The Schmutter is a river in Bavaria, Germany, a right tributary of the Danube.

The Schmutter's source is 6 km (3.7 mi) southwest of Schwabmünchen, in the Swabia region of Bavaria.

The Schmutter flows north, and for several tens of kilometers it flows parallel to the Lech, at only a few km west of the Lech.

Towns along the Schmutter include Fischach, Neusäß, Gablingen and Mertingen.

This article related to a river in Bavaria is a stub.