Marlborough Road is a disused London Underground station in St John's Wood, northwest London NW8, England. It opened in April 1868 on the Metropolitan & St. John's Wood Railway, the first northward extension from Baker Street of the Metropolitan Railway (now the Metropolitan line). It is located at the junction of Finchley Road and Queen's Grove.
thumb|left|Site of the old platforms at Marlborough Road
In the mid-1930s, the Metropolitan line was suffering congestion at the south end of its main route, where trains from its many branches shared the limited capacity between Finchley Road and Baker Street. To ease this congestion, new deep-level tunnels were constructed between Finchley Road and the Bakerloo line tunnels at Baker Street; then, commencing on 20 November 1939,
Shots of the remains of the platforms, and an outside shot of the station building and booking hall—which at the time was in use as a steak restaurant—were included in Metro-Land, a 1973 documentary presented by John Betjeman. The building housed a Chinese restaurant until 2009 and now contains a substation installed as part of the power upgrade programme to support the introduction of S stock on the Metropolitan line.