Ballspielverein Borussia 09 e. V. Dortmund, commonly known as Borussia Dortmund, BVB, or simply Dortmund, is a German professional sports club based in Dortmund, North Rhine-Westphalia. It is best known for its men's professional football team, which plays in the Bundesliga, the top tier of the German football league system. The club have won eight league championships, five DFB-Pokals, one UEFA Champions League, one Intercontinental Cup, and one UEFA Cup Winners' Cup.
Borussia Dortmund's colours are black and yellow, giving the club its nickname die Schwarzgelben. They hold a long-standing rivalry with Ruhr neighbours Schalke 04, with whom they contest the Revierderby. They also contest Der Klassiker with Bayern Munich.