The Ontario Legislative Building in 2010

The Legislature of Ontario (also commonly known as the Provincial Parliament of Ontario) is made of two elements: the lieutenant governor (representing the King of Canada), and the Legislative Assembly of Ontario. The Legislature was established on July 1, 1867 following the creation of Ontario as one of the first four provinces of Canada. The seat of the Legislature has been the Ontario Legislative Building in Queen's Park, Toronto since 1893.

Like the Canadian federal government, Ontario uses a Westminster-style parliamentary government, in which members are sent to the Legislative Assembly after general elections. Like all the provincial governments, the concept of responsible government is followed, and the Premier of Ontario and their cabinet is accountable to the Legislative Assembly.

List of Parliaments

This is a list of the Parliaments of the Ontario Legislative Assembly, the legislature of the Canadian province of Ontario, since Canadian Confederation in 1867. The Legislative Assembly has existed since 1867 when the British North America Act, 1867 severed the Province of Canada into two new provinces, with the portion then called Canada West becoming Ontario. For the Parliaments prior to Confederation, see Parliament of the Province of Canada (1841 to 1867) and Parliament of Upper Canada (1791 to 1841).

Assembly Seats/SessionsElection (ministry formed) dissolutionConservative/Progressive Conservative New Democratic Party Co-operative Commonwealth Federation Liberal United Farmers of Ontario Labour
Conservative/Progressive Conservative New Democratic Party Co-operative Commonwealth FederationLiberal United Farmers of Ontario Labour
Premier (ministry) Command of parliamentLeader of the opposition of other recognized partiesSpeaker
1st Parliament 82 seats, 4 sessionsSeptember 3, 1867 February 25, 1871John Sandfield Macdonald (ministry)Archibald McKellar(de facto to Feb 1870)Edward Blake (from Feb 1870)John Stevenson
2nd Parliament 82 seats, 4 sessionsMarch 21, 1871Richard Scott (1871)
December 19, 1871Edward Blake (ministry) 40 / 74(54%)Matthew Crooks Cameron (to 1878)James Currie (1871–73) Rupert Wells (1874)
October 25, 1872 December 21, 1874Oliver Mowat (ministry) 2nd 59 / 88(67%) 3rd 51 / 88(58%) 4th 57 / 88(65%) 5th 50 / 88(57%) 6th 57 / 90(63%) 7th 55 / 91(60%) 8th 59 / 94(63%)
3rd Parliament 88 seats, 4 sessionsJanuary 18, 1875 April 25, 1879Rupert Wells
William Ralph Meredith (from 1878)
4th Parliament 88 seats, 4 sessionsJune 5, 1879 February 1, 1883Charles Clarke
5th Parliament 88 seats, 3 sessionsFebruary 27, 1883 November 15, 1886
6th Parliament 90 seats, 4 sessionsDecember 28, 1886 April 26, 1890Jacob Baxter
7th Parliament 91 seats, 4 sessionsJune 5, 1890 May 29, 1894Thomas Ballantyne
8th Parliament 94 seats, 4 sessionsJune 26, 1894George Marter (to 1896)William Balfour (to 1896)
July 21, 1896 January 28, 1898Arthur Hardy (ministry) 8th 62 / 93(67%) 9th 51 / 94(54%)James WhitneyFrancis Evanturel (from 1897)
9th Parliament 94 seats, 5 sessionsMarch 1, 1898
October 20, 1899 April 19, 1902George Ross (ministry) 9th 50 / 91(55%) 10th 50 / 98(51%)
10th Parliament 98 seats, 2 sessionsMay 29, 1902 December 13, 1904William Charlton
11th Parliament 98 seats, 4 sessionsJanuary 25, 1905 May 2, 1908James Whitney (ministry) 11th 70 / 98(71%) 12th 86 / 106(81%) 13th 82 / 106(77%) 14th 84 / 111(76%)George Ross (to Jan 1907) George P. Graham (to Sept 1907)Joseph St. John (to 1907)
Alexander Grant MacKay (from Sept 1907)Thomas Crawford (from 1907)
12th Parliament 106 seats, 3 sessionsJune 8, 1908 November 13, 1911
13th Parliament 106 seats, 3 sessionsDecember 11, 1911 May 29, 1914Newton Rowell (resigned 1917)William Hoyle
14th Parliament 111 seats, 5 sessionsJune 29, 1914David Jamieson
October 2, 1914 September 23, 1919William Hearst (ministry) 84 / 111(76%)William Proudfoot (from 1917)
15th Parliament 111 seats, 4 sessionsOctober 20, 1919 May 10, 1923Ernest Drury (ministry)58 /111 (52%) Walter RolloHartley Dewart (to 1921) Wellington Hay (1921 onward) Howard FergusonNelson Parliament
Walter Rollo
Howard Ferguson
16th Parliament 111 seats, 3 sessionsJune 25, 1923 October 18, 1926Howard Ferguson (ministry) 16th 75 / 111(68%) 17th 74 / 112(66%) 18th 92 / 112(82%)W. E. N. SinclairJoseph Thompson
17th Parliament 112 seats, 3 sessionsDecember 1, 1926 September 17, 1929William Black
18th Parliament 112 seats, 5 sessionsOctober 30, 1929Thomas Kidd
December 16, 1930 May 16, 1934George Stewart Henry (ministry) 91 / 112(81%)
19th Parliament 90 seats, 3 sessionsJune 19, 1934 August 25, 1937Mitchell Hepburn (ministry) 19th 70 / 90(78%) 20th 66 / 90(73%)George Stewart Henry (to 1939)Norman Hipel(to 1938)
20th Parliament 90 seats, 8 sessionsOctober 6, 1937
October 21, 1942Gordon Daniel Conant (ministry) 62 / 84(74%)George Drew (1939 onward)James Clark (1939–43)
May 18, 1943 June 30, 1943Harry Nixon (ministry) 61 / 82(74%)
21st Parliament 90 seats, 2 sessionsAugust 4, 1943 Mar. 24, 1945George Drew (ministry) 21st 38 / 90(42%) 22nd 66 / 90(73%) 23rd 53 / 90(59%)Ted Jolliffe Harry NixonWilliam James Stewart (to 1947)
Harry Nixon
22nd Parliament 90 seats, 4 sessionsJune 4, 1945 April 27, 1948Farquhar Oliver
James Hepburn (from 1947)
23rd Parliament 90 seats, 4 sessionsJune 7, 1948Ted Jolliffe Farquhar OliverM.C. Davies
Farquhar Oliver
October 19, 1948Thomas Laird Kennedy (ministry) 53 / 90(59%)
May 4, 1949 October 6, 1951Leslie Frost (ministry) 23rd53 / 90(59%) 24th 79 / 90(88%) 25th 83 / 98(85%) 26th 71 / 98(72%)
24th Parliament 90 seats, 5 sessionsNovember 22, 1951 May 2, 1955Farquhar Oliver(to 1958)
25th Parliament 98 seats, 5 sessionsJune 9, 1955 May 4, 1959Alfred Downer
John Wintermeyer (from 1958)
26th Parliament 98 seats, 4 sessionsJune 11, 1959William Murdoch
November 8, 1961 Aug. 16, 1963John Robarts (ministry) 26th 70 / 98(71%) 27th 77 / 108(71%) 28th 69 / 117(59%)
27th Parliament 108 seats, 5 sessionsSeptember 25, 1963 September 5, 1967Farquhar Oliver (to 1964) Andy Thompson (1964–66) Robert Nixon (from 1966)Donald Morrow
28th Parliament 117 seats, 4 sessionsOctober 17, 1967Robert Nixon Donald C. MacDonald (to 1970) Stephen Lewis (from 1970)Frederick Cass
Donald C. MacDonald (to 1970) Stephen Lewis (from 1970)
Mar. 1, 1971 September 13, 1971Bill Davis (ministry) 28th 68 / 117(58%) 29th 78 / 117(67%) 30th 51 / 125(41%) 31st 58 / 125(46%) 32nd 70 / 125(56%)
29th Parliament 117 seats, 5 sessionsOctober 21, 1971 Aug. 11, 1975Allan Reuter (to 1974) Russell Rowe (from 1974)
30th Parliament 125 seats, 4 sessionsSeptember 18, 1975 April 29, 1977Stephen Lewis Robert Nixon (to 1976) Stuart Smith (from 1976)Russell Rowe
Robert Nixon (to 1976) Stuart Smith (from 1976)
31st Parliament 125 seats, 4 sessionsJune 9, 1977 February 2, 1981Stuart Smith Stephen Lewis (to 1978) Michael Cassidy (from 1978)Jack Stokes
Stephen Lewis (to 1978) Michael Cassidy (from 1978)
32nd Parliament 125 seats, 4 sessions (70 of 125 seats)March 19, 1981Robert Nixon (to 1982) Michael Cassidy (to 1982)John M. Turner
Michael Cassidy (to 1982)
February 8, 1985 March 25, 1985Frank Miller (ministry) 32nd 72 / 125(58%) 33rd 52 / 125(42%)David Peterson (from 1982) Bob Rae
Bob Rae
33rd Parliament 125 seats, 3 sessionsMay 2, 1985Hugh Edighoffer
June 26, 1985 July 31, 1987David Peterson (ministry) 33rd 73 /125 (58%) 34th 95 / 130(73%)Frank Miller (1985) Larry Grossman (from 1985) Bob Rae
Bob Rae
34th Parliament 130 seats, 2 sessionsSeptember 10, 1987 July 30, 1990Bob Rae Andy Brandt (to May 1990) Mike Harris (from May 1990)
Andy Brandt (to May 1990) Mike Harris (from May 1990)
35th Parliament 130 seats, 3 sessionsSeptember 6, 1990 April 28, 1995Bob Rae (ministry) 74 / 130(57%)Robert Nixon, Murray Elston, Jim Bradley (interim, to 1992) Lyn McLeod (from 1992) Mike HarrisDavid Warner
Mike Harris
36th Parliament 130 seats, 3 sessionsJune 8, 1995 May 5, 1999Mike Harris (ministry) 36th 82 / 130(63%) 37th 59 / 103(57%)Lyn McLeod (to 1996) Dalton McGuinty (from 1996) Bob Rae (to 1996) Howard Hampton (from 1996)Al McLean (to 1996) Edward Doyle (1996) Chris Stockwell (from 1996)
Bob Rae (to 1996) Howard Hampton (from 1996)
37th Parliament 103 seats, 4 sessionsJune 3, 1999Dalton McGuinty Howard HamptonGary Carr
Howard Hampton
April 15, 2002 June 26, 2003Ernie Eves (ministry) 57 / 103(55%)
38th Parliament 103 seats, 2 sessionsOctober 2, 2003 September 10, 2007Dalton McGuinty (ministry) 38th 72 / 103(70%) 39th 71 / 107(66%) 40th 53 / 107(50%)Ernie Eves (to 2004) John Tory (from 2004) Howard HamptonAlvin Curling(to 2005) Michael A. Brown(from 2005)
Howard Hampton
39th Parliament 107 seats, 2 sessionsOctober 10, 2007 September 7, 2011Bob Runciman (to 2009) Tim Hudak (from 2009) Howard Hampton (to 2009) Andrea Horwath (from 2009)Steve Peters
Howard Hampton (to 2009) Andrea Horwath (from 2009)
40th Parliament 107 seats, 2 sessionsOctober 6, 2011 February 11, 2013Tim Hudak Andrea HorwathDave Levac
Andrea Horwath
February 11, 2013 May 2, 2014Kathleen Wynne (ministry) 40th 53 / 107(50%) 41st 58 / 107(54%)
41st Parliament 107 seats, 3 sessionsJune 12, 2014 May 8, 2018Jim Wilson (to 2015) Patrick Brown (2015–18) Vic Fedeli (2018) Andrea Horwath
Andrea Horwath
42nd Parliament 124 seats, 2 sessionsJune 7, 2018 May 3, 2022Doug Ford (ministry) 42nd 76 / 124(61%) 43rd 83 / 124(67%) 44th 80 / 124(65%)Andrea HorwathTed Arnott
43rd Parliament 124 seats, 1 sessionJune 2, 2022 January 28, 2025Peter Tabuns (to Feb 2023) Marit Stiles (from 2023)
44th Parliament 124 seats, 1 sessionFebruary 27, 2025 (current parliament)Marit Stiles John FraserDonna Skelly
John Fraser

Sources

  • Ontario. . Past & Present MPPs. Office of the Legislative Assembly of Ontario. Archived from on March 16, 2007.
  • Ontario. . The Speaker. Office of the Legislative Assembly of Ontario. Archived from on July 4, 2007.