| Native Name: | Greek, Ancient (to 1453);: επαρχία Θεοδωριάδος |
| Common Name: | Euphratensis |
| Subdivision: | Province |
| Nation: | the Byzantine Empire |
| Era: | Antiquity |
| Capital: | Laodicea |
| Year Start: | 528 |
| Event Start: | Established by emperor Justinian I |
| Year End: | 7th Century |
| Event End: | Muslim conquest of Syria |
| P1: | Syria Prima |
| P2: | Syria Secunda |
| S1: | Bilad al-Sham |
Theodorias (el|Θεοδωριάς) was a Byzantine province created in 528 by Emperor Justinian I and named in honour of his wife, the Empress Theodora.[1]
It comprised a small coastal territory taken from the earlier provinces of Syria Prima and Syria Secunda. The new province remained part of the Diocese of the East. Its capital was Laodicea (in Syria; now Latakia), and it also included the cities of Paltus (Arab al-Mulk), Balaneae and Gabala. Ecclesiastically, these cities retained their former allegiances to the metropolitan bishops of Syria Prima and Secunda: Antioch and Apamea in Syria.