Legislative Assembly of Ontario

Legislative Assembly of Ontario Assemblée législative de l'Ontario
44th Parliament of Ontario
Coat of arms
Type
Type	Unicameral house of the Legislature of Ontario
History
Founded	July 1, 1867 (1867-07-01)
Preceded by	Legislative Assembly of the Province of Canada (pre-confederation) Legislative Assembly of Upper Canada (pre-union)
Leadership
Speaker	Donna Skelly, PC since April 14, 2025
Premier	Doug Ford, PC since June 29, 2018
Leader of the Official Opposition	Marit Stiles, NDP since February 4, 2023
Government House Leader	Stephen J. Clark, PC since June 6, 2024
Opposition House Leader	John Vanthof, NDP since February 3, 2021
Structure
Seats	124
Political groups	His Majesty's Government   Progressive Conservative (79) His Majesty's Loyal Opposition   New Democratic (27) Parties with official status   Liberal (14) Parties without official status   Green (2)   Independent (2)   Vacant (0)
Elections
Voting system	First-past-the-post
Last election	February 27, 2025
Next election	On or before April 11, 2030
Meeting place
Ontario Legislative Building, Toronto, Ontario, Canada
Website
www.ola.org

This article is about the legislative assembly as an institution. For the legislature currently in office (members elected in February 2025), see 44th Parliament of Ontario. For the list of previous legislatures, see Legislature of Ontario § List of Parliaments.

The Legislative Assembly of Ontario (OLA; French: Assemblée législative de l'Ontario) is the legislative chamber vested with the law-making authorities and the oversight of the Government of Ontario, the provincial government of the Canadian province Ontario. It consists of 124 members, known as members of Provincial Parliament (MPPs), elected by Canadian citizens residing in geographical divisions known formally as electoral districts. The assembly meets at the Ontario Legislative Building, its home since 1892 located at Queen's Park in the provincial capital of Toronto. Most of the current members of the assembly were elected in the most recent general election held in February 2025.

Formally, the Legislature of Ontario, as in the institution formally vested with the relevant legislative and oversight authorities, is a unicameral legislature consists of two elements: the Lieutenant Governor of Ontario as the representative of the King of Canada in Ontario, and the Legislative Assembly of Ontario. Bills passed by the legislative assembly come into effect when they are given royal assent by the lieutenant governor. Given the legislature's unicameral design and the lieutenant governor's limited formal discretionary authority over government matters, the assembly in office is in practice the legislature, and therefore is often referred to as such. It is also often referred to as the Ontario Provincial Parliament due to the members' formal title as MPPs.

The Government of Ontario operates as a Westminster-style parliamentary government in which voters indirectly elect the government through the MPPs elected for individual electoral districts using a first-past-the-post system. The premier of Ontario (the province's head of government) holds office by virtue of their ability to command the confidence of the assembly, by convention (but not necessarily) sitting as an MPP themselves and leading the largest party or a coalition in the assembly. The largest party not forming the government is known as the Official Opposition, its leader being recognized as the Leader of the Opposition.

The legislative assembly is the second largest Canadian provincial deliberative assembly by number of members after the National Assembly of Quebec.

Owing to the location of the Legislative Building on the grounds of Queen's Park, the metonym Queen's Park is often used to refer to both the provincial government and the legislative assembly.