Mark Zborowski (January 27, 1908 – April 30, 1990) (AKA "Marc" Zborowski) was an anthropologist and an NKVD agent (Venona codenames TULIP and KANT). He was the NKVD's most valuable mole inside the Trotskyist organization in Paris during the 1930s and in New York during the 1940s.
Zborowski was one of four children born into a Jewish family in Uman, near Cherkasy, in 1908. According to the story Zborowski told friends, his conservative parents moved to Poland in 1921 to escape the October Revolution in Russia. While he was a student, Zborowski disobeyed his parents and joined the Polish Communist Party. His political activity led to imprisonment and he fled to Berlin where he was unsuccessful in finding employment. He moved to France and attended the University of Grenoble, studying anthropology and working as a waiter.
In 1933 the penniless Zborowski turned up in Paris with his wife and was recruited as an NKVD agent by the Leningrad émigré Alexander Adler. He provided the NKVD with a written background and revealed that his sister and two brothers lived in the Soviet Union. According to historian John J. Dziak, the NKVD had recruited him into a special group who murdered special enemies of Joseph Stalin. Those assassinated included Ignace Reiss (1937), Andrés Nin (1937), and Walter Krivitsky (1941). Members of the group are said to have included Leonid Eitingon, Nikolai Vasilyevich Skoblin, Sergei Efron, and David Alfaro Siqueiros, and perhaps the psychoanalyst Max Eitingon.