SS-Gruppenführer Eggert Reeder (22 July 1894, Poppenbüll – 22 November 1959, Wuppertal) was a German jurist, civil servant, and district president of several regions.

After Ward Hermans and René Lagrou had left the Flemish National Union (VNV) to form the Algemeene-SS Vlaanderen,[1] its leader, Staf de Clercq, immediately chose to collaborate as well, despite prewar statements to the contrary.

As a result, Reeder's first official business in Düsseldorf was to appoint Vice President William Burandt as his interim-successor, but retained his position in Cologne.

In the meantime, Sicherheitsdienst (SD) Chief Reinhard Heydrich communicated directly to Reeder that de Foy was to remain in position and untouched.

Although co-operative with them, de Foy had both his department and powers cut from then on, and it was not until after the Allied invasion of France and the oncoming collapse of Nazi control that the status quo was disrupted.

Arriving in Brussels on 14 August 1940, De Foy resumed his duties, but the State Security Service had been abolished, and the activities of his residual department were now limited to the policing of aliens.

That was in part aided by the fact that from July to September 1944, Reeder was appointed Deputy of the new Imperial Commissioner for occupied Belgium and northern France, the former Cologne and Aachen Gauleiter Josef Grohé (1902–1987).

Part of this was the non-enforcement of the Reich Security Main Office order for all Jews to be marked by wearing a yellow Star of David at all times, until Helmut Knochen's conference in Paris on 14 March 1942.

2,250 of these unemployed Belgian Jews were sent to forced labour camps in Northern France (still under Reeder's control), in order to build the Atlantic Wall for Organisation Todt.

Soon afterwards, Reeder ordered their release at the direct request of Queen Elisabeth of Bavaria and Cardinal Jozef-Ernest van Roey, and the attempt was not repeated.

After the Allied Forces invasion of Normandy in June, the Nazis relieved de Foy of his position, in part driven by the rumours that he was "London's man," having made contact according to post-War records with the Belgian Resistance via both Walter Ganshof van der Meersch and William Ugeux.