Ealing Common is a London Underground station on the Uxbridge branch of the Piccadilly line and on the Ealing Broadway branch of the District line. Eastbound, the next station is Acton Town; westbound, the next station is North Ealing on the Piccadilly line and Ealing Broadway on the District line. Here, the District and Piccadilly lines share the same pair of tracks through the station the only other example where a deep level line and a sub surface line share the same pair of tracks is further up the Uxbridge branch, where the Piccadilly line shares tracks with the Metropolitan line from Rayners Lane to Uxbridge. It is the only station west of Acton Town to be served by both the Piccadilly and District lines.