Ancient Roman provinces

The Diocese of Thrace (Latin: Dioecesis Thraciae, Greek: Διοίκησις Θράκης) was a diocese of the later Roman Empire, incorporating the provinces of the eastern Balkan Peninsula (comprising territories in modern south-eastern Romania, central and eastern Bulgaria, and Greek and Turkish Thrace).

Gaul (Latin: Gallia) was a region of Western Europe during the Iron Age that was inhabited by Celtic tribes, encompassing present day France, Luxembourg, Belgium, most of Switzerland, Northern Italy, as well as the parts of the Netherlands, Central Italy and Germany on the west bank of the Rhine.

Sicilia was the first province acquired by the Roman Republic, organized in 241 BC as a proconsular governed territory, in the aftermath of the First Punic War with Carthage.

The Diocese of Asia (Latin: Dioecesis Asiana, Greek: Διοίκησις Ασίας/Ασιανής) was a diocese of the later Roman Empire, incorporating the provinces of western Asia Minor and the islands of the eastern Aegean Sea.

The Diocese of the East (Latin: Dioecesis Orientis, Greek: Ἑῴα Διοίκησις Heoa Dioíkesis) was a diocese of the later Roman Empire, incorporating the provinces of the western Middle East, between the Mediterranean Sea and Mesopotamia.

The Kingdom of Soissons was a rump state of the Western Roman Empire in northern Gaul (present day France) for some twenty-five years during Late Antiquity.

Phoenice was a province of the Roman Empire encompassing the historical region of Phoenicia.

The Province of Corsica and Sardinia (Latin: Provincia Corsica et Sardinia) was an ancient Roman province including the islands of Corsica and Sardinia.

Euphratensis (Latin for "Euphratean"; Greek: Εὑφρατησία, Euphratēsía), fully Augusta Euphratensis, was a late Roman and then Byzantine province in Syrian region, part of the Byzantine Diocese of the East.

The Diocese of Pontus (Latin: Dioecesis Pontica, Greek: Διοίκησις Πόντου/Ποντικής) was a diocese of the later Roman Empire, incorporating the provinces of northern and northeastern Asia Minor up to the border with the Sassanid Empire in Armenia.

Arcadia or Arcadia Aegypti was a Late Roman province in northern Egypt.

The Diocese of Gaul (Latin: Dioecesis Galliarum, "diocese of the Gaul [province]s") was a diocese of the later Roman Empire, under the praetorian prefecture of Gaul.