Southgate tube station is a London Underground Piccadilly Line tube station in Southgate, London, England.

It is regarded as a fine example of the architect, Charles Holden, and was opened on 19 September 1932.

The station is circular in shape, and was built as a bus/tube station complex, with an arcade of shops surrounding it. It has no parking.

Retaining much of its original decoration, the two escalators have the original round 1930s lighting, while bronze panelling is in evidence throughout the station. Like Arnos Grove, Oakwood and Cockfosters, it is a Grade II listed building. However, the station is not without change: in the late 1990s, one of the four entrances was filled in to be used as a new ticket office.

In the early 1980s, moving picture advertising was tested in the tunnels south of the station. The pictures were of a child on a beach turning to face the camera.

Southgate has unusual tube platforms, being entirely in tunnel, but with the ends of the tunnel visible when looking northwards.

It is around 38 minutes from Leicester Square.