Union of Polish Patriots (Society of Polish Patriots, Polish: Związek Patriotów Polskich, ZPP, Russian: Союз Польских Патриотов, СПП) was a political body created by Polish communists and Joseph Stalin in Soviet Union in 1943. This body, unofficially controlled and directed by Stalin, became a foundation of the Communist government created by the Soviets that eventually took power in the People's Republic of Poland.
ZPP was dominated by Communists (from January 1944 members of the political party of Centralne Biuro Komunistów Polskich (Central Bureau of Polish Communists).
The decision to create ZPP was made by Stalin in March 1943, although the organization was formally created in June 1943. ZPP's significance increased after Soviet Union broke relations with the Polish government-in-exile in April 1943, following the discovery of the Katyn Massacre. In May 1943 ZPP was involved in the creation of the first division (1 Dywizja Piechoty im. Tadeusza Kościuszki) of the Ludowe Wojsko Polskie (which would later merge with the underground forces in Poland established by Soviet Union, known as Armia Ludowa) under general Zygmunt Berling. In June 1943 ZPP was officially created and Directorate ('Zarząd') of the ZPP was 'elected' in the form of president Wanda Wasilewska, with members Stanisław Skrzeszewski, Stefan Jędrychowski, Włodzimierz Sokorski and Zygmunt Berling. ZPP also issued a declaration condemning the Polish government-in-exile led by Władysław Sikorski as a body whose actions were damaging the "Anglo-Russo-American block".