List of Late Roman provinces


This article presents a list of Roman provinces in the Late Roman Empire, as found in the Notitia Dignitatum.

[Praetorian prefecture of Gaul]s

In Latin, Gallia was also sometimes used as a general term for all Celtic peoples and their territories, such as all Brythons, including Germanic and Iberian provinces that also had a population with a Celtic culture. The plural, Galliarum in Latin, indicates that all of these are meant, not just Caesar's Gaul.

Diocese of Gallia">Diocese of Gaul">Diocese of Gallia

Gallia covered about half of the Gallic provinces of the early empire:

Diocesis Viennensis">Septem Provinciae">Diocesis Viennensis

The diocese of Vienna was named after the city of Vienna, and almost entirely in present-day France, roughly south of the Loire. It was originally part of Caesar's newly conquered province of Transalpine Gaul, but a separate diocese from the start.
In the fifth century, Viennensis was replaced by a diocese of Septem Provinciae with similar boundaries.

[Diocese of Hispania]

Hispania was the name of the whole Iberian Peninsula. It covered Hispania and the westernmost province of Roman Africa:

Diocese of Britannia">Roman Britain">Diocese of Britannia

[[Praetorian prefecture of Italy|Praetorian prefecture of Italy and Africa (western)]]

Originally there was a single diocese of Italia, but it was eventually split into a northern section and a southern section. The division of Italy into regions had already been established by Aurelian.

[[Diocese of Suburbicarian Italy|Diocese of Italia suburbicaria]]

Suburbicaria indicates proximity to Rome, the Urbs. It included the islands, which were previously considered outside Italy.

Diocese of Italia annonaria">Diocese of Annonarian Italy">Diocese of Italia annonaria

Annonaria refers to a reliance on the area for the provisioning of Rome. It encompassed northern Italy and Raetia.

[Diocese of Africa]

Africa included the central part of Roman North Africa:

Praetorian Prefecture of Illyricum">Praetorian prefecture of Illyricum">Praetorian Prefecture of Illyricum

The Prefecture of Illyricum was named after the former province of Illyricum. It originally included two dioceses, the Diocese of Pannonia and the Diocese of Moesia. Constantine I later split the Diocese of Moesia into two dioceses: the Diocese of Macedonia and the Diocese of Dacia.

[Diocese of Pannonia]

Pannonia was one of the two dioceses in the eastern quarters of the Tetrarchy not belonging to the cultural Greek half of the empire ; It was transferred to the western empire when Theodosius I fixed the final split of the two empires in 395.

[Diocese of Dacia]

The Dacians had lived in the Transylvania area, annexed to the Empire by Trajan. However, during the invasions of the third century Dacia was largely abandoned. Some inhabitants evacuated from the abandoned province settled on the south side of the Danube. They renamed their new homeland Dacia to diminish the impact that abandoning the original Dacia had on the Empire's prestige. The diocese was transferred to the western empire in 384 by Theodosius I, probably in partial compensation to the empress Justina for his recognition of the usurpation of Magnus Maximus in Britannia, Gaul and Hispania.

[Diocese of Macedonia]

The Diocese of Macedonia was transferred to the western empire in 384 by Theodosius I, probably in partial compensation to the empress Justina for his recognition of the usurpation of Magnus Maximus in Britannia, Gaul and Hispania.

Praetorian Prefecture of Oriens">Praetorian prefecture of the East">Praetorian Prefecture of Oriens

As the rich home territory of the eastern emperor, the Oriens prefecture would persist as the core of the Byzantine Empire long after the fall of Rome. Its praetorian prefect would be the last to survive, but his office was transformed into an essentially internal minister, stripped of its original military function.

[Diocese of Thrace]

Thrace was the easternmost corner of the Balkans and the European hinterland of Constantinople.

[Diocese of Asia]

Asia in Antiquity stood for Anatolia. This diocese centred on the earlier Roman province of Asia, and only covered the rich western part of the peninsula, mainly near the Aegean Sea.

[Diocese of Pontus]

Pontus is the Latinized form of Greek Pontos, the name of a Hellenistic kingdom, which in turn is derived from the Euxine Pontus, the Greco-Roman name of the Black Sea.
It mainly contains parts of Asia minor near those coasts, but also includes the north of very variable border with Rome's enemy Parthia/Persia.

[Diocese of Oriens]

The Eastern diocese shared its geographic name with the prefecture it belonged to, even after it lost its richest part, Egypt, becoming a separate diocese; but militarily crucial on the Persian border and unruly desert tribes.
It comprised mainly the modern Arabic Mashriq except for the desert hinterland:
Further it contained the southeastern coast of Asia Minor and the close island of Cyprus

Diocese of Aegyptus">Diocese of Egypt (Late Antiquity)">Diocese of Aegyptus

This diocese, comprising northeastern Africa—mainly Egypt, the rich granary and traditional personal domain of the emperors—was the only diocese that was not under a vicarius, but whose head retained the unique title of Praefectus Augustalis. It was created by a split of the Diocese of Oriens.
All but one, the civilian governors were of the modest rank of Praeses provinciae.
  • Aegyptus came to designate Lower Egypt around Alexandria. Originally it was named Aegyptus Iovia. Later it was divided into two provinces.
  • Augustamnica was the remainder of Lower Egypt, together with the eastern part of the Nile delta – the only Egyptian province under a Corrector, a lower ranking governor. Originally it was named Aegyptus Herculia. Later it was divided in two provinces
  • Thebais was Upper Egypt. Nubia south of Philae had been abandoned to tribal people. Later it was divided into two provinces, Superior and Inferior.
  • Arcadia
Apart from modern Egypt, Aegyptus also comprised the former province of Cyrenaica, being the east of modern Libya. Cyrenaica was split into two provinces, each under a praeses: