The Principality of Bayreuth or Margraviate of Brandenburg-Bayreuth was an immediate territory of the Holy Roman Empire, ruled by a Franconian branch of the Hohenzollern dynasty. Since Burgrave Frederick VI of Nuremberg was enfeoffed with the Margraviate of Brandenburg in 1415/17, the Hohenzollern princes transferred the margravial title to their Franconian possessions, though the principality never had been a march. Until 1604 they used Plassenburg Castle in Kulmbach as their residence, hence their territory was officially called the Principality of Kulmbach or Margraviate of Brandenburg-Kulmbach until the Empire's dissolution in 1806.

The Burgraviate of Nuremberg was a state of the Holy Roman Empire from the early 12th to the late 15th centuries. As a burgraviate, it was a county seated in the town of Nuremberg; almost two centuries passed before the burgraviate lost power over the city, which became independent from 1219. Eventually, the burgraviate was partitioned to form Brandenburg-Ansbach and Brandenburg-Bayreuth.