Franz Walter Stahlecker (10 October 1900 – 23 March 1942) was Commander of the Sicherheitspolizei (Sipo) and the Sicherheitsdienst (SD) (; BdS) for the Reichskommissariat Ostland in 1941–42. Stahlecker commanded Einsatzgruppe A, the most murderous of the four Einsatzgruppen (death squads during the Holocaust) active in German-occupied Eastern Europe.