Parthenia was a Roman–Berber town in the former Roman province of Mauretania Sitifensis, the easternmost part of ancient Mauretania. It was located in what is now northern Algeria.
Gratianopolis was an ancient city and Roman Catholic diocese in Mauretania Caesariensis in present-day Algeria. It was one of several towns named after the Roman emperor Gratian, and is only known from mentions in church council minutes. Its history, location and present condition are unknown. The name survives as a Roman Catholic titular see, and since 1911 has been the title of the Greek Catholic Apostolic Exarchate.
Lesvi is a Roman Catholic titular bishopric in the former Ecclesiastical province of Mauretania Sitifensis, suffragan of Sitifis, or Sétif, in modern Algeria. It is not, as is sometimes stated, the Island of Lesbos, which never was a titular bishopric, but possesses two titular archbishoprics: Mytilene and Methymna.
Mauretania Sitifensis was a Roman province in Northwest Africa. The capital was Setifis.
Medjana is a town and commune (municipality) in Bordj Bou Arréridj Province, Algeria. It is the (approximate) location the ancient city and bishopric of Vardimissa, which remains a Latin Catholic titular see.
Ziama Mansouria is a town and commune in Jijel Province, Algeria. According to the 2008 census it has a population of 12,642.
Albulae is an ancient city and former bishopric in Roman Africa. It remains a titular see of the Roman Catholic Church. It is identified with the modern town of Ain Temouchent, in present Algeria, near the Moroccan border.
Aquae Albae in Byzacena was an Ancient city and bishopric in Roman Africa and remains a Latin Catholic titular see.
Sétifis, was a Roman town located in northeastern Algeria. It was the capital of the Roman province called Mauretania Sitifensis, and it is today Setif in the Sétif Province (Algeria).
Castra Nova was a Roman-era city and diocese in Mauretania, Africa Proconsulare. The town is identified with the stone ruins at Mohammadia, Mascara in modern Algeria. It is now a Roman Catholic titular see.
Taborenta, Mauretania Caesariensis was a Berber civitas (town) and bishopric in Roman North Africa. It disappeared during the 7th century, and is assumed to be near Saida in modern Algeria. It was nominally restored in 1933 as a titular see.
Tabaicara was a Roman-Berber civitas and bishopric in Mauretania Caesariensis. It is now a Latin Catholic titular see.
Turris in Mauretania is an ancient settlement of Roman North Africa in the Roman province of Mauretania Caesariensis. The location is unknown but believed to be in Algeria. The city was believed to be the site of an ancient bishopric but no bishops of antiquity are known to us. The suffix "in Mauretania" is to differentiate the town from cities that existed in Spain and adjoining provinces of Roman North Africa.
Thucca in Numidia was an Ancient Roman era town and the seat of an ancient Bishopric during the Roman Empire, which remains only as a Latin Catholic titular see.
Cissita was a town and bishopric of Roman North Africa, which only remains as a Catholic titular see.
Tigamibena was an ancient city and bishopric in Roman Mauretania.
Obbi was an ancient city and former diocese in Africa Proconsulare. It is now a Roman Catholic titular see.
Summula was an ancient city and bishopric in Roman North Africa. It is now a Latin Catholic titular see.
Media was an ancient city and former bishopric in Roman North Africa, now a Latin Catholic titular see in Algeria.
Equizetum is a former city and bishopric in Roman North Africa which only remains a Latin Catholic titular see.
Algeria 