Ostenberg
Ostenberg is the name of the following geographical objects:
- Ostenberg (Bestwig) , 566 m high mountain south of the Ruhr near Bestwig and north of the Rothaargebirge with a nature reserve of the same name, North Rhine-Westphalia
- Ostenberg (Iserlohner Höhe) , 501 m high mountain of the Iserlohner Höhe , North Rhine-Westphalia
- Ostenberg (Seven Mountains) , 360 m high mountain of the Seven Mountains , Lower Saxony
- Ostenberg (Stemweder Berg) , 127 m high summit of the Stemweder Berg , North Rhine-Westphalia