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.

Paderborn is a city in eastern North Rhine-Westphalia, Germany, capital of the Paderborn district. The name of the city derives from the river Pader and Born, an old German term for the source of a river. The river Pader originates in more than 200 springs near Paderborn Cathedral, where St. Liborius is buried.