Biuletyn Informacyjny ("Information Bulletin") was a Polish underground weekly published covertly in General Government territory of occupied Poland during World War II. The magazine was edited by Aleksander Kamiński and distributed as the main organ of ZWZ-AK headquarters in Warsaw, initially in order to inform the AK soldier about ongoing resistance activities. By 1944 Biuletyn Informacyjny had a circulation of 42,000-43,000 copies. The publishers recommended readers to have the articles reprinted in provincial underground publications throughout Poland.