Octaba was an ancient Roman–Berber city in the province of Africa Proconsularis and Byzacena in late antiquity.^[1] Its exact location is now lost, but it was in the Sahel region of Tunisia. In 484AD the town's Catholic bishop, Sabinico, attended a synod in Carthage called by the Arian king Huneric, the Vandal.^[2] At the conclusion of that synod, Sabinico was sent into exile by the king.

Today Octabia survives only as a titular bishopric of the Roman Catholic Church.

Bishops of Octabia

• Sabinico (fl. 484)
• Antônio Mazzarotto (1965–1971)
• Josef Vrana (1973–1987)
• Paul Stephen Loverde (1988–1993)
• Luciano Bergamin,(2000–2002)
• Donald Lapointe, (2002–current) ^[3]