Albert Hartl (1904–1982) was a former Catholic priest in Germany who joined the National Socialist German Workers' Party (Nazi Party) in 1933 and the Sicherheitsdienst (SD, an intelligence agency) the following year.^[1]

Hartl studied for the priesthood from 1916 to 1929 at a seminary in Freising and the University of Munich. He was ordained in 1929 by the Archbishop of Munich Cardinal Michael von Faulhaber and began teaching, including at the Freising seminary.^[2]

While teaching at Friesing, Hartl became involved with a group of priests who had joined the Nazi Party, and in 1933 he signed up as a paid SD informant. He reported Father Josef Rossberger, apparently his best friend, for anti-Nazi activity, which led to Rossberger's trial and imprisonment, and Hartl becoming a protégé of Reinhard Heydrich, head of the SD. Consequently Hartl renounced the priesthood and joined the SD himself.^[2][3] In 1935, according to Gitta Sereny, he became the SD's Chief of Church Information, ^[4] and was tasked with the collection of information about party members that had close association with the church and collecting information from them.^[5] In March 1941, when the Reich Security Head Office was reorganized, he was placed in charge of a Gestapo office known as IV B ("Sects"). Department IV B4, led by Adolf Eichmann, was the office responsible for the deportation of Jews outside Poland.^[6]

• Alvarez, David; Graham, Robert A. (2003). Nothing Sacred: Nazi Espionage Against the Vatican, 1939–1945. London and Portland: Frank Cass. ISBN 0-7146-4302-5.
• Hilberg, Raul (2003). The Destruction of the European Jews. Vol. II (3rd ed.). New Haven and London: Yale University Press. ISBN 0-300-09587-2.
• Longerich, Peter (2012). Heinrich Himmler. New York: Oxford University Press. ISBN 978-0-19-959232-6.
• Sereny, Gitta (1995) [1974]. Into That Darkness: From Mercy Killing to Mass Murder. London: Pimlico. ISBN 978-0-7126-7447-8.