Aschau may refer to:

in Germany: Aschau am Inn, a municipality in the district of Mühldorf, Bavaria Aschau im Chiemgau, a municipality in the district of Rosenheim, Bavaria Aschau im Chiemgau station, a railway station Aschau (Lachte), a river of Lower Saxony in Austria: Aschau im Zillertal, a municipality in Tyrol