South Dock was a railway station on the Isle of Dogs in east London.

Station was staffed entirely by dock employees, company issued its own tickets.

It stood in a relatively isolated location in the docks area, some distance from the nearest road.

Extensive rebuilding in the 1980s Docklands redevelopment has left no trace of the station or the line (the Docklands Light Railway reuses much of the LBR's route but runs further to the west in this area to serve Canary Wharf).

As of 2021, it is occupied by the 20 Water Street building, part of the Wood Wharf development.