| Diocese of Thrace Dioecesis Thraciae Διοίκησις Θρᾴκης | |
|---|---|
| Diocese of theRoman Empire | |
| 314–535 | |
 The Diocese of Thracec. 400. | |
| Capital | Philippopolis |
| Historical era | Late Antiquity |
• Established | 314 |
• Diocese abolished by emperorJustinian I | 535 |
| Today part of | Bulgaria Greece Turkey Romania |
TheDiocese ofThrace (Latin:Dioecesis Thraciae,Greek:Διοίκησις Θρᾴκης) was adiocese of the laterRoman Empire, incorporating the provinces of the easternBalkan Peninsula (comprising territories in modern south-easternRomania, central and easternBulgaria, andGreek andTurkish Thrace).Philippopolis (modern Plovdiv, in Bulgaria) was the capital.
The diocese was established as part of the reforms ofDiocletian andConstantine the Great, and was headed by avicarius subordinate to thepraetorian prefecture of the East. As outlined in theNotitia Dignitatum ofc. 400, the diocese included the provinces ofEuropa,Thracia,Haemimontus,Rhodope,Moesia II andScythia Minor.
In May 535, withNovel 26,Justinian I abolished the Diocese of Thrace. Itsvicarius retained his rank ofvir spectabilis and received the new title ofpraetor Justinianus, uniting in his hand both civil and military authority over the provinces of the former diocese, in a crucial departure from the strict separation of authority from the Diocletianian system. A year later, in May 536, the two Danubian provinces, Moesia Inferior and Scythia, where detached to form, along with other provinces, thequaestura exercitus.[1]
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