Gomadingen is a town located in the district of Reutlingen within the state of Baden-Württemberg, Germany. The municipality is characterized by its geography, with approximately 85% of its territory situated on the Swabian Alps.
The town is notable for being the location of Grafeneck Castle. During World War II, this castle served as the site of the Grafeneck Euthanasia Centre, which was one of the primary killing centers used by Nazi Germany as part of the Action T4 program.