Edgar Edouard Bernard Sengier (9 October 1879 – 26 July 1963) was a Belgian mining engineer and director of the Union Minière du Haut Katanga mining company that operated in Belgian Congo during World War II. Sengier is credited with giving the American government access to much of the uranium necessary for the Manhattan Project, much of which was already stored in a Staten Island warehouse due to his foresight to stockpile the ore to prevent it from falling into a possible enemy's hands.