Jerzy Czeszejko-Sochacki (Nizhyn - Moscow) was a socialist, later communist politician in Poland and an early victim of Stalinist repression.
He joined the Polish Socialist Party in 1914, and the Communist Party of Poland (KPP) in 1921.
From 1921-33 he was a member and alternate member of the KPP Central Committee, and from 1929-33 sat on its politburo. A member of the Polish Parliament (Sejm). KPP representative to the Communist International executive from 1930 and a deputy member of its Presidium from 1931.
He was arrested in Moscow on 15 August 1933. He committed suicide on 4 September 1933, according to one version by jumping from a bridge over the prison courtyard, and according to another by jumping from the window of the room where he was being interrogated and tortured. He left a note, written in his own blood, proclaiming his innocence and undying loyalty to the communist party.