Schloss Ahrensburg is a former Herrenhaus (mansion) and is today referred to as a Schloss. It is located in Ahrensburg in southern Schleswig-Holstein, Germany, not far from the city of Hamburg.

Ahrensburg is a town in the district of Stormarn, Schleswig-Holstein, Germany. It is located northeast of Hamburg and is part of the Hamburg Metropolitan Region. Its population is around 31,000. Schloss Ahrensburg, the town's symbol, is a Renaissance castle dating from 1595.