The Dörenberg is a hill, 331.2 m above sea level (NN), in the Teutoburg Forest in the district of Osnabrück, in the German state of Lower Saxony.

Dören could be derived, especially in the area of Ostwestfalen-Lippe, from Dör, the Low German word for a hill or mountain pass.

The Dörenberg, the highest elevation in the centre section of the Teutoburg Forest, lies between Bad Iburg and the Georgsmarienhütte village of Oesede, whereby the boundary of both parishes runs over its southern flank, close to the summit.

On the summit of the Dörenberg stands the Hermann's Tower, from which, at a height of 352 m above NN, there are views southeast over the Teutoburg Forest, southwards of the Münsterland and north to the Wiehen Hills.

A memorial stone has been laid on the Zigzag Way (Zickzackweg) that runs from the Karlsplatz west of the summit towards the Benno Quarry.