| Provincia Augustamnica|
|Province of the Byzantine Empire|
|Today part of||Egypt|
Augustamnica (Latin) or Augoustamnike (Greek) was a Roman province of Egypt created during the 5th century and was part of the Diocese of Oriens first and then of the Diocese of Egypt, until the Muslim conquest of Egypt in the 640s.
The province was instituted in tetrarchic times under the name of Aegyptus Herculia (for Diocletian's colleague Maximian), with ancient Memphis as capital (315-325), but later re-merged in Aegyptus. In 341 the province was reconstituted, but the name was changed into Augustamnica to remove pagan connotations. It consisted of the Eastern part of the Nile delta and the ancient Heptanomia, and belonged to the Diocese of Oriens.
Augustamnica was the only Egyptian province under a Corrector, a lower ranking governor.
Around 381 the provinces of Egypt become a diocese in their own, and so Augustamnica become part of the Diocese of Egypt. Between 386 and the end of the 4th century the new province of Arcadia Aegypti, named after Emperor Arcadius, was created with territory from Augustamnica, the Heptanomia; Augustamnica's capital was moved to Pelusium.
From the military point of view, the province was under the Comes limitis Aegypti. According to the Notitia dignitatum, the province hosted several military units:
- Ala secunda Ulpia Afrorum at Thaubasteos
- Ala secunda Aegyptiorum at Tacasiria,
- Cohors prima sagittariorum at Naithu
- Cohors prima Augusta Pannoniorum at Tohu,
- Cohors prima Epireorum at Castra Iudaeorum
- Cohors quarta Iuthungorum at Affroditus
- Cohors secunda Ituraeorum at Aiy
- Cohors secunda Thracum at Muson
- Cohors quarta Numidarum at Narmunthi
Augustamnica I and II
Augustamnica Prima had Pelusium as metropolis (administrative centre) and was under a corrector, who governed the following cities: Pelusium, Setroithes (or Sethroitis), Tanis, Thmuis, Rhinocorura, Ostracine (or Ostracina), Pentaschoinon, Casium, Aphnaion, Hephaestus, Panephysis, the Tents outside Gerra, the Tents inside Gerra, Thennesus, Panephusis.
Leontopolis was the capital of Augustamnica Secunda.
- Barrington Atlas of the Greek and Roman World, p. 102
- Annuario Pontificio 2013 (Libreria Editrice Vaticana 2013 ISBN 978-88-209-9070-1), "Sedi titolari", pp. 819-1013
- Alan K. Bowman, Egypt after the pharaohs: 332 BC-AD 642. From Alexander to the Arab Conquest, University of California Press, 1996, ISBN 0-520-20531-6, p. 79.
- Keenan, p. 613.
- Notitia Dignitatum In partibus Orientis, XXVIII.
- Georgius Cyprius, 685-700; Hierocles, Synecdemos 726:3-727:6.
- Keenan, James K. (2000). "Egypt". In Cameron, Averil; Ward-Perkins, Bryan; Whitby, Michael. The Cambridge Ancient History, Volume XIV - Late Antiquity: Empire and Successors, A.D. 425–600. Cambridge University Press. pp. 612–637. ISBN 978-0-521-32591-2.