Aa River may refer to:

• Aa River (France), in northern France
• Aa River (Meuse), in North Brabant, Netherlands
• Drentse Aa, a river in Groningen, Netherlands
• Aabach (Greifensee), or Ustermer Aa, a river in Switzerland
• Aabach (Afte), formerly called the Große Aa, a river in Germany
• Aa, a river in Antwerp, Belgium which joins the Nete River

This disambiguation page lists articles about distinct geographical locations with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article.