Caesariana (Cæsariana) was an Ancient city and diocese in Roman North Africa.
It was one of over 120 cities in the Roman province of Numidia that were important enough to become a suffragan bishopric of the metropolitan of Carthage, but would fade away, plausibly at the seventh century advent of Islam.
Its ruins are at Kessaria (obviously still named after Caesariana) in modern Algeria.
Its only historically documented incumbent was not Catholic but the schismatic Donatist Cresconius, who attended the Council of Carthage of 411, where his heresy was condemned as such.
It has had the following incumbents, of the fitting episcopal (lowest) rank, with two archiepiscopal exceptions: