The Aura is a 13.3 kilometres (8.3 mi) tributary of the Sinn River in Bavaria, Germany.

The name Aura originates from the Old High German Uraha. The word ur meant Aurochs, and the word aha meant stream, meaning it was a river where Aurochs lived. The river gives the Gemeinde Aura im Sinngrund its name.

The river originates in the Forst Aura [de] in a valley near Aura im Sinngrund and flows in a southerly direction. In Fellen, it meets its largest tributary, the Fellach. At its mouth, the Aura then turns to the east. The mouth of the river is in Burgsinn, where it flows into the Flutgraben, an anabranch of the Sinn

• List of rivers of Bavaria