Wilhelm (Willi) Friedrich Adolf Ritterbusch (3 July 1892, in Werdau, Germany – 10 April 1981, in Skelund, Denmark),[1] was a Nazi Party political functionary.

Among other positions, he was the German Generalkommissar zur Besonderen Verwendung ("Commissioner-General for Special Duties"), directing the political affairs and propaganda in the occupied Netherlands from the middle of July 1943 until 7 May 1945, the end of World War II.

There he was subordinated as Reichskommissar Arthur Seyss-Inquart's Commissioner for the occupied Netherlands' province of North Brabant, to Commissioner-General for Special Duties, Fritz Schmidt.

[3] Following Schmidt's death under uncertain circumstances in June 1943, Heinrich Himmler and Martin Bormann agreed to appoint Ritterbusch as his successor as Commissioner-General for Special Duties for the Netherlands.

[8] During Ritterbusch's time in office as Commissioner-General, the influence of the NSDAP party apparatus in the Netherlands was strongly repressed in favour of an expansion of the SS power base in the occupied country.

At a meeting held in The Hague on 30 July 1943, shortly after Ritterbusch's appointment, he was informed by Seyss-Inquart that unconditional loyalty to the SS leadership was a requirement of his future work.

However, he rejected the idea of Ritterbusch being appointed head of the NSDAP's main archive as proposed by his co-worker Walkenhorst, who characterized him as a "kind of party philosopher".