Klosterbach may refer to:
Klosterbach (Große Aue), a river of North Rhine-Westphalia, Germany, tributary of the Große Aue Klosterbach (Schwarzbach), a river of North Rhine-Westphalia, Germany, tributary of the Schwarzbach Klosterbach (Varreler Bäke), a river of Lower Saxony, Germany, tributary of the Ochtum Klosterbach (Danube), a river of Bavaria, Germany, tributary of the Danube