Dennhausen is a village in Fuldabrück in the Kassel district of Hessen.

The village lies in a loop of the Fulda at the Söhre.

The village center is called "Dalles", the place in the intersection of the Haupt and Dörnhagener Straße.

Dennhausen was mentioned for the first time in 1253 as Tenhusen.

The village owned Kloster Breitenau (today Guxhagen) since 1253 and a third of the fishing.