Diocese of Dacia

Diocese of Dacia
Dioecesis Daciarum
Διοίκησις Δακίας
Diocese of the Roman Empire
ca. 337 – ca. 602

Dioceses of Dacia and Thrace in 400 AD
CapitalSerdica (modern Sofia)
Historical eraLate Antiquity
• Split from Diocese of Moesia
ca. 337
• Merged into the newly formed Praetorian prefecture of Illyricum
357
• Merged into the Praetorian prefecture of Italy
384
• Merged back into Illyricum after Theodosius' death
395
• Devastated by the Avars and the Slavs
ca. 602

The Diocese of Dacia (Latin: Dioecesis Daciae) was a diocese of the later Roman Empire, in the area of modern western Bulgaria, central Serbia, Montenegro, Kosovo, northern Albania and northern North Macedonia. It was subordinate to the Praetorian prefecture of Illyricum. Its capital was at Serdica (modern Sofia).