The Free On-line Dictionary of Computing (19 January 2023):

GMD
German National Research Center for Computer Science

    A former German research centre.

   Full name: "GMD - Forschungszentrum Informationstechnik GmbH"
   (German National Research Center for Information Technology).

   Before April 1995, GMD stood for "Gesellschaft für Mathematik
   und Datenverarbeitung" - National Research Center for Computer
   Science, it is retained for historical reasons.

   In 2000-2001 GMD was integrated into the FhG (Fraunhofer
   Society for the Advancement of Applied Research).

   The gmd.de website says (in German):

   "GMD (Forschungszentrum Informationstechnik GmbH, before March
   1995: Gesellschaft für Mathematik und Datenverarbeitung mbH)
   no longer exists!"

   Address: PO Box 1316, D-53731 Sankt Augustin 1, Germany

   (1995-04-10)