Langenau

Langenau can refer to:

• 

  Langenau (Schopfheim)
  a former municipality, now part of Schopfheim, Germany

• 

  Langenau (Tettau)
  a former municipality, now part of Tettau, Germany

• 

  Langenau (Württemberg)
  a municipality in the Alb-Donau Kreis district, Germany