Gera(s) was an ancient city and former bishopric in Roman Egypt and remains a Latin Catholic titular see.
Its modern location, now in Egypt, is unclear.
Gera(s) was important enough in the Late Roman province of Augustamnica Prima to be one of the suffragans of its capital Pelusium's Metropolitan Archbishopric. It was however to fade completely.
The diocese was nominally restored as a Latin Catholic titular bishopric in the 18th century under the name Gerrha (Gerra in Curiate Italian), which was changed in 1925 to Gera(s).
It is vacant since decades, having had the following incumbents, all of the fitting episcopal (lowest) rank :
Aprus or Apros, also Apri or Aproi (Ἄπροι), was a town of ancient Thrace and, later, a Roman city established in the Roman province of Europa.
Dorylaeum or Dorylaion, called Şarhöyük in Turkish language, was an ancient city in Anatolia. It is now an archaeological site located near the city of Eskişehir, Turkey.
The Latin Patriarchate of Alexandria was a nominal Patriarchate of the Latin church on the see of Alexandria in Egypt,
Gratianopolis was an ancient city and Roman Catholic diocese in Mauretania Caesariensis in present-day Algeria. The name survives as a Roman Catholic titular see, and since 1911 has been the title of the Greek Catholic Apostolic Exarchate.
Furnos was the name of two towns and bishoprics in the Roman province of Proconsular Africa. They are referred to as Furnos Maior and Furnos Minor, as now as separate Latin Catholic titular sees.
Magydus was an settlement and bishopric of ancient Pamphylia on the Mediterranean coast of southwestern Asia Minor, which remains a Latin Catholic titular see. It is probably the same as Mygdale (Μυγδάλη) described in the Stadiasmus Maris Magni.
The Roman Catholic Metropolitan Archdiocese of Izmir is a Latin archdiocese of the Roman Catholic Church in Asian Turkey (Anatolia).
The Roman Catholic Diocese of Guadix is a Latin Catholic suffragan bishopric in the Ecclesiastical province of the Metropolitan of Granada in Andalusia, southern Spain and a Latin titular bishopric under its Ancient name of Acci. Its cathedral episcopal see is Nuestra Señora de la Anunciación, dedicated to Our Lady of the Annunciation, in the city of Guadix, administrative province of Granada. It was commenced in 1710, on the site occupied by the principal mosque, and completed in 1796.
The Italian Latin Catholic Diocese of (Diano-)Teggiano-Policastro, in Campania, has existed since 1850, under its present name since 1986. In that year the Diocese of Diano-Teggiano was united with the diocese of Policastro.
The Diocese of Pult was a Latin Catholic diocese in northern Albania until abolished in 2005, when it was merged into the Metropolitan Archdiocese of Shkodër-Pult.
The Roman Catholic Diocese of Leavenworth is a Latin rite former bishopric and present titular bishopric in and originally around Kansas state, Midwestern United States.
Ain Zana (Aïn-Zana) is a town and commune in Souk Ahras Province in north-eastern Algeria. It is the site of Diana Veteranorum, a former ancient city and bishopric in Numidia. It is now the Latin Catholic titular see, Diana.
Ptolemais was an ancient port city on the Canaanite coast in Palestine region. It was also called Ptolemais in Canaan (or Akko, Ake, or Akre in Canaanite Language. It was an Ancient bishopric, which became a double Catholic titular see.
The Roman Catholic Diocese of Gravelbourg was a Latin suffragan of the Archdiocese of Regina and presently a Latin Catholic titular see.
Euroa in Phoenicia is a former city, which also hosted a bishopric. It remains a Latin Catholic titular see
The Roman Catholic Diocese of La Canea or Cidonia was a bishopric on Crete, with see at present Chania, and afterward was twice a Latin titular see.
The Roman Catholic Diocese of Adramyttium was established in the 13th century as a suffragan of Cyzicus, but was later made a suffragan of Ephesus. In 1222, an unnamed bishop was entrusted with a papal assignment.
The Roman Catholic Diocese of Castro del Lazio was a residential bishopric from 600 to 1649 and is now a Latin Catholic titular see under the shortened name Castro.
The Roman Catholic Archdiocese of Ohrid was a Latin Catholic archdiocese, suppressed in the 1700s, and is now a titular see, at modern Ohrid in North Macedonia.
The Diocese of Tiberias was a significant Latin Catholic bishopric in the Crusader state Principality of Galilee, a major direct vassal of the Latin Kingdom of Jerusalem, with see in Tiberias, after which city the principality was also known as Principality of Tiberias or the Tiberiad. It is now a titular see.