Josiah Ellis DuBois Jr. (October 21, 1912 – August 1, 1983) was an American attorney at the U.S. Treasury Department who played a major role in exposing State Department obstruction efforts to provide American visas to Jews trying to escape Nazi Europe. In 1944, he wrote the Report to the Secretary on the Acquiescence of This Government in the Murder of the Jews, which led to the creation of the War Refugee Board. After the war, he was a prosecutor at the Nuremberg Trials prosecuting Nazi war crimes, particularly in the prosecution of holocaust chemical manufacturer I.G. Farben.