| Dates of Office | Leader | Political Affiliation |
|---|
| 01 Jul 1867 - 07 Nov 1873 | The Honourable Alexander Campbell | Conservative |
| 07 Nov 1873 - 14 Dec 1876 | The Honourable Luc Letellier de St-Just | Nationalist Liberal |
| 14 Dec 1876 - 07 Oct 1878 | The Honourable Sir Sir Richard William Scott | Liberal |
| 18 Oct 1878 - 26 Jan 1887 | The Honourable Alexander Campbell | Conservative |
| 12 May 1887 - 1891 | The Honourable Frank Smith | Liberal-Conservative |
| 1891 - 30 Oct 1893 | The Honourable Sir John Joseph Caldwell Abbott | Liberal-Conservative |
| 31 Oct 1893 - 27 Apr 1896 | The Honourable Sir Mackenzie Bowell | Conservative |
| 19 Aug 1896 - 18 Nov 1897 | The Honourable Sir Oliver Mowat | Liberal |
| 18 Nov 1897 - 7 Feb 1902 | The Honourable David Mills | Liberal |
| 14 Dec 1902 - 1908 | The Honourable Sir Richard William Scott | Liberal |
| 1909 - 6 Oct 1911 | The Honourable Sir Richard John Cartwright | Liberal |
| 10 Oct 1911 - 28 Dec 1921 | The Honourable Sir James Alexander Lougheed | Conservative |
| 29 Dec 1921 - 28 Jun 1926 | The Honourable Raoul Dandurand | Liberal |
| 28 Jun 1926 - 24 Sep 1926 | The Honourable William Benjamin Ross | Conservative |
| 25 Sep 1926 - 06 Aug 1930 | The Honourable Raoul Dandurand | Liberal |
| 07 Aug 1930 - 03 Feb 1931 | The Honourable Wellington Bartley Willoughby | Conservative |
| 03 Feb 1932 - 22 Oct 1935 | The Right Honourable Arthur Meighen | Conservative |
| 23 Oct 1925 - 11 Mar 1942 | The Honourable Raoul Dandurand | Liberal |
| 26 May 1942 - 24 Aug 1945 | The Honourable James Horace King | Liberal |
| 24 Aug 1945 - 14 Oct 1953 | The Honourable Wishart McLea Robertson | Liberal |
| 14 Oct 1953 - 21 Jun 1957 | The Honourable William Ross Macdonald | Liberal |
| 21 Jun 1957 - 09 Oct 1957 | Vacant |
|
| 09 Oct 1957 - 11 May 1958 | The Honourable John Thomas Haig | Progressive Conservative |
| 12 May 1958 - 30 Aug 1962 | The Honourable Walter Morley Aseltine | Progressive Conservative |
| 31 Aug 1962 - 21 Apr 1963 | The Honourable Alfred Johnson Brooks | Progressive Conservative |
| 22 Apr 1963 - 02 Feb 1964 | The Honourable William Ross Macdonald | Liberal |
| 03 Feb 1964 - 19 Apr 1968 | The Honourable John Joseph Connolly | Liberal |
| 20 Apr 1968 - 07 Aug 1974 | The Honourable Paul Joseph James Martin | Liberal |
| 08 Aug 1974 - 03 Jun 1979 | The Honourable Raymond Joseph Perrault | Liberal |
| 04 Jun 1979 - 02 Mar 1980 | The Honourable Jacques Flynn | Progressive Conservative |
| 03 Mar 1980 - 29 Sep 1983 | The Honourable Raymond Joseph Perrault | Liberal |
| 30 Sep 1983 - 29 Jun 1984 | The Honourable Bud Olson | Liberal |
| 30 Jun 1984 - 16 Sep 1984 | The Honourable Allan MacEachen | Liberal |
| 17 Sep 1984 - 29 Jun 1986 | The Honourable Duff Roblin | Progressive Conservative |
| 30 Jun 1986 - 03 Nov 1993 | The Honourable Lowell Murray | Progressive Conservative |
| 04 Nov 1993 - 10 Jun 1997 | The Honourable Joyce Fairbairn | Liberal |
| 11 Jun 1997 - 03 Oct 1999 | The Honourable Alasdair Bernard Graham | Liberal |
| 04 Oct 1999 - 08 Jan 2001 | The Honourable Bernie Boudreau | Liberal |
| 09 Jan 2001 - 11 Dec 2003 | The Honourable Sharon Carstairs | Liberal |
| 12 Dec 2003 - 06 Feb 2006 | The Honourable Jack Austin | Liberal |
| 06 Feb 2006 - 30 Aug 2013 | The Honourable Marjory LeBreton | Conservative |
| 30 Aug 2013 - 04 Nov 2015 | The Honourable Claude Carignan | Conservative |
