Bolesław Yuri II of Mazovia (Polish Bolesław Jerzy II Mazowiecki, also known as "of Galicia", Boleslaw-Jerzy II, and Yuri-Bolesław Trojdenowicz, 1305/1310 – April 7, 1340) is a ruler of the Polish Piast dynasty who reigns in the originally Ruthenian principality of Galicia.
After his death begin the Galicia–Volhynia Wars over succession of Galicia and Volhynia.