The Archbishopric of Magdeburg was a Latin Catholic archdiocese (969–1552) and Prince-Archbishopric (1180–1680) of the Holy Roman Empire centered on the city of Magdeburg on the Elbe River.
Planned since 955 and established in 967, the archdiocese had de facto turned void since 1557, when the last papally confirmed prince-archbishop, the Lutheran Sigismund of Brandenburg came of age and ascended to the see. All his successors were only administrators of the prince-archbishopric and Lutheran too, except the Catholic cleric Leopold William of Austria (1631–1635). In ecclesiastical respect the remaining Catholics and their parishes and abbeys in the former archdiocese were put under supervision of the Archdiocese of Cologne in 1648 and under the jurisdiction of the Apostolic Vicariate of the Northern Missions in 1670.