Rüstungen is a district of Schimberg in the Eichsfeld district of Thuringia.

Rüstungen is located around 10 kilometers south of Heilbad Heiligenstadt in a valley between the mountain ranges of the Upper Eichsfeld in the northeast, the Misseröder limestone ridge in the southeast and the Gobert in the west. The land is hilly and is mainly used for agriculture, the hills are also forested.