The Prince-Bishopric of Bamberg was an ecclesiastical State of the Holy Roman Empire. It goes back to the Roman Catholic Diocese of Bamberg established at the 1007 synod in Frankfurt, at the behest of King Henry II to further expand the spread of Christianity in the Franconian lands. The bishops obtained the status of Imperial immediacy about 1245 and ruled their estates as Prince-bishops until they were subsumed to the Electorate of Bavaria in the course of the German Mediatisation in 1802.

The Metropolitan Archdiocese of Bamberg is a Latin Church diocese of the Catholic Church in Bavaria, one of 27 in Germany. In 2015, 32.9% of the population identified as Catholic, and 15.6% of those reported that they attend Mass on Sunday; a relatively high number in Germany. The archdiocese comprises the majority of the administrative regions of Upper Franconia and Middle Franconia, as well as a small part of Lower Franconia and the Upper Palatinate. Its seat is Bamberg. The dioceses of Speyer, Eichstätt, and Würzburg are subordinate to it. The diocese was founded in 1007 out of parts of the dioceses of Eichstätt and Würzburg. In 1817, the diocese was raised to an archdiocese.