The Ahlsburg is a range of bunter sandstone hills, relatively small in area and up to 411.4 m above sea level (NN),[1] in the southern part of Lower Saxony, Germany.

It lies within the Solling foreland and is part of the Weser-Leine Uplands.

They are heavily wooded and belong to the Leine Uplands.

They are located in the district of Northeim southeast of Dassel, east of the Solling, south of Einbeck and the valley of the Ilme, west of Northeim and the Leine valley and north of Moringen and northeast of Fredelsloh.

The Ahlsburg is grouped within the following natural regions:[3] The following hills and elevations belong to the Ahlsburg ridge – with their heights in metres above sea level (Normalnull or NN): The following streams flow in and around the Ahlsburg (all in the catchment area of the Leine): Places of interest in and on the Ahlsburg ridge – with heights in metres above sea level ( NN) - include: