Waldau may refer to:Waldau (surname) Waldau (Namibia), a farm and train station in the Otjozondjupa region of Namibia Waldau (Bern), a psychiatric clinic in Bern, Switzerland Waldau (Osterfeld), a village in the municipality of Osterfeld, Saxony-Anhalt, Germany Waldau (Kassel), a city quarter of Kassel, Hesse, Germany Waldau (Titisee-Neustadt), a village in Baden-Württemberg, Germany Waldau (Victoria), a suburb of Melbourne, Australia Waldau (Vojvodina), the German name for the village of Sonta, Serbia