Polesie Voivodeship () was an administrative unit of interwar Poland (1918–1939), named after the historical region of Polesia. It was created by the Council of Ministers of the Second Polish Republic on February 19, 1921, as a result of peace agreement signed with the Russian and Ukrainian SSRs in Riga. Polesie Voivodeship was the largest province of interwar Poland. It ceased to function in September 1939, following the Nazi-German and Soviet invasion of Poland in accordance with a secret protocol of the Nazi–Soviet Pact of aggression.