The following is a list of political parties in Ontario, Canada. Parties represented in the Legislative Assembly of Ontario Other parties registered with Elections Ontario Parties listed in the order they are alphabetized by 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 (first election 1934) 1932–1961 (Independent) 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 (pre-1837 ruling clique) Other historical parties Toronto municipal parties See also List of Ontario general elections Elections Ontario References Parties Ontario fr:Partis politiques canadiens#Ontario