List of political parties in Ontario

Parties represented in the [Legislative Assembly of Ontario]

Other parties registered with Elections Ontario

Unregistered parties

• League for Socialist Action
• North American Labour Party
• Ontario Humanist Party
• Socialist Party of Ontario

  Historical parties that held seats in the Legislative Assembly

• Co-operative Commonwealth Federation 1932–1961
• Labour 1874-1937
• Labor-Progressive Party 1941-1959
• Liberal-Labour 1943-1970s
• Liberal-Progressive 1934-1940
• Soldier 1919-1923
• Patrons of Industry 1894
• Protestant Protective Association 1894
• United Farmers of Ontario 1918-1940

  Pre-Confederation parties

• Clear Grits pre-Confederation
• Reform Party pre-Confederation
• Family Compact

  Other historical parties

Toronto municipal parties