Prince Edward County, Ontario, Canada
Black River is an unincorporated Dispersed Rural Community in the municipality of South Stormont, United Counties of Stormont, Dundas and Glengarry in eastern Ontario, Canada.
Black River may refer to several rivers by that name in the province of Ontario.
Ontario is one of the thirteen provinces and territories of Canada. Located in Central Canada, it is Canada's most populous province, with 38.3 percent of the country's population, and is the second-largest province in total area. Ontario is the fourth-largest jurisdiction in total area when the territories of the Northwest Territories and Nunavut are included. It is home to the nation's capital city, Ottawa, and the nation's most populous city, Toronto, which is also Ontario's provincial capital.