Green Party of Ontario was created in 1983.
Ontario Libertarian Party was created in 1975.
Representative Party of Ontario was created in 2004.
Ontario Liberal Party was created in 1857.
Reform Party of Ontario was created in 1989.
Humanist Party of Ontario was created in 1994.
Socialist Party of Ontario was created in 2011.
Northern Ontario Heritage Party was created in 1977.
Natural Law Party of Ontario was created in 1993.
People's Political Party of Ontario was created in 2011.
Progressive Conservative Party of Ontario was created in 1854.
Family Coalition Party of Ontario was created in 1987.