v t e Subdivisions of Ontario
Counties	Bruce Dufferin Elgin Essex Frontenac Grey Haliburton Hastings Huron Lambton Lanark Leeds and Grenville Lennox and Addington Middlesex Northumberland Perth Peterborough Prescott and Russell Renfrew Simcoe Stormont, Dundas and Glengarry Wellington
Districts	Algoma Cochrane Kenora Manitoulin Nipissing Parry Sound Rainy River Sudbury Thunder Bay Timiskaming
Regional municipalities	Durham Halton Muskoka Niagara Oxford Peel Waterloo York
Single-tier municipalities	Brant Brantford Chatham-Kent Greater Sudbury Haldimand Hamilton Kawartha Lakes Norfolk Ottawa Prince Edward Toronto
Separated municipalities	Barrie Belleville Brockville Cornwall Gananoque Guelph Kingston London Orillia Pembroke Peterborough Prescott Quinte West Smiths Falls St. Marys St. Thomas Stratford Windsor
Regions	Southern Ontario Central Ontario Eastern Ontario Golden Horseshoe Southwestern Ontario Northern Ontario Northeastern Ontario Northwestern Ontario
Ontario communities Ontario municipalities Ontario electoral districts Former counties of Ontario Geography of Ontario Ontario portal Category:Ontario WikiProject: Ontario

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