Berlin-Wannsee station (in German Bahnhof Berlin-Wannsee) is a railway station opened in 1874 which lies in the Wannsee district of Berlin, the capital city of Germany. It is an important traffic junction in south-west Berlin that is served by the RegionalExpress and RegionalBahn trains of the Deutsche Bahn, the Harz-Berlin-Express of Veolia Verkehr and by the Berlin S-Bahn. In summer, Wannsee serves as the Berlin terminal for DB AutoZug car carrying trains to and from southern Europe.

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On 13 August 1961, with the construction of Berlin Wall, S-Bahn traffic from Stahnsdorf and Potsdam was discontinued. The only occurrence is that there is only Potsdam-Griebnitzsee shuttle until it was discontinued in 1962. Residents commuted only to East Berlin via the longer Berlin outer ring from Potsdam through regional express trains, and the only trains running on the Berlin–Magdeburg railway was transit traffic from the West Berlin via the GDR to West Germany and other countries.

Later on, after the fall of the Berlin Wall, the line was re-connected to Potsdam again. Reconstruction began in April 1991 and was completed on 1 April 1992. Between the fall of Berlin Wall and 1 April 1992, Potsdam was connected through the fastest way via Griebnitzsee to interchange at Wannsee, besides transit traffic. S1 was temporarily extended from Wannsee to Potsdam Stadt from 2003 to 2006.

S-Bahn line S1 terminates at Wannsee, and operates to and from central Berlin via the Nord-Süd-Tunnel. Line S7 passes through Wannsee on its route to Potsdam Hbf, and operates to and from central Berlin via the Stadtbahn. The two routes to central Berlin diverge by way a flying junction between Wannsee and Nikolassee stations.

The station entrance building lies to the north of the station, and is linked to the platforms by a subway. To the south of the entrance are two island platforms used by the S-Bahn services, and then a single longer island platform used by Deutsche Bahn and Veolia trains. The AutoZug terminal is to the south of the station.

The station is served by the following services:

Line	Route		Interval
ICE 48	Berlin-Ostbahnhof – Berlin – Wannsee – Brandenburg – Hannover – Gütersloh – Essen – Köln – Frankfurt Airport – Heidelberg – Stuttgart – Augsburg – München		One train pair
IC 56	Cottbus – Lübben – Berlin Ostbahnhof –	Berlin – Wannsee – Brandenburg – Magdeburg (– Hannover – Bremen – Oldenburg – Emden – Emden Außenhafen/Norddeich Mole)	Two train pairs
	Rostock – Neustrelitz – Oranienburg –

Line	Route	Interval
RE 1	Magdeburg – Brandenburg – Potsdam – Wannsee – Berlin Hbf – Berlin Ostbahnhof – Erkner – Fürstenwalde (Spree) – Frankfurt (Oder) (– Cottbus)	30 min
RE 7	Dessau – Bad Belzig – Michendorf – Wannsee – Berlin Hbf – Berlin Ostbahnhof – Königs Wusterhausen – Lübben (Spreewald) – Senftenberg
RB 23	Golm – Potsdam – Potsdam Griebnitzsee – Wannsee – Berlin Alexanderplatz – Berlin Ostbahnhof – Berlin Ostkreuz – BER Airport	60 min
RB 37	Wannsee – Potsdam Medienstadt Babelsberg – Potsdam-Rehbrücke – Wilhelmshorst – Michendorf – Beelitz Stadt
HBX	Harz-Berlin-Express Berlin Ostbahnhof – Berlin Hbf – Berlin Wannsee – Potsdam – Magdeburg – Halberstadt (train split) – Quedlinburg – Thale / Wernigerode – Goslar	Individual services Sa + Su

Line	Route	Interval
S1	Wannsee – Steglitz – Schöneberg – Potsdamer Platz – Friedrichstraße – Gesundbrunnen – Wittenau – Oranienburg	10 min
S7	Potsdam – Wannsee – Westkreuz – Hauptbahnhof – Alexanderplatz – Ostbahnhof – Lichtenberg – Ahrensfelde

The station is served by a number of bus routes which stop at a bus interchange in front of the station. These include Berlin routes 114 (to Krankenhaus Heckeshorn), 118 (to Rathaus Zehlendorf and Steinstücken), 218 (to Theodor-Heuss-Platz U-Bahn station and the Pfaueninsel), 316 (to the Glienicker Brücke in Potsdam) and 318 (to the Hahn-Meitner-Institut). Additionally Havelbus route 620 operates to Teltow.

Berlin ferry line F10 departs from a terminal some 200 metres (660 ft) from the station entrance, providing a crossing to Alt-Kladow on the other side of the Großer Wannsee lake.

• Station information (in German)