> Incumbency </Th> <Th> Years in power </Th> <Th> Number of Mandates </Th> <Th> Comments </Th> </Tr> <Tr> <Td> </Td> <Td> King ! William Lyon Mackenzie King </Td> <Td> 7001210000000000000 ♠ 21 years , 7002154000000000000 ♠ 154 days </Td> <Td> 1921 -- 1926 , 1926 -- 1930 , 1935 -- 1948 </Td> <Td> 3 majority & 3 minority </Td> <Td> William Lyon Mackenzie King served for three full terms in majority governments ; two full terms in minority governments supported by opposition parties ; and one short term under a minority government cut short by the King - Byng Affair after which he was replaced by Arthur Meighen . </Td> </Tr> <Tr> <Td> </Td> <Td> Macdonald ! Sir John A. Macdonald </Td> <Td> 7001180000000000000 ♠ 18 years , 7002359000000000000 ♠ 359 days </Td> <Td> 1867 -- 1873 , 1878 -- 1891 </Td> <Td> 6 majority </Td> <Td> Sir John A. Macdonald served full terms in four of his six majority governments . His second term in a majority government was cut short by the Pacific Scandal , with Alexander Mackenzie taking over , and his last was cut short by his death , after which four others served out the end of his final term . </Td> </Tr> <Tr> <Td> </Td> <Td> P.E. Trudeau ! Pierre Trudeau </Td> <Td> 7001150000000000000 ♠ 15 years , 7002164000000000000 ♠ 164 days </Td> <Td> 1968 -- 1979 , 1980 -- 1984 </Td> <Td> 3 majority & 1 minority </Td> <Td> Pierre Trudeau served for three full terms in majority governments and one short term in a minority government . The final months of his last term were served out by John Turner . </Td> </Tr> <Tr> <Td> </Td> <Td> Laurier ! Sir Wilfrid Laurier </Td> <Td> 7003556300000000000 ♠ 15 years , 86 days </Td> <Td> 1896 -- 1911 </Td> <Td> 4 majority </Td> <Td> Sir Wilfrid Laurier served for four full terms in majority governments . He served the longest uninterrupted term of any prime minister . </Td> </Tr> <Tr> <Td> </Td> <Td> Chrétien ! Jean Chrétien </Td> <Td> 7003369000000000000 ♠ 10 years , 38 days </Td> <Td> 1993 -- 2003 </Td> <Td> 3 majority </Td> <Td> Jean Chrétien served for three full terms in majority governments . The final six months of his last term were served out by Paul Martin . </Td> </Tr> <Tr> <Td> 6 </Td> <Td> Harper ! Stephen Harper </Td> <Td> 7003355800000000000 ♠ 9 years , 271 days </Td> <Td> 2006 -- 2015 </Td> <Td> 1 majority & 2 minority </Td> <Td> Stephen Harper served for two short terms in minority governments and one full term in majority government . </Td> </Tr> <Tr> <Td> 7 </Td> <Td> Mulroney ! Brian Mulroney </Td> <Td> 7003320300000000000 ♠ 8 years , 281 days </Td> <Td> 1984 -- 1993 </Td> <Td> 2 majority </Td> <Td> Brian Mulroney served for two full terms in majority governments . The final months of his last term were served out by Kim Campbell . </Td> </Tr> <Tr> <Td> 8 </Td> <Td> Borden ! Sir Robert Borden </Td> <Td> 7003319600000000000 ♠ 8 years , 274 days </Td> <Td> 1911 -- 1920 </Td> <Td> 2 majority </Td> <Td> Sir Robert Borden served for two full terms in majority governments . The final year and a half of his last term were served out by Arthur Meighen . </Td> </Tr> <Tr> <Td> 9 </Td> <Td> St. Laurent ! Louis St. Laurent </Td> <Td> 7003314000000000000 ♠ 8 years , 218 days </Td> <Td> 1948 -- 1957 </Td> <Td> 2 majority </Td> <Td> Louis St. Laurent served out the end of William Lyon Mackenzie King 's last term after the latter 's retirement . He then served for two full terms in majority governments . </Td> </Tr> <Tr> <Td> 10 </Td> <Td> Diefenbaker ! John Diefenbaker </Td> <Td> 7003213100000000000 ♠ 5 years , 305 days </Td> <Td> 1957 -- 1963 </Td> <Td> 1 majority & 2 minority </Td> <Td> John Diefenbaker served for one full term in a majority government and two short terms in minority governments . </Td> </Tr> <Tr> <Td> 11 </Td> <Td> Bennett ! R.B. Bennett </Td> <Td> 7003190300000000000 ♠ 5 years , 77 days </Td> <Td> 1930 -- 1935 </Td> <Td> 1 majority </Td> <Td> R.B. Bennett served for one full term in a majority government . </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Pearson ! Lester B. Pearson </Td> <Td> 7003182500000000000 ♠ 4 years , 364 days </Td> <Td> 1963 -- 1968 </Td> <Td> 2 minority </Td> <Td> Lester B. Pearson served for two short terms in minority governments . The final months of his last term were served out by Pierre Trudeau . </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Mackenzie ! Alexander Mackenzie </Td> <Td> 7003179700000000000 ♠
who was the longest running prime minister of canada
who was the longest running prime minister of canada
William Lyon Mackenzie King
William Lyon Mackenzie King