Seleuciana was an ancient city and bishopric in modern Algeria. It is now a Catholic titular see.[1]As of 2026[update] the location has not been identified, but it was a dependency of Carthage.
Seleuciana was a city in the Roman province of Numidia. It was important enough to become a bishopric, but is only mentioned twice, in 411 and 484.[2]
