The Toronto subway is a system of five underground, surface, and elevated urban rail transit lines in Toronto and Vaughan, Ontario, Canada, operated by the Toronto Transit Commission (TTC). It was the country's first rapid transit system: the first line was built under Yonge Street with a short stretch along Front Street and opened in 1954 with 12 stations. Since then, the system has expanded to become Canada's largest in terms of number of stations and its busiest, with an average of about 1.1 million passenger trips each weekday recorded during the first quarter of 2025. There are a total of 109 operating stations with an additional 26 under construction and 5 former stations.
The subway system encompasses five lines and 109 stations on of route. Plans were originally set to ensure all stations were made accessible by 2025; however, in September 2024, it was reported this goal would not be met. , College, Islington, King, Museum, Spadina, and Old Mill stations are not fully accessible. Line 3 Scarborough, a light metro line with six stations, was permanently closed in July 2023.
a new rapid transit line is under construction: