Editing Legislative Assembly of Ontario (section)

{{Short description|Unicameral legislature of Ontario}}
{{Use Canadian English|date=December 2021}}
{{Use mdy dates|date=December 2021}}
{{More citations needed|date=July 2013}}

{{Infobox legislature
 | name          = Legislative Assembly of Ontario  
 | native_name   = {{nobold|{{lang|fr|Assemblée législative de l'Ontario}}}}
 | coa_pic       = Ontario Legislative Assembly arms.jpg<!--Please do not change this without a thorough discussion on the Talk page-->
 | coa_caption   = [[#Coat of arms|Coat of arms]]
 | legislature   = [[44th Parliament of Ontario]]
 | session_room  = Legislative Assembly - panoramio.jpg
 | house_type    = Unicameral house
 | body          = Legislature of Ontario
 | foundation    = {{Start date|1867|07|01}}
 | preceded_by   = [[Legislative Assembly of the Province of Canada]] (pre-confederation)<br />[[Legislative Assembly of Upper Canada]] (pre-union)
 | election1     = November 14, 2023
 | leader2_type  = [[Speaker of the Legislative Assembly of Ontario|Speaker]]
 | leader2       = [[Donna Skelly]]
 | party2        = [[Progressive Conservative Party of Ontario|PC]]
 | election2     = April 14, 2025
 | leader3_type  = [[Premier of Ontario|Premier]]
 | leader3       = [[Doug Ford]]
 | party3        = [[Progressive Conservative Party of Ontario|PC]]
 | election3     = June 29, 2018
 | leader4_type  = [[Leader of the Official Opposition (Ontario)|Leader of the Official Opposition]]
 | leader4       = [[Marit Stiles]]
 | party4        = [[Ontario New Democratic Party|NDP]]
 | election4     = February 4, 2023
 | leader5_type  = [[Government House Leader (Ontario)|Government<br />House Leader]]
 | leader5       = [[Stephen J. Clark]]
 | party5        = [[Progressive Conservative Party of Ontario|PC]]
 | election5     = June 6, 2024
 | leader6_type  = [[House Leader|Opposition<br />House Leader]]
 | leader6       = [[John Vanthof]]
 | party6        = [[Ontario New Democratic Party|NDP]]
 | election6     = February 3, 2021
 | members       = 124
| structure1     = Ontario 2025 General Election seat result.svg
| session_res    = 
| structure1_res = 250px
| political_groups1  = '''[[Government of Ontario|His Majesty's Government]]'''
*{{Color box|{{Canadian party colour|CA|Conservative}}|border=darkgray}} [[Progressive Conservative Party of Ontario|Progressive Conservative]]<nowiki> (80)</nowiki>
'''[[Official Opposition (Canada)|His Majesty's Loyal Opposition]]'''
*{{color box|#F4A460|border=darkgray}} [[Ontario New Democratic Party|New Democratic]] (27)
'''[[Official party status|Parties with official status]]'''
*{{color box|#EA6D6A|border=darkgray}} [[Ontario Liberal Party|Liberal]] (14)
'''Parties without official status'''
*{{color box|#98CA66|border=darkgray}} [[Green Party of Ontario|Green]] (2)
*{{color box|#c3c3c3|border=darkgray}} [[Independent (politician)|Independent]] (1)
<!-- *{{color box||border=darkgray}} Vacant -->

| voting_system1 = [[First-past-the-post voting|First-past-the-post]]
 | last_election1 = [[2025 Ontario general election|February 27, 2025]]
 | next_election1 = [[45th Ontario general election|No later than June 7, 2029]]
 | meeting_place = [[Ontario Legislative Building]], [[Toronto]], [[Ontario]], Canada
 | website       = {{URL|https://www.ola.org}}
}}
The '''Legislative Assembly of Ontario''' ('''OLA'''; {{langx|fr|Assemblée législative de l'Ontario}}) is the [[legislative chamber]] of the [[Provinces and territories of Canada|Canadian province]] of [[Ontario]]. Its elected members are known as [[Member of Provincial Parliament (Canada)|Members of Provincial Parliament]] (MPPs). Bills passed by the Legislative Assembly are given [[royal assent]] by the [[lieutenant governor of Ontario]] to become law. Together, the Legislative Assembly and Lieutenant Governor make up the [[Unicameralism|unicameral]] '''Legislature of Ontario'''.<ref>{{Cite web |date=November 3, 1999 |title=British North America Act, 1867, para 69 |url=https://www.justice.gc.ca/eng/rp-pr/csj-sjc/constitution/lawreg-loireg/p1t12.html |access-date=September 24, 2020 |website=Department of Justice Canada }}</ref><ref name="origins">{{cite web|url=http://speaker.ontla.on.ca/en/at-the-assembly/origins-of-mpp/|title=Origins of "MPP"|work=The Speaker of the Legislative Assembly of Ontario|access-date=April 5, 2016|archive-url=https://web.archive.org/web/20160310064906/http://speaker.ontla.on.ca/en/at-the-assembly/origins-of-mpp/|archive-date=March 10, 2016|url-status=dead}}</ref><ref>{{Cite canlaw|short title=Constitution Act, 1867|wikilink=Constitution Act, 1867|regtitle=|amended5=|amended4=|amended3=|amended2=|amended1=|type=|linkloc=Department of Justice Canada|abbr=30 & 31 Victoria|link=http://laws.justice.gc.ca/eng/Const/section-69.html|schedule=|division=|part=|subsection=|section=69|chapter=3 (U.K.)|year=1867|regnumber=}}.</ref> The assembly meets at the [[Ontario Legislative Building]] at [[Queen's Park, Toronto|Queen's Park]] in the provincial capital of [[Toronto]].

Ontario uses a [[Westminster System|Westminster-style]] [[parliamentary government]] in which members are elected to the Legislative Assembly through [[List of Ontario general elections|general elections]] using a [[Plurality voting|"first-past-the-post" system]]. The [[premier of Ontario]] (the province's [[head of government]]) holds office by virtue of their ability to [[Confidence and supply|command the confidence]] of the Legislative Assembly, typically sitting as an MPP themselves and lead the largest party or a [[Coalition government|coalition]] in the Legislative Assembly. The largest party not forming the government is known as the [[Official Opposition (Canada)|Official Opposition]], its leader being recognized as [[Leader of the Opposition (Ontario)|leader of the Opposition]].

The Ontario Legislature is sometimes referred to as the "Ontario Provincial Parliament". Members of the assembly refer to themselves as "Members of the Provincial Parliament" MPPs as opposed to "[[Members of the Legislative Assembly#Canada|Members of the Legislative Assembly]]" (MLAs) as in many other provinces. Ontario is the only province to do so, in accordance with a resolution passed in the Assembly on April 7, 1938. However, the ''Legislative Assembly Act'' refers only to "members of the Assembly". 

The Legislative Assembly is the second largest Canadian provincial deliberative assembly by number of members after the [[National Assembly of Quebec]]. Nevertheless, it is the most consequential provincial  assembly within Canada, as Ontario represents the largest province by [[Population of Canada by province and territory|population]] and [[List of Canadian provinces and territories by gross domestic product|economic output]].

Owing to the location of the Legislative Building on the grounds of [[Queen's Park (Toronto)|Queen's Park]], the [[metonymy|metonym]] "Queen's Park" is often used to refer to both the provincial government and the Legislative Assembly.<ref name="qp-name">{{cite web|title=Legacy of a People's Park|url=http://educationportal.ontla.on.ca/en/about-parliament/history/queen-s-parc-150-years-1860-2010/legacy-of-a-people-s-park|website=Education Portal|publisher=Legislative Assembly of Ontario|access-date=January 21, 2015|archive-url=https://web.archive.org/web/20150121173830/http://educationportal.ontla.on.ca/en/about-parliament/history/queen-s-parc-150-years-1860-2010/legacy-of-a-people-s-park|archive-date=January 21, 2015|url-status=dead}}</ref>