Sydenham railway station serves the suburb of Sydenham in the London Borough of Lewisham. It is slightly to the north of Sydenham junction, which is a junction between the main line from London Bridge to Brighton and the line to Crystal Palace.
The station is operated by London Overground, with London Overground and Southern trains serving the station. First Capital Connect and some Southern services pass through the station. It is located in Travelcard Zone 3. The station is situated on Sydenham Road (A212)/Sydenham Station Approach. It has two platforms, each of which have shelters. Four tracks run through the station. The station layout is unusual in that the two platforms only partly face each other, and are partly staggered on either side of the footbridge.
Sydenham station has three entrances. The main entrance has a ticket office, ticket barriers, two ticket machines and two office windows, and is located on platform 2. The second entrance, also on platform 2, is only open when the ticket office is closed and the third entrance is on platform 1 and was upgraded from a 'back gate' to a shelter with an information screen, a ticket machine, two help points, and ticket barriers in late 2009, thus giving step free access to both platforms.