PoliCan > People: Prime ministers/Premiers

Canada’s electoral encyclopedia

Canada’s heads of government

by Maurice Y. Michaud (he/him)

William Lyon Mackenzie King (1874–1950)
© Photo

— Public domain

William Lyon Mackenzie King is Canada’s longest serving prime minister. He was the head of six governments — three majorities and three minorities — but they were not consecutive. Combined, he served in that office a total of 21 years and 154 days.

His first term started on December 21, 1921, and ended June 28, 1926.
His second term started on September 25, 1926, shortly after Arthur Meighen short-lived Conservative government was voted out of office, and ended on August 6, 1930.
His last term started on October 23, 1935, and ended at his resignation as prime minister on November 14, 1948.

Remember that in our parliamentary system, the head of state is King Charles III, represented by the governor general federally and the lieutenant governors in the provinces and territories. The prime minister and the premiers are the heads of government.

Find them here: there have been 321 so far.

Premiers and prime ministers

Jurisdiction Political family	Any PC LIB CONS PC LIB NDP PC LIB PC LIB UN LIB PQ CAQ PC LIB NDP LIB PC GOV CONS BCU COAL SC NPD LIB NDP SC PC UPC SPP PC NDP SKP GOV PC LIB LPM NDP YP NDP LIB
Order	From last to first From first to last Alphabetically by name

© 2005, 2025 :: PoliCan.ca (Maurice Y. Michaud)

Pub.: 16 Jun 2022 22:27

Rev.:  1 Sep 2025 13:08 (but data presented dynamically)

© 2005-2025 :: PoliCan.ca
Given that electoral results are by their very nature public information, such data presented in PoliCan are considered to be in the public domain. However, unless indicated otherwise, all other elements — the concept of consolidating these data into a single format, the detailed research on each election, legislature and candidate, the organization and searchability of the data, the programming allowing the entry and maintenance of the data, as well as the analyses, explanatory articles and opinions found in this website — are the intellectual property of Maurice Y. Michaud.