Ontario and Quebec Railway
A Canadian railway company used by Canadian Pacific to assemble and operate a major rail network across southern and eastern Ontario and into Quebec.
Last updated August 25, 2026
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Overview
The Ontario and Quebec Railway (O&Q) was a Canadian railway company established in 1881 to build a route between Toronto and Perth, Ontario. Although formally organized as a separate corporation, it was closely associated with the Canadian Pacific Railway (CPR) from the beginning. Most of the shares issued by the O&Q were held by people connected with CPR, allowing Canadian Pacific to use the company as a vehicle for developing a competitive railway system in southern Ontario and establishing through connections toward Ottawa, Montreal, Windsor, and the United States border. Construction of the original O&Q route began in 1882. The line between Toronto and Perth was completed in August 1884, with a connection to the CPR-controlled Brockville and Ottawa Railway through a short branch. In the same period, Canadian Pacific formalized its control by obtaining a 999-year lease of the O&Q. The lease, which was to run until 2883, made the railway an important operating component of the CPR system even though the O&Q remained a distinct legal company for much of its existence. The company’s importance grew through a combination of leases, acquisitions, corporate agreements, and route extensions. The O&Q became associated with the Credit Valley Railway and its leased London Junction Railway route, the Toronto Grey and Bruce Railway, portions of the Canada Southern Railway system, and the Atlantic and North-west Railway. These arrangements gave Canadian Pacific access to a broad network linking Toronto with western Ontario, including routes toward Owen Sound and Windsor, as well as eastward connections through Smiths Falls and into Quebec. An extension from Smiths Falls to the Quebec border, together with the Atlantic and North-west Railway arrangements, created a direct through route toward Montreal by 1888. Another important component was the West Ontario Pacific Railway, whose line connected the Credit Valley route at Woodstock with Windsor and the United States border. The line opened in 1887 and was immediately leased to the O&Q. Through these interconnected routes, the O&Q helped Canadian Pacific challenge the Grand Trunk Railway and establish a substantial presence in Ontario’s passenger and freight markets. The railway’s legacy remains visible in the Canadian Pacific route structure. Its western section forms part of the modern CPR main line between Windsor, Detroit-area connections, and Toronto, passing through North Toronto and reaching the Toronto Yard at Agincourt. The route east of Toronto continued through Peterborough and Havelock, where it served industrial traffic including mines and quarries. Much of the original Toronto–Perth traffic was later redirected to a CPR route closer to Lake Ontario, but the O&Q alignment from Perth onward remained part of the principal CPR route to Montreal. Several portions of the original network were later abandoned. The section between Glen Tay and Tweed closed in 1971, while the Tweed–Havelock section was abandoned in 1988 and subsequently became part of the Trans Canada Trail. Other sections continued under Canadian Pacific subdivision names, including the Havelock Subdivision between Toronto and Smiths Falls, the Winchester Subdivision from Perth toward Quebec, the Galt Subdivision between Woodstock and London, and the Windsor Subdivision between London and Windsor. The former North Toronto Station, once the O&Q’s principal passenger station in Toronto, was later repurposed as an LCBO flagship retail location. The O&Q was finally amalgamated with the Toronto, Hamilton and Buffalo-related Canadian Pacific corporate railway structure through the creation of the St. Lawrence and Hudson Railway in 1998. Its separate corporate identity therefore ended, although substantial portions of its routes continued to function within Canadian Pacific’s successor network.
History
The Ontario and Quebec Railway was chartered in March 1881 to construct a railway between Toronto and Perth, Ontario. The company was effectively created under Canadian Pacific Railway influence: approximately 95 percent of its issued shares were held by people connected with CPR. This ownership structure allowed Canadian Pacific to develop routes in southern Ontario without initially absorbing every line into its own corporate identity. Construction began in 1882, and the Toronto–Perth line was completed in August 1884. The route connected at Perth, through a short branch, with the Brockville and Ottawa Railway, which was controlled by Canadian Pacific. In 1884, CPR secured a 999-year lease of the O&Q, scheduled to expire in 2883. From then onward, the railway was operated as part of the CPR network, although the O&Q continued to exist as a separate corporation for many years. Canadian Pacific used the O&Q to assemble a broad Ontario and Quebec system. The company worked with or acquired interests in the Credit Valley Railway, the London Junction Railway, the Toronto Grey and Bruce Railway, the Canada Southern Railway, and the Atlantic and North-west Railway. Parliamentary and corporate arrangements authorized the O&Q to amalgamate with, acquire, or lease lines from several of these companies. The purpose was to create a continuous railway system serving Toronto, Ottawa, Montreal, western Ontario, and the American border. The Credit Valley Railway was particularly significant. It provided routes west from Toronto and connections toward Woodstock and London, while the Toronto Grey and Bruce arrangement extended the network northwest toward Owen Sound and other destinations. The West Ontario Pacific Railway connected Woodstock with Windsor and the United States border. It opened in 1887 and was immediately leased to the O&Q. In 1888, an extension from Smiths Falls to the Quebec border, combined with an Atlantic and North-west Railway connection, gave CPR a direct through route toward Montreal. By 1890, the lease and associated arrangements had produced a large CPR-controlled network reaching between Quebec City and Windsor and extending from the Ottawa area toward Mattawa. The O&Q therefore functioned less as an independent railway brand than as a corporate and legal instrument through which Canadian Pacific expanded its competitive position against the Grand Trunk Railway. The O&Q’s separate legal status occasionally created complications. Canadian Pacific attempted to dispose of certain valuable Toronto real estate associated with the O&Q, but the fact that CPR did not own every part of the O&Q generated a legal dispute. The matter ultimately reached the Supreme Court of Canada, which ruled in Canadian Pacific’s favour. Parts of the original railway remain in service or have been incorporated into later CPR infrastructure. The western route forms part of the CPR main line from Windsor and Detroit-area connections to Toronto. The eastern route continues from Perth toward Montreal. The Toronto–Smiths Falls route is known as the Havelock Subdivision, while the Perth–Quebec, Woodstock–London, and London–Windsor portions are identified as the Winchester, Galt, and Windsor subdivisions respectively. The line from Glen Tay to Tweed was abandoned in 1971, and the Tweed–Havelock section was abandoned in 1988 before becoming part of the Trans Canada Trail. In 1998, a Canadian Pacific reorganization amalgamated the O&Q and the Toronto Grey and Bruce into the St. Lawrence and Hudson Railway. This ended the O&Q as a distinct corporate railway, but many of its corridors and operating functions survived within successor Canadian Pacific systems.
- 1998
Corporate identity ends in St. Lawrence and Hudson reorganization
[1]The O&Q was amalgamated with the Toronto Grey and Bruce into the St. Lawrence and Hudson Railway during a Canadian Pacific reorganization.
- 1988
Tweed–Havelock section abandoned
[1]The Tweed–Havelock portion was abandoned and later became part of the Trans Canada Trail.
- 1971
Glen Tay–Tweed section abandoned
[1]The section between Glen Tay and Tweed was removed from railway service.
- 1890
CPR-controlled system reaches across Ontario and Quebec
[1]The lease and related railway arrangements gave Canadian Pacific routes connecting Quebec City, Windsor, the Ottawa region, and points toward Mattawa.
- 1888
Through route toward Montreal established
[1]An extension from Smiths Falls to the Quebec border and an Atlantic and North-west Railway connection created a direct CPR route toward Montreal.
- 1887
West Ontario Pacific Railway opens
[1]The West Ontario Pacific Railway opened between Woodstock and Windsor and was immediately leased to the O&Q.
- 1884
Toronto–Perth line completed
[1]The original line was completed in August, with a connection at Perth to the CPR-controlled Brockville and Ottawa Railway.
- 1884
Canadian Pacific takes a 999-year lease
[1]CPR formalized its operating control of the O&Q through a lease extending to 2883.
- 1882
Construction begins
[1]Construction started on the planned Toronto–Perth route.
- 1881
O&Q receives its charter
[1]The railway was chartered to build a line between Toronto and Perth, Ontario, under strong financial and managerial influence from Canadian Pacific Railway interests.
Products and positioning
A strategically controlled railway platform that enabled Canadian Pacific to consolidate routes across southern and eastern Ontario and extend its network into Quebec and toward the United States border.
Railway route · 1884
Toronto–Perth railway route
The original O&Q route linked Toronto with Perth in eastern Ontario and connected at Perth, through a short branch, with the Brockville and Ottawa Railway. It formed the foundation of the company’s later role in Canadian Pacific’s Ontario network.
Freight and passenger rail corridor · 1888
Toronto–Montreal through service
Through the Smiths Falls–Quebec extension and its relationship with the Atlantic and North-west Railway, the O&Q provided a route toward Montreal. The corridor became part of the broader Canadian Pacific railway system and remains represented by the route from Perth toward Quebec.
Railway route · 1887
West Ontario Pacific route
The West Ontario Pacific Railway connected Woodstock with Windsor and the United States border. After opening in 1887, it was immediately leased to the O&Q and became an important western component of the Canadian Pacific system.
Railway infrastructure service · 1881
Railway leasing and network integration
The O&Q’s principal commercial function was the ownership, leasing, acquisition, and integration of railway lines. Through arrangements involving the Credit Valley, Toronto Grey and Bruce, London Junction, Canada Southern, and Atlantic and North-west railways, it enabled Canadian Pacific to operate a large connected system.
Brand decisions
1998
Amalgamation into St. Lawrence and Hudson RailwayM&ABackground
Canadian Pacific undertook a corporate reorganization of its railway subsidiaries and associated companies.
Action taken
The Ontario and Quebec Railway was amalgamated with the Toronto Grey and Bruce to form the St. Lawrence and Hudson Railway.
Aftermath
The O&Q ceased to exist as a separate corporate railway, while many of its routes continued under Canadian Pacific successor operations.
1884
CPR adopts long-term lease strategyStrategyBackground
Canadian Pacific needed an operating structure through which it could control and expand railway routes in Ontario while the O&Q remained a distinct legal company.
Action taken
CPR obtained a 999-year lease of the Ontario and Quebec Railway, establishing long-term operational control.
Aftermath
The O&Q became a central component of the CPR network and helped support expansion toward western Ontario, Ottawa, Montreal, and the United States border.
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