Long Branch Loop is the westernmost streetcar stop within the Toronto streetcar system, operated by the Toronto Transit Commission (TTC). It is located in the Long Branch neighbourhood in southwestern Toronto, close to the boundary with Mississauga. Long Branch Loop is the western terminus for four streetcar routes but is principally served by the 507 Long Branch route. Several TTC and MiWay bus routes terminate at the loop.

The Toronto streetcar system is a network of eleven streetcar routes in Toronto, Ontario, Canada, operated by the Toronto Transit Commission (TTC). It is the third busiest light-rail system in North America. The network is concentrated primarily in Downtown Toronto and in proximity to the city's waterfront. Much of the streetcar route network dates from the 19th century. Three streetcar routes operate in their own right-of-way, one in a partial right-of-way, and six operate on street trackage shared with vehicular traffic with streetcars stopping on demand at frequent stops like buses. Since 2019, the network has used low-floor streetcars, making it fully accessible.