Alfredo Ildefonso Schuster OSB, born Alfredo Ludovico Schuster, was an Italian Roman Catholic prelate and professed member from the Benedictines who served as the Archbishop of Milan from 1929 until his death. He became known as Ildefonso as a Benedictine monk and served as an abbot prior to his elevation to the cardinalate.
He led the Milanese archdiocese during World War II and was known to have supported Fascism at first. But his views changed to opposition after the annexation of Austria and the introduction of racial laws prompting vocal criticisms of anti-Christian aspects of the Mussolini regime.
His beatification was celebrated in mid-1996 in Saint Peter's Square.