Pannonia, Byzantine Empire

Pannonia Provincia Pannonia επαρχία Παννονία
Province of the Byzantine Empire
c. 510–580s →
The Byzantine northern Balkans in the 6th century. The province of Pannonia is located in the northwestern corner of imperial territory.
Capital		Sirmium
History
•	Established	c. 510
•	Sirmium given to Gepids
•	Partition with the Avars	580s
Today part of		Serbia

Pannonia was a Byzantine province, which existed in present-day Syrmia region of Serbia in the 6th century. Its capital was Sirmium (modern-day Sremska Mitrovica).

It differed significantly in its area from the Roman province of Pannonia, and it was subordinate to the Diocese of Dacia.

The province was located between the Danube river in the north-east and Sava river in the south. The western border of Byzantine Pannonia stretched approximately to the estuary or river Drina into Sava. Important cities in the area were Sirmium and Bassianae. Byzantine Pannonia bordered Byzantine province of Moesia Prima in the south and Avar Khaganate in the west, north and east.

Byzantine Pannonia was named after the former Roman province of Pannonia, which included much more territory. The Byzantine province included only a small eastern part of historical Pannonia. In the 2nd century, the original Roman province was divided into two provinces: Pannonia Inferior and Pannonia Superior. Subsequently, the area was divided into four provinces: Pannonia Prima, Pannonia Valeria, Pannonia Savia and Pannonia Secunda. Capital of Pannonia Secunda was Sirmium.

In the middle of the 5th century, the territory of former Roman Pannonia was ceded to the Huns by Theodosius II, and after the death of Attila it successively passed (entirely or partially) into the hands of the Ostrogoths, Lombards and Gepids.

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