This is a list of bishops, prince-bishops, and administrators of Verden. The Catholic Diocese of Verden (German: Bistum Verden), was a suffragan of the Archdiocese of Mainz. From the 12th century, the Bishop of Verden was also, ex officio, a prince of the Holy Roman Empire and the ruler of a state in imperial immediacy — the Prince-Bishopric of Verden (German: Hochstift Verden. The Prince-Bishopric was established in 1180 and disestablished in 1648. The city of Verden upon Aller was the seat of the cathedral and the cathedral chapter. The bishop also resided there until 1195 when the residenz was moved to Rotenburg upon Wümme.