Graswiesenbach is a small river of Hesse, Germany.

It originates in the Vogelsberg mountain at an altitude of about 713 m above sea level just north of the Rudingshainer Flösser.

At this stage the river is at an altitude of about 423 m above sea level.

4.0 km long and ends about 290 altitude meters below its origin, thus it has an average bottom slope of about 73 ‰.

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