The Orensberg, also known in the region as the Orensfels(en) due to the striking rock formations on its summit plateau, is a hill, 581.2 m above sea level (NHN),[1] near Frankweiler in the county of Südliche Weinstraße in the German state of Rhineland-Palatinate.

The hill is part of the Haardt mountain range that forms the eastern edge of the Palatinate Forest.

Early scientific assessments indicated it might be of Celtic origin and it was dated to the period around 500 B. C.[7] In the meantime, it has been shown that it is actually the remains of a Carolingian refuge castle,[8] which was built in the 8th century A.D.[9][10] This evidence came from a dendrochronological investigation of a piece of an excavated wooden beam.

This type of feature is common in the Palatine Forest and is locally called a Wasserstein ("water rock") or Suppenschüssel ("soup bowl").

The summit plateau, whose highest point is protected by railings, offers a good all-round view of the Palatine Forest and the Upper Rhine Plain to the south.