The Metropolis of Philadelphia (Greek: Μητρόπολη Φιλαδελφείας) was an ecclesiastical territory (diocese) of the Ecumenical Patriarchate of Constantinople in western Asia Minor, modern Turkey.
[1][2] As a result of the gradual Turkish conquest of western Anatolia during the 14th century, the Christian population decreased dramatically and consequently several bishoprics and metropolises became inactive.
However, probably due to the further decrease of the Christian population, the local metropolis eventually became inactive, and in 1577 the see was transferred to Venice and the title of the metropolitan of Philadelphia was used by the prelate of the Greek Orthodox community of the city until 1712.
Accordıng to Greek estimates, published in 1905, the metropolis of Philadelphia included 19 Orthodox communities, most of them Turkish-speaking Christians, consisting of 14,003 people, 25 parishes and 23 priests.
The most numerous and active communities, apart from the one found in the city of Philadelphia itself, were in Kula region, Uşak, Denizli, Salihli and Afyon Karahisar.