|Latin: Pontificium Collegium Russicum Sanctae Theresiae a Iesu Infante|
|Congregation for the Oriental Churches|
|Rector||Tomás García-Huidobro Rivas, S.J.|
Via Carlo Cattaneo 2/A,
The Collegium Russicum (Latin : Pontificium Collegium Russicum Sanctae Theresiae A Iesu Infante; Russian : Папская коллегия Ру́ссикум; English: Pontifical Russian College of Saint Thérèse of the Child Jesus) is a Catholic college in Rome dedicated to studies of the culture and spirituality of Russia.
It is located near the Basilica di Santa Maria Maggiore, separated from the Pontifical Oriental Institute by the Church of Saint Anthony, and is known informally as the Russicum.
The college is built on the site of what was once a hospital, created by bequest in 1529, by Cardinal Pietro Capocci. From the middle of the 18th century the hospital was assigned to Camaldolese nuns, who kept it until it was confiscated by the government in 1871. In 1928 the church of Sant'Antonio Abate all'Esquilino and its surroundings were acquired by the Holy See, which assigned the church to Russian Catholics of the Byzantine Rite and the surrounding buildings to the Collegium Russicum. 
The Russicum, which was founded on August 15, 1929 by Pope Pius XI, was intended to train Russian Greek Catholic priests to serve as missionaries in the growing Russian diaspora of anti-communist political refugees,  and despite the anti-religious persecution taking place in the Soviet Union, in that very country. The money for both the college building and its reconstruction were taken from an aggregate of charity donations from faithful all over the world on the occasion of the canonization of St. Thérèse de Lisieux, placing the Russicum under her patronage.
The Collegium Russicum is run by the Society of Jesus and provides education and accommodation for Catholic and Orthodox students.
1. Vendelín Javorka, S.J. (1929-1936), Slovak
2. Philippe de Régis, S.J. (1936-1942), French
3. Francisco Echarri, S.J. (1942-1946), Spanish-Basque, Vice-Rector
4. Philippe de Régis, S.J. (1946-1948), French
5. Gustav Andrej Wetter, S.J. (1948-1955), Austrian
 6. Bohumíl-Feofil Horáček, S.J. (1955-1962), Czech
7. Josef Olšar, S.J. (1962-1967), Czech
8. Paul Mailleux, S.J. (1967-1978), Belgian
9. Gino-Kirill Piovesan, S.J. (1978-1985), Italian
10. Josef Macha, S.J. (1985-1991), German
11. John Long, S.J. (1991-1996), American
12. Richard Čemus, S.J. (1996-2001), Czech
13. Alojzij Cvikl, S.J. (2001-2010), Slovene
14. Lionginas Virbalas, S.J. (2010-2013), Lithuanian
15. Anto Lozuk, S.J. (2013-2017), Croat
16. Peter Dufka, S.J. (2017-2019), Slovak, Vice-Rector
17. Tomás García-Huidobro Rivas, S.J. (2019-), Chilean
The Eastern Catholic Churches or Oriental Catholic Churches, also called the Eastern-Rite Catholic Churches, Eastern Rite Catholicism, or simply the Eastern Churches, are 23 Eastern Christian autonomous particular churches of the Catholic Church, in full communion with the Pope in Rome. Although they are distinct theologically, liturgically, and historically from the Latin Church, they are all in full communion with it and with each other. Eastern Catholics are a distinct minority within the Catholic Church; of the 1.3 billion Catholics in communion with the Pope, approximately 18 million are members of the eastern churches.
The Ruthenian Greek Catholic Church, also known in the United States simply as the Byzantine Catholic Church, is an Eastern Catholic church that uses the Byzantine Rite for its liturgies, laws, and cultural identity. It is one of the 23 sui juris Eastern Catholic churches that are in full communion with the Holy See and the rest of the Catholic Church. There are significant, culturally distinct communities in the United States, Canada, and Europe. In the United States, the Byzantine Catholic Metropolitan Church of Pittsburgh is self-governing. In Europe, Ruthenian jurisdictions are exempt, i.e. dependent directly on the Holy See. The European branch has an eparchy in Ukraine and another in the Czech Republic.
The Pontifical Croatian College of St. Jerome is a Catholic college, church and a society in the city of Rome intended for the schooling of South Slav clerics. It is named after Saint Jerome. Since the founding of the modern college in 1901, it has schooled 311 clerics from all bishoprics of Croatia.
The Russian Greek Catholic Church, Russian Byzantine Catholic Church or simply Russian Catholic Church, is a sui iuris Byzantine Rite Eastern Catholic jurisdiction of the worldwide Catholic Church. Historically, it represents the first reunion of members of the Russian Orthodox Church with the Catholic Church. It is in full communion with and subject to the authority of the Pope of Rome as defined by Code of Canons of the Eastern Churches.
Walter Joseph Ciszek, S.J. was a Polish-American Jesuit priest of the Russian Greek Catholic Church who conducted clandestine missionary work in the Soviet Union between 1939 and 1963.
Sant'Eusebio is a titular church in Rome, devoted to Saint Eusebius of Rome, a 4th-century martyr, and built in the Esquilino rione. One of the oldest churches in Rome, it is a titular church and the station church for the Friday after the fourth Sunday in Lent.
The Greek Catholic Church in Slovakia, or Byzantine Catholic Church in Slovakia, is a metropolitan sui iuris Eastern Catholic particular church in full communion with the Catholic Church and the Pope of Rome. Its liturgical rite is the Byzantine Rite. In 2008 in Slovakia alone, the Greek Catholic Church in Slovakia had some 350,000 faithful, 374 priests and 254 parishes. In 2017, the Catholic Church counted 207,320 Greek Catholics in Slovakia worldwide, representing roughly one percent of all Eastern Catholics.
The Roman Colleges, also referred to as the Pontifical Colleges in Rome, are institutions established and maintained in Rome for the education of future ecclesiastics of the Catholic Church. Traditionally many were for students of a particular nationality. The colleges are halls of residence in which the students follow the usual seminary exercises of piety, study in private, and review the subjects treated in class. In some colleges there are special courses of instruction but the regular courses in philosophy and theology are given in a few large central institutions, such as Pontifical Urbaniana University, the Pontifical Gregorian University, the Pontifical Lateran University, and the Pontifical University of Saint Thomas Aquinas, Angelicum.
Alexander Nikolaevich Evreinov was a Russian bishop, who converted to Russian Greek Catholic Church from Russian Orthodoxy. Being a citizen with a noble origin in Saint Petersburg, Evreinov was a member of the Foreign Affairs department of the Russian nation before his conversion to the Catholic faith and ordination to the priesthood. His consecration as a Catholic bishop of the Byzantine tradition was only formal, because Evreinov did not have any jurisdiction among Russian Catholics neither in the Soviet Union nor in the Russian diaspora. Evreinov was a member of the Russian Apostolate.
Sergiy Verigin was a Russian Orthodox convert to Catholicism. Initially ordained an Orthodox clergyman, in 1907 Verigin changed his religious position united himself to Catholic faith. From 1910 to 1929 was a priest who celebrated Mass in a Russian Catholic church in Rome and participated as a member of Pro Russia movement, however maintaining pessimistic views in relation to Russian Orthodoxy union with Catholic Church. Verigin died in 1938.
Pietro Leoni was an Italian priest of the Society of Jesus and the Russian Greek Catholic Church. His memoir of surviving the Gulag, Spio dei Vaticano, was published after his return to the West.
Milan Šašik CM was a Ruthenian Catholic hierarch, from Slovakia, who served as Bishop of the Eparchy of Mukachevo, in Ukraine.
George Kovalenko, SJ was a Russian Jesuit, a priest of the Catholic Church and a member of the Russian apostolate.
Sant'Antonio abate all’Esquilino is a church in Rome, located near the Basilica of Santa Maria Maggiore on via Carlo Alberto in the Esquilino district.
The Pontifical Greek College of St. Athanasius is a Pontifical College in Rome that observes the Byzantine rite.
ThDr. PaedDr. Mgr. art. Peter Dufka, PhD, SJ is Slovak Roman Catholic priest, Professor at the Pontifical Oriental Institute in Rome, Radio Vatican co-worker and Pro-Rector of Collegium Russicum.
Ján Kellner was a Slovak Catholic priest, missionary to USSR, executed during Stalinism in 1941.
Milan Lach, SJ is a Slovak Catholic bishop current appointed as an auxiliary bishop for the Eparchy of Bratislava of the Slovak Greek Catholic Church. He was previously the Eparchal Bishop of Parma in the Ruthenian Greek Catholic Church.
Archbishop Alojzij Cvikl, S.J. is a Slovenian Roman Catholic prelate who serves as an Archbishop of Archdiocese of Maribor since 14 March 2015.
Coordinates: 41°53′49″N12°30′02″E / 41.89694°N 12.50056°E