Schaler Aa is a river of Lower Saxony and North Rhine-Westphalia, Germany.

The river springs as Weeser Aa southeast of the Ankum Heights and east of Merzen in Lower Saxony.

[2] After crossing the boundary between Lower Saxony and North Rhine-Westphalia, it changes it name into Halverder Aa[3] and near Halverde [ar; de] (a district of Hopsten) into Halverder-Schaler Aa.

[4] Near Schale [ar; de] (a district of Hopsten), it changes its name again into Schaler Aa.

This article related to a river in North Rhine-Westphalia is a stub.