Southern Ontario is part of the Canadian province of Ontario that is south of the Algonquin Park. It is the farthest south part of Canada.

██ Main area
██ Extended area
Over 12 million people live here, more than anywhere else in Canada.
Some cities in Southern Ontario are Toronto, Ottawa, Barrie, Guelph, Hamilton, Kingston, Kitchener, London, St. Catharines, Niagara Falls, Waterloo, and Windsor.