The Rot is a southern tributary of the river Danube in the region of Upper Swabia in Baden-Württemberg in Germany.

The Rot runs in a northerly direction parallel to the river Iller to the east, and Westernach to the west.

The Rot meanders north through its increasingly widening valley, the heights of which are covered by woods, whereas the river itself is embedded first by moorland and wet meadows, later by fields.

North of Dellmensingen most of the waters of the Rot flow through an artificially created channel into the reservoir of a hydroelectric plant near Donaustetten.

The remaining waters of the Rot keep flowing in its original stream bed to empty into the Danube north of Donaustetten.