Lwów Voivodeship was an administrative unit of interwar Poland (1918–1939). Because of the Nazi-Soviet invasion of Poland in accordance with the secret Molotov–Ribbentrop Pact, it became occupied by both the Wehrmacht and the Red Army in September 1939. Following the conquest of Poland however, the Polish underground administration existed there until August 1944. Only around half of the Voivodeship was returned to Poland after the war ended. It was split diagonally just east of Przemyśl; with its eastern half, including Lwów itself, ceded to the Ukrainian SSR at the insistence of Joseph Stalin during the Tehran Conference confirmed at the Yalta Conference of 1945.

Tarnopol Voivodeship was an administrative region of interwar Poland (1918–1939), created on 23 December 1920, with an area of 16,500 km2 and provincial capital in Tarnopol. The voivodeship was divided into 17 districts (powiaty). At the end of World War II, at the insistence of Joseph Stalin during the Tehran Conference of 1943 without official Polish representation whatsoever, the borders of Poland were redrawn by the Allies. The Polish population was forcibly resettled after the defeat of Nazi Germany and the Tarnopol Voivodeship was incorporated into the Ukrainian SSR of the Soviet Union. Since 1991, most of the region is located in the Ternopil Oblast in sovereign Ukraine.