The Diocese of Magdeburg is a Latin Church diocese of the Catholic Church, located in the German state of Saxony-Anhalt. Its seat is Magdeburg; it is suffragan to the Archdiocese of Paderborn.

The Metropolitan Archdiocese of Paderborn is a Latin Church archdiocese of the Catholic Church in Germany; its seat is Paderborn. It was a diocese from its foundation in 799 until 1802, and again from 1821 until 1930. In 1930, it was promoted to an archdiocese. From 1281 until 1802, the Bishopric of Paderborn was also a state of the Holy Roman Empire.