| Schmutter | |
| Mouth Coordinates: | 48.7097°N 10.8003°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Germany |
| Subdivision Type2: | State |
| Subdivision Name2: | Bavaria |
The Schmutter is a river in Bavaria, Germany, a right tributary of the Danube.
The Schmutter's source is 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. It flows into the Danube near Donauwörth. Towns along the Schmutter include Fischach, Neusäß, Gablingen and Mertingen.