Tadeusz Zawadzki codename: Zośka, Kajman, Kotwicki, Lech Pomarańczowy, Tadeusz (born January 24, 1921, Warsaw, Poland — died August 20, 1943, Sieczychy, near Wyszków, Poland) was a Polish Scoutmaster (harcmistrz), Polish scouting resistance activist and second lieutenant of the Armia Krajowa during the Second World War. He is a main character in Kamienie na szaniec, a book by Aleksander Kamiński, describing "Operation Arsenal" in Warsaw, as well as Barbara Wachowicz's Rudy, Alek, Zośka. Zawadzki himself commanded the Operation Arsenal, a daring action of the Polish resistance, which took place in Warsaw on March 26, 1943, and which resulted in freeing Zawadzki's former high school classmate, Jan Bytnar.