Populated places on Lake Ontario in Canada

Toronto is the most populous city in Canada and the capital city of the Canadian province of Ontario. With a 2021 Census population of 2,794,356, the city is the fourth-most populous city in North America. Toronto is the anchor of the Golden Horseshoe, an urban agglomeration surrounding the western end of Lake Ontario with an estimated population of 11,198,136 in 2025. As of 2025, the Toronto census metropolitan area had an estimated population of 7,106,379. Toronto is an international centre of business, finance, arts, sports, and culture, and is recognized as one of the most multicultural an

city in Ontario, Canada

city in Ontario, Canada

Oshawa is a city in Ontario, Canada, on the Lake Ontario shoreline. It lies in Southern Ontario, approximately east of downtown Toronto. It is commonly viewed as the eastern anchor of the Greater Toronto Area and of the Golden Horseshoe. It is the largest municipality in the Regional Municipality of Durham. The name Oshawa originates from the Ojibwa term , meaning "the crossing place" or just "a cross".

city in Ontario, Canada

city in Halton Region, Ontario, Canada

city in Ontario, Canada

town in Halton Region, Ontario, Canada

city in Durham Region, Ontario, Canada

town in Durham Region, Ontario, Canada

thumb|right|The Court House, a Shaw Festival theatre and [[Parks Canada headquarters of Niagara National Historic Sites, built in 1847.]] thumb|right|St. Mark's Church (Niagara-on-the-Lake)|St. Mark's Church, built in 1809, founded in 1791

town in Durham Region, Ontario, Canada

Cobourg ( ) is a town in the Canadian province of Ontario, located in Southern Ontario east of Toronto and east of Oshawa. It is the largest town in and seat of Northumberland County. Its nearest neighbour is Port Hope, to the west. It is located along Highway 401 (exits 472 and 474) and the former Highway 2 (now Northumberland County Road 2). To the south, Cobourg borders Lake Ontario. To the north, east and west, it is surrounded by Hamilton Township.

Clarington (2021 population 101,427) is a lower-tier municipality in the Regional Municipality of Durham in Ontario, Canada. It was incorporated in 1973 as the town of "Newcastle" with the merging of the town of Bowmanville, the Village of Newcastle, and the townships of Clarke and Darlington, and was established on January 1, 1974. In 1993, the town was renamed "Clarington", a blending of the names of the two former townships. Darlington today is largely suburban, while Clarke remains largely rural. Bowmanville is the largest community in the municipality and is the home of the municipal offi

city in Ontario, Canada

town in Niagara Region, Ontario, Canada

municipality in Northumberland County, Ontario, Canada

community in Quinte West, Ontario

town in Northumberland County, Ontario, Canada

island in Frontenac County, Ontario, Canada

community in Ontario, Canada

township municipality in Lennox and Addington County, Ontario, Canada

island in Ontario, Canada

Mimico (, ) is a neighbourhood (and a former municipality) in Toronto, Ontario, Canada, being located in the south-west area of Toronto on Lake Ontario. It is in the south-east corner of the former Township (and later, City) of Etobicoke, and was an independent municipality from 1911 to 1967.

township municipality in Northumberland County, Ontario, Canada

neighbourhood in Toronto, Canada

human settlement in Mississauga, Ontario, Canada

neighborhood in Toronto