Claestorp Castle, Manor house in Katrineholm Municipality, Sweden.

Claestorp Castle is a manor house in Katrineholm Municipality surrounded by extensive forests, meadows, and lakes. The main building sits within a large estate that continues to operate various enterprises today.

The estate's first documented mention appears in 1434, though the current manor was built in 1754 following specific architectural plans. This construction shaped the property's physical form that visitors see today.

The Lewenhaupt family has maintained continuous ownership of the estate since 1776, preserving its architectural and historical elements through generations.

Access to the estate should be arranged beforehand since it remains private property with ongoing operations. Visiting during good weather allows you to explore the surrounding forests and lakes comfortably.

The estate is still owned by the Lewenhaupt family, and since 1776 it has been a fideikommiss, an entailed estate passed down within the family. The last holder of the entail was Count Claes Lewenhaupt (1880–1965), after which Claestorps Fideikommiss AB was formed. The castle should not be confused with Klagstorps herrgård in Skövde Municipality, which was also once called Claestorp.