Generalbezirk Litauen (Lithuanian: Lietuvos generalinė sritis, lit. 'General District Lithuania') was an administrative subdivision of the Reichskommissariat Ostland of Nazi Germany that covered Lithuania from 1941 to 1944. It served as the Nazi civilian administration for the German occupation of Lithuania during World War II.
Adrian von Renteln was the only Generalkommissar of Generalbezirk Litauen during its existence.
The Reichskommissariat Ostland (RKO; lit. 'Reich Commissariat of Eastland') was an administrative entity of the Reich Ministry for the Occupied Eastern Territories of Nazi Germany from 1941 to 1945. It served as the German civilian occupation regime in Lithuania, Latvia, Estonia, and the western part of the Byelorussian SSR during the Eastern Front of World War II.
Ostland was established after the success of the Wehrmacht's Baltic operation and an initial period of military administration by Army Group North Rear Area based on the equivalent Reichskommissariat Baltenland in German planning documents. It was divided into Generalbezirk Estland (Estonia), Generalbezirk Lettland (Latvia), Generalbezirk Litauen (Lithuania), and Generalbezirk Weißruthenien (Belarus) each with its own Nazi collaborationist government and Auxiliary Police under the control of a German Generalkommissar. Hinrich Lohse served as the Reichskommissar from 1941 to 1944 and Erich Koch from 1944 to 1945.
The Holocaust resulted in the near total eradication of Lithuanian (Litvaks) and Polish Jews in Generalbezirk Litauen of the Reichskommissariat Ostland in the Nazi-controlled Lithuania. Of approximately 208,000–210,000 Jews at the time of the Nazi invasion, an estimated 190,000 to 195,000 were killed before the end of World War II, most of them between June and December 1941. This genocide would also mark the beginning of Hitler's Final Solution. More than 95% of Lithuania's Jewish population was murdered over the three-year German occupation, a more complete destruction than befell any other country in the Holocaust. Historians attribute this to the massive collaboration in the genocide by the non-Jewish local paramilitaries, though the reasons for this collaboration are still debated. The Holocaust resulted in the largest loss of life in so short a period of time in the history of Lithuania.
The events in the western regions of the USSR occupied by Nazi Germany in the first weeks after the German invasion, including Lithuania, marked a sharp intensification of the Holocaust.