The Rödelbachgraben, usually called the Rödelbach and also incorrectly referred to as the Rieschengraben, is a river of Saxony-Anhalt, Germany.

The first documented mention in the Straßberg land register in 1610 records the structure as oberer Rödelbachgraben mit Dorfrösche, the name changed from Röschengraben to Rödelbach.

Here part of the water flowed around the silting up zone where it was united with another headwater, probably a natural stream.

From the outlet of the Maliniusteich the water flows along the Straßberger Mühlengraben into the River Selke.

Below the Maliniusteich there exist in place long disused tributaries from collection ditches (Sammelgräben).