Karstadt Warenhaus GmbH, headquartered in Essen, is a German department store chain. The two companies GALERIA Kaufhof GmbH and Karstadt Warenhaus GmbH have been working closely together since November 2018. From March 2019, Karstadt and Kaufhof operated under the joint name GALERIA Karstadt Kaufhof.

In January 2020, the two companies were merged into one company. When the merger became effective, all rights and obligations of GALERIA Kaufhof GmbH were transferred to Karstadt Warenhaus GmbH, now trading as GALERIA Karstadt Kaufhof GmbH, in accordance with § 20 UmwG.