Mibiarca
The diocese of Mibiarca is a suppressed and titular see of the Roman Catholic Church, in today's Tunisia. It is an ancient episcopal seat of the province of Byzacena.
The only known bishop of this African diocese was John, who participated in the anti-monotheistic council of Carthage. Today Mibiarca survives as a titular bishopric and the current bishop-owner is Luis Morgan Casey, an apostolic vicar of Pando.