List of Late Roman provinces

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

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 (several modern countries).

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

Viennensis was named after the city of Vienna (now Vienne), 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 ('7 Provinces') with similar boundaries.

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

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.

Suburbicaria indicates proximity to Rome, the Urbs (capital city). It included the islands, which were previously considered distinct from Italy.

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

Africa included the central part of Roman North Africa:

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.

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