Brunn or Brünn may refer to:
- Places
- Brünn is the German form of the Czech city Brno
- Brunn, Upper Palatinate, a town in Bavaria, Germany
- Brunn, Mecklenburg-Vorpommern, a municipality in Mecklenburg-Vorpommern, Germany
- Brünn, Thuringia, a municipality in Thuringia, Germany
- Brunn am Gebirge, Lower Austria, south of Vienna
- Bad Fischau-Brunn, Lower Austria
- People
- Alain Brunn, a French author and expert in the French moral literature of the XVII century
- Francis Brunn (1923 – 2004), a German-American juggler
- Heinrich Brunn (1822 – 1894), a German archaeologist
- Hermann Brunn, a German mathematician
- Other
- Brunn is the name of a piece in Avalon Hill's Stratego: Legends fantasy game. This piece is only available in the online only expansion set Heihaki's Sprites.
- Brunn (coachbuilder) is an American coachbuilder
