The Berlin-Warszawa-Express (BWE) is a cross-border train service that connects Berlin and Warsaw via Frankfurt (Oder), operated jointly by Deutsche Bahn (DB Fernverkehr) and Polish State Railways (PKP Intercity).

The Berlin-Warszawa-Express brand began in 2002, replacing the names of individual services which had been added to the EuroCity network over the previous decade.

This additional service was dropped in 2004, but restored in 2007, and since 2012, continues from Poznań to Gdańsk and Gdynia, under the name Berlin-Gdynia Express.

Since December 2010 the train has been hauled by Siemens EuroSprinter (ES 64) locomotives, provided by PKP and known in Poland as Class EU 44 Husarz.

Plans for the Polish Y High Speed Line include a route from Poznan to Warsaw, which follows the Berlin-Warszawa Express.