Diocese of Hispania

The Diocese of Hispania was a late antique administrative unit (Dioecesis) of the Roman Empire on the Iberian Peninsula.

The diocese was governed by a vicarius responsible to the praetorian prefect of Gaul.

The Diocese of Hispania originally comprised the following six provinces: The Balearic Islands were detached from Tarraconensis in the 4th century as the independent province of Hispania Balearica, becoming the seventh province within the Diocese of Hispania.

At the division of the Empire in 395, the structure was changed into four prefectures, 15 dioceses and 119 provinces.

With the conquest of Hispania by the Vandals, Alans, and Suebi in 409, the diocese began to collapse.

Roman diocese from around 293 to 337
Provinces of Hispania under Diocletian (Mauretania Tingitana not shown)
This map illustrates the 'Diocesis Hispaniarum,' highlighting its ecclesial metropolitan sees and their suffragan dioceses, as detailed by Frederick Meyrick in his book, 'The Church in Spain.' The map also includes the province of Balearica.