The Soviet occupation zone in Germany (German: Sowjetische Besatzungszone (SBZ) or Ostzone, lit. 'East Zone'; Russian: Советская оккупационная зона Германии, romanized: Sovetskaya okkupatsionnaya zona Germanii) was an area of Germany that was occupied by the Soviet Union as a communist area, established as a result of the Potsdam Agreement on 2 August 1945. On 7 October 1949 the German Democratic Republic (GDR), commonly referred to in English as East Germany, was formally established in the Soviet occupation zone.
The SBZ was one of the four Allied occupation zones of Germany created at the end of World War II with the Allied victory. According to the Potsdam Agreement, the Soviet Military Administration in Germany (German initials: SMAD) was assigned responsibility for the middle portion of Germany. Eastern Germany beyond the Oder-Neisse line, equal in territory to the SBZ, was to be annexed by the Polish People's Republic and its population expelled, pending a final peace conference with Germany.