The Byzantine Catholic Metropolia of Pittsburgh is an autonomous Byzantine Rite particular church of the Catholic Church, originally serving members of the Ruthenian Catholic Church and their descendants in the United States. The Metropolia itself is composed of the Archeparchy of Pittsburgh (60,200 faithful, 84 parishes, 83 priests) and the Eparchies of Parma (12,401 faithful, 37 parishes, 38 priests), Passaic (24,031 faithful, 89 parishes, 84 priests) and Van Nuys (2,849 faithful, 19 parishes, 25 priests). Although the Ruthenians remain the majority of the members of the Metropolia, the eparchies have ordinary jurisdiction over parishes of other Byzantine Rite traditions that do not have an established hierarchy in the United States, including the Italo-Albanians, Hungarians, Slovaks, and Croatians.

When the original center of the Ruthenian Catholic Church was under atheistic Communist rule and unable because of persecution to organize publicly, the impossibility of regular communication with it meant that the distant

The Archeparchy of Pittsburgh was originally established, in 1924, as the Apostolic Exarchate for the Byzantine-Rite Faithful of Podocarpathia, becoming the Eparchy of Pittsburgh of the Ruthenians in 1963, the Metropolitan See of Munhall of the Ruthenians in 1969, and changing its name to Pittsburgh of the Byzantines in 1977. The dates of foundation of the suffragan sees are: Passaic 1963, Parma 1969, Van Nuys 1981.

The statistical information given above has been taken from the 2005 edition of the Annuario Pontificio.