Avraham Stern, Polish Zionist leader (d. 1942)
Avraham Stern (Hebrew: אברהם שטרן, Avraham Shtern), alias Yair (Hebrew: יאיר; December 23, 1907 – February 12, 1942) was one of the leaders of the Jewish paramilitary organization Irgun. In September 1940, he founded a breakaway militant Zionist group named Lehi, called the "Stern Gang" by the British authorities and by the mainstream in the Yishuv Jewish establishment.