Tadeusz Leon Józef Zawadzki, assumed surname: Tadeusz Zielinski, alias "Kajman", "Kotwicki", "Lech Pomaranczowy", "Tadeusz", "Zoska" (born on January 24, 1921 in Warsaw, died on August 20, 1943, in Sieczychy) – scout instructor, scoutmaster, Home Army second lieutenant, commander of assault groups in Warsaw, one of the protagonists of Aleksander Kaminski's book Kamienie na szaniec.