Ballspielverein Borussia 09 e. V. Dortmund, often known simply as Borussia Dortmund or by its initialism BVB, is a German professional sports club based in Dortmund, North Rhine-Westphalia.
- Location: Dortmund, Germany
- Arena/Stadium: Signal Iduna Park
- Nickname: BVB
- Founded: 19 December 1909, Dortmund, Germany
