Alfred Delp, S.J. (Mannheim, Grand Duchy of Baden, 15 September 1907 – Berlin, 2 February 1945), was a German Jesuit priest and philosopher of the German Resistance. A member of the inner Kreisau Circle resistance group, he is considered a significant figure in Catholic resistance to Nazism. Falsely implicated in the failed 1944 July Plot to overthrow Adolf Hitler, Delp was arrested, and sentenced to death. He was executed in 1945.
Alfred Delp was born in Mannheim, Grand Duchy of Baden, to a Catholic mother and a Protestant father. Although he was baptised as a Catholic, he attended a Protestant elementary school and was confirmed in the Lutheran church in 1921. Following a bitter argument with the Lutheran pastor, he requested and received the sacraments of First Communion and Confirmation in the Catholic Church. His Catholic pastor recognized the boy's intelligence and love for learning and arranged for him to study at the Goetheschule in Dieburg. Possibly because of the dual upbringing, he became later an ardent proponent of radically better relations between the Churches.
Thereafter, Delp's youth was moulded mainly by the Bund Neudeutschland Catholic youth movement. Immediately after passing his Abitur – in which he came out on top of his class – he joined the Society of Jesus in 1926. Following philosophy studies at Pullach, he worked for 3 years as a prefect and sports teacher at Stella Matutina Kolleg in Feldkirch, Austria, where in 1933, he first experienced the Nazi regime, which forced an exodus of virtually all German students from Austria and thus the Stella Matutina by means of a punitive 1000 Mark fine to be paid by anyone entering Austria. With his Director, Rev. Otto Faller and Professor Alois Grimm, he was among the first to arrive in the Black Forest, where the Jesuits opened Kolleg St. Blasien for some 300 students forced out of Austria. After St. Blasien, he completed his theology studies in Valkenburg, Holland (1934–1936), and in Frankfurt (1936–1937).