Kleine Aa

Kleine Aa may refer to:


 * Chli Aa (Schwyz), a river in canton of Schwyz, Switzerland
 * Chli Aa (Sempachersee), a tributary of Lake Sempach in the canton of Lucerne, Switzerland
 * Kleine Aa (Aabach), a tributary of the Aabach in North Rhine-Westphalia, Germany
 * Kleine Aa (Someren), headwater stream of the Aa (Meuse) in the province of North Brabant, Netherlands