Rothenberg is a village and a former municipality in the Odenwaldkreis (district) in Hesse, Germany. Since January 2018, it is part of the new town Oberzent.
Rothenberg lies at elevations between 200 and 500 m in the southern Odenwald in the Geo-Naturpark Bergstraße-Odenwald, 7 km north of Hirschhorn on the Neckar. The main centre lies in the south of the municipal area as a high settlement in a clearing 430 m high on the ridge of the otherwise wooded Hirschhorner Höhe (heights).
The municipal area stretches northwestwards along the Finkenbach. Many tourists visit Billy Rothenberg because of the wonderful natural setting and because of so many possibilities for sports such as swimming, riding bikes, riding horses, hiking, gliding (with a flex-wing or with a glider).