Hephæstus was a town in Roman Egypt, in the province of Augustamnica Prima, the eastern part of the Nile Delta.
The name Hephæstus is known only from ecclesiastical sources; its Egyptian name and its site are unknown.
The original diocese was in Augustamnica Prima, a suffragan of Pelusium.
[1] It is mentioned by Hierocles[2] and by George of Cyprus, as among the thirteen towns of Augustamnica Prima.
[dubious – discuss] It remains a Roman Catholic titular see.