The Toronto Railway Company Belt Line was a streetcar route that operated in Toronto, Ontario, Canada. The route was created by the Toronto Railway Company in 1891 and taken over by the Toronto Transportation Commission in 1921, which cancelled the route in 1923 as part of its reorganization of streetcar routes. The Belt Line operated on a rectangular route over four streets: King Street, Spadina Avenue, Bloor Street and Sherbourne Street. Belt Line streetcars operated in both directions over this circular route, which had no terminals.