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| Nations | Period of existence in the Peninsula |
|---|---|
| Roman Empire | 27 BC - 395 AD |
238
- The unified province Tarraconensis or Hispania Citerior is reestablished. Asturias and Gallaecia are again part of it.
293
- The new dioecesis Hispaniae become one of the four dioceses governed by a vicarius of the praetorian prefecture of Gaul (also comprising the provinces of Gaul, Upper and Lower Germania and Britannia). The diocese, with capital at Emerita Augusta (modern Mérida), comprise the five peninsular Iberian provinces (Baetica, Gallaecia and Lusitania, each under a governor styled consularis; and Carthaginiensis, Tarraconensis, each under a praeses), the Insulae Baleares and the North African province of Mauretania Tingitana.