Catholic Church and Nazi Germany

The Catholic Church, led by Popes Pius XI (1922 to 1939) and Pius XII (1939 to 1958), confronted National Socialism from the rise of the Nazi Party through the Second World War. In the early 1930s, about one third of the German population was Catholic, and Catholic regions generally gave the Nazi Party lower electoral support than the national average. Although the Catholic-aligned Centre Party voted for the Enabling Act of 1933, the Church hierarchy and many Catholic leaders had criticized National Socialism since the 1920s, and numerous bishops issued formal condemnations of Nazi ideology.

The 1933 Reichskonkordat formally guaranteed Catholic rights, but the regime soon restricted Catholic institutions, closed schools and organizations, and targeted clergy and lay leaders, including those killed during the Night of the Long Knives. Pius XI's 1937 encyclical Mit brennender Sorge accused the government of violating the concordat and promoting hostility towards the Church. Persecution intensified in annexed and occupied territories during the war, particularly in Poland, Slovenia, and Austria, where many clergy were imprisoned or killed. Thousands of priests were held at Dachau, where more than 1,000 died.

Catholic responses to Nazism varied. Some clergy and laypeople resisted, while others remained passive. The Vatican used diplomatic channels to assist victims and advocate for peace, and Vatican Radio and other Catholic media outlets condemned Nazi atrocities. Historian Alan Bullock argued that the Church did not feel it was "possible to take up an attitude of open opposition to the regime", while Mary Fulbrook wrote that Christian belief often "proved compatible with at least passive acquiescence in, if not active support for, the Nazi dictatorship".

Catholics also played significant roles in rescuing Jews in several occupied countries by providing false documents, shelter, and diplomatic assistance. Pius XII's wartime actions remain debated, although he condemned racial persecution in public statements such as Summi Pontificatus and his 1942 Christmas Address. After the war, some individual clergy aided fleeing Nazis without institutional sanction, and the Vatican later acted to remove those involved.