Otzberg is a municipality in the district of Darmstadt-Dieburg, located in the Odenwald forest region of Germany. It was founded in 1972 by the merger of six former independent municipalities.
Otzberg consists of seven villages: Habitzheim, Hering, Lengfeld with Zipfen, Nieder-Klingen, Ober-Klingen and Ober-Nauses, and Schloss-Nauses.
One place of interest in Otzberg is its eponymous castle, a medieval fortress that was first mentioned in 1231. It is widely known for its white tower. The castle itself has been slowly reconstructed to resemble its medieval appearance.