Via Rail in the context of "Crown corporation"

The Quebec City–Windsor Corridor (French: Corridor Québec-Windsor) is the most densely populated and heavily industrialized region of Canada. As its name suggests, the 1,150 km-long (710 mi) region extends from Quebec City in the northeast to Windsor, Ontario in the southwest. With more than 18 million people, it contains about half of the country's population and seven of Canada's 12 largest metropolitan areas, 3 of which are in the top 4 (based on the 2021 census). Its relative importance to Canada's economic and political infrastructure renders it akin to the Northeast megalopolis in the United States. The name was first popularized by Via Rail, which runs frequent passenger rail service in the region in its service area known as "The Corridor".

Canada has a large and well-developed railway system that primarily transports freight. There are two major publicly traded transcontinental freight railway systems, Canadian National (CN) and Canadian Pacific Kansas City (CPKC). Nationwide passenger services are provided by the federal crown corporation Via Rail, and three international services to the US by Amtrak. Three Canadian cities have commuter train services: in the Montreal area by Exo, in the Toronto area by GO Transit, and in the Vancouver area by West Coast Express. These cities and several others are also served by light rail or metro systems. Only one (Toronto) has an extensive streetcar (tram) system. Smaller railways such as Ontario Northland Railway also run passenger trains to remote rural areas. The Rocky Mountaineer and Royal Canadian Pacific provide luxury rail tours for viewing scenery in the Canadian Rockies as well as other mountainous areas of British Columbia and Alberta.

Canada has 49,422 kilometres (30,709 mi) total trackage, of which only 129 kilometres (80 mi) is electrified (all urban rail transit networks). Canada uses 1,435 mm (4 ft 8+1⁄2 in) standard gauge track for the majority of its railway system. The exceptions to this are small lines isolated from the main North American rail network used in resource industries such as mining or forestry, some of which are narrow gauge, and the streetcar and heavy-rail subway lines of the Toronto Transit Commission which use a broad gauge of 4 ft 10+7⁄8 in (1,495 mm).

The Quebec City–Windsor Corridor (French: Ligne de Québec à Windsor), also known as Ontario-Québec or the Corridor, is a Via Rail passenger train service in the Canadian provinces of Quebec and Ontario. The Corridor service area has the heaviest passenger train frequency in Canada and contributes 67% of Via's revenue.