The Berliner Verkehrsbetriebe is the main public transport company of Berlin, the capital city of Germany. It manages the city's U-Bahn (underground), tram, bus and ferry networks, but not the S-Bahn urban rail system.

The Berlin U-Bahn is a rapid transit system in Berlin, the capital and largest city of Germany, and a major part of the city's public transport system. Together with the S-Bahn, a network of suburban train lines, and a tram network that operates mostly in the eastern parts of the city, it serves as the main means of transport in the capital.