Niagara Falls, city (1991 pop. 75,399), S Ont., Canada, on the Niagara River opposite Niagara Falls, N.Y. Formerly called Clifton, it is a port of entry, an important industrial city, and the home of Canadian factories for many well-known U.S. firms. Electric power supplied by the falls supports industries that manufacture chemicals, abrasives, silverware, machinery, sporting equipment, and paper products. The falls are also an international attraction that anchor a tourist industry that includes a casino, hotels, and various amusements. Between the city and the falls and along the gorge below the falls is Queen Victoria Park.