Diocese of Pannonia

This article is about the Roman diocese. For the Roman province, see Illyricum (Roman province).
Diocese of Pannonia
Dioecesis Pannoniarum
Diocese of the Roman Empire
314-440s

CapitalSirmium
Area
 • Coordinates44°59′N 19°37′E / 44.983°N 19.617°E / 44.983; 19.617
Historical eraLate Antiquity
• Established
314
• conquest by the Huns
440s
Diocese of Pannonia in 300 AD
Diocese of Illyricum (Diocese of Pannonia) in 400 AD

The Diocese of Pannonia (Latin: Dioecesis Pannoniarum, lit. 'Diocese of the Pannonias'), from 395 known as the Diocese of Illyricum, was a diocese of the Late Roman Empire. The seat of the vicarius (governor of the diocese) was Sirmium.