The Ruthenian Greek Catholic Church, also known in the United States as the Byzantine Catholic Church, is a sui iuris (autonomous) Eastern Catholic church based in Eastern Europe and North America. As a particular church of the Catholic Church, it is in full communion with the Holy See. It uses the Byzantine Rite for its liturgies, laws, and cultural identity.

While not directly associated with the former Ruthenian Uniate Church, the Ruthenian Greek Catholic Church also derives its name from the Rusyn and Ruthenian Slavic peoples of Eastern Europe and their communion with Rome. While Ruthenian Catholics are not the only Eastern Catholics to utilize the Byzantine Rite in the United States, the Ruthenian Greek Catholic Church refers to itself as the "Byzantine Catholic Church" within the US.

The Ruthenian Church originally developed among the Rusyn people who lived in Carpathian Ruthenia. Christianity and the Byzantine Rite was brought to the Slavic peoples in the 9th century as a result of the missionary outreach of Saints Cyril and Methodius.

Following the Great Schism of 1054, the Ruthenian Church retained its Orthodox ties until the Union of Uzhhorod.

The present structure of the Ruthenian Greek Catholic Church traces its origins to the 1646 Union of Uzhhorod, when Eastern Orthodox clergy were received into communion with the Holy See of Rome. Sixty three Ruthenian clergy were received into the Catholic Church; in 1664 a union reached at Munkács (today Mukachevo, Ukraine) brought additional communities into the Catholic communion.

Initially, the Union only included lands owned or administered by the noble Drugeth family; essentially, most of the modern-day Presov Region and part of Zakarpattia Oblast: Abov County, Gömör County, Sáros County, Szepes County, Torna County, northern Zemplén County, parts of Ung County, and the city of Uzhhorod itself.

The resulting dioceses retained their Byzantine patrimony and liturgical traditions, and their bishops were elected by a council composed of Basilian monks and eparchial clergy. In this part of central and eastern Europe, the Carpathian Mountains straddle the borders of the present-day states of Hungary, Poland, Slovakia, Romania and Ukraine. Today, the church is multi-ethnic. Members of the metropolitan province of Pittsburgh are predominantly English-speaking. Most are descendants of Rusyns – including sub-groups like the Boikos, Hutsuls and Lemkos – but the descendants of other nationalities are also present such as Slovaks, Hungarians and Croats as well as those of non-Slavic and non-Eastern European ancestry. The modern Eparchy of Mukacheve in Ukraine is mostly Ukrainian-speaking but remains part of the greater Ruthenian Church.

After almost a thousand years of Hungarian rule the region became, in part, incorporated in Czechoslovakia after World War I. Annexation to the Soviet Union after the war led to persecution of the Ruthenian Catholic Church. Since the collapse of Communism the Ruthenian Catholic Church in Eastern Europe has seen a resurgence in numbers of faithful and priests.

In the 19th and 20th centuries, various Byzantine Catholics from Austria-Hungary arrived in the United States, particularly in coal mining towns. Members of the predominant Latin Church Catholic hierarchy were sometimes disturbed by what they saw as the innovation, for the United States, of a married Catholic clergy. At their persistent request, the Sacred Congregation for the Propagation of the Faith applied, on 1 May 1897, to the United States rules already set out in a letter of 2 May 1890 to François-Marie-Benjamin Richard, the Latin Archbishop of Paris. These rules stated that only celibates and widowed priests coming without their children should be permitted in the United States.

The dissatisfaction of many Ruthenian Catholics had already given rise to some groups placing themselves under the jurisdiction of what is today the Orthodox Church in America (at that time a mission of the Russian Orthodox Church). The leader of this movement was the widowed Ruthenian Catholic priest Alexis Toth, whose mistreatment by Archbishop John Ireland of Saint Paul, Minnesota, led to Toth's transfer to Eastern Orthodoxy. He brought with him many Ruthenian Catholics, around 20,000 by the time of his death with many who followed afterward, and was canonized a saint by the Orthodox Church in America in 1996.

The situation with Alexis Toth and the Latin Catholic bishops highlighted the need for American Eastern Catholics to have their own bishop. Pope Pius X appointed the Ukrainian bishop Soter Ortynsky in 1907 as bishop for all Slavic Eastern Catholics of the Byzantine rite in America. For this period the Ruthenian Byzantine Catholics were united to the Ukrainian Greek Catholics in the same eparchy. Ethnic tensions flared due to cultural differences (mostly of a political nature) between Ukrainians who came from Austrian-ruled Galicia and the Rusyns and other Byzantine Catholics who came from the Kingdom of Hungary.

This caused Rome to split the groups after Ortynsky's death, creating two ecclesiastical administrations for Eastern-rite Catholics in the United States, divided along nationality lines: one Ukrainian and the other Carpatho-Rusyn. Each was headed not by a bishop, but by an administrator: Father Peter Poniatyshyn for the Ukrainians and Father Gabriel Martyak for the Carpatho-Rusyns. Later, the Rusyn priest Basil Takach was appointed and consecrated in Rome on his way to America as the new eparchy's bishop. Bishop Takach is considered the first bishop of Ruthenian Catholics in America, and his appointment as the official founding of the Byzantine Catholic Metropolitan Church of Pittsburgh.

Clerical celibacy of American Eastern Catholics was restated with special reference to the Byzantine/Ruthenian Church by the 1 March 1929 decree Cum data fuerit, which was renewed for a further 10 years in 1939. Due to this and other similar factors, 37 Ruthenian parishes transferred themselves into the jurisdiction of the Greek Orthodox Ecumenical Patriarch in 1938, creating the American Carpatho-Russian Orthodox Diocese.

Relations with the Latin Church Catholic hierarchy have improved, especially since the Second Vatican Council, at which the Ruthenian Church influenced decisions regarding using the vernacular (i.e. the language of the people) in the liturgy. In its decree Orientalium Ecclesiarum, the Second Vatican Council declared:

The Catholic Church holds in high esteem the institutions, liturgical rites, ecclesiastical traditions and the established standards of the Christian life of the Eastern Churches, for in them, distinguished as they are for their venerable antiquity, there remains conspicuous the tradition that has been handed down from the Apostles through the Fathers and that forms part of the divinely revealed and undivided heritage of the universal Church.

The Second Vatican Council urged the Eastern Rite Churches to eliminate liturgical Latinization and to strengthen their Eastern Christian identity. In June 1999 the Council of Hierarchs of the Byzantine Metropolitan Church Sui Iuris of Pittsburgh USA promulgated the norms of particular law to govern itself. In January 2007, the Revised Divine Liturgy of St. John Chrysostom and the Revised Divine Liturgy of St. Basil the Great were promulgated. In December 2013, the Pope approved the request of the Congregation for the Eastern Churches that appropriate Eastern Church authorities be granted the faculty to allow pastoral service of Eastern married clergy also outside the traditional Eastern territory.

Membership within the Ruthenian Catholic Church, like the other sui iuris churches, is not limited to those who trace their heritage to the ethnic groups affiliated with the church.

As of 2016, the membership of the Ruthenian Greek Catholic Church was estimated at some 419,500 faithful, with seven bishops, 664 parishes, 557 priests, 76 deacons, and 192 men and women religious. The Church is not organised as a single synod. This is mainly because some of the priests and faithful of the Eparchy of Mukacheve desire that it should be part of the Ukrainian Greek Catholic Church.

• Sui juris (self governing)

• Metropolis of Pittsburgh

The canonical territory of the metropolis includes the whole of the United States of America and Canada. It was erected as a metropolis (archdiocese) by Pope Paul VI in 1969. The apostolic exarchate in Canada serves Slovak Greek Catholics.

• Immediately subject to the Holy See

• Greek Catholic Eparchy of Mukachevo in Ukraine (1771)
• Apostolic Exarchate of the Greek Catholic Church in the Czech Republic (1996)

• Blessed Theodore Romzha, bishop and martyr
• Blessed Teresa Demjanovich, nun

• History of Christianity in Ukraine
• Ruthenian Catholic Church (disambiguation)
• Slovak Greek Catholic Church
• Synod of Polotsk
• Union of Brest

People

• Andy Warhol
• Steve Ditko

General Information:

• Byzantine Catholic Church - The Carpathian Connection
• Byzantine Catholic Church in America (unofficial)
• What Is the Byzantine–Ruthenian Greek Catholic Church?
• Byzantine Catholics: Who are we? Archived 2016-12-20 at the Wayback Machine
• "Ruthenian Catholic Churches": article by Ronald Roberson (Catholic Near East Welfare Association)
• www.damian-hungs.de (in German)

History:

• Herbermann, Charles, ed. (1913). "Ruthenian Rite" . Catholic Encyclopedia. New York: Robert Appleton Company.
• Herbermann, Charles, ed. (1913). "Greek Catholics in America" . Catholic Encyclopedia. New York: Robert Appleton Company.

Eparchies:

• List of Ruthenian Eparchies
• (in Ukrainian) Мукачівська греко-католицька єпархія
• Byzantine Catholic Eparchy of Parma
• Byzantine Catholic Eparchy of Passaic
• (in Czech) Apoštolský exarchát řeckokatolické církve v České republice

Parishes:

• Directory of Byzantine-Ruthenian Parish web sites

Documents:

• Orientales Omnes Ecclesias: Encyclical of Pope Pius XII
• Orientalium Ecclesiarum: Second Vatican Council

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