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