As he walked by the Sea of Galilee, he saw two brothers, Simon, who is called Peter, and Andrew his brother, casting a net into the lake—for they were fishermen. And he said to them, ‘Follow me, and I will make you fish for people.’ Immediately they left their nets and followed him. (Matthew 4:18-20)

When the Most High came down and confused the tongues, He parted the nations.  When He divided the tongues of fire, He called all to unity; thus with one voice we glorify the all-Holy Spirit.

– Eastern Rite Pentecostal Mass

Urbi et Orbi Communications collaborates with the Orthodox Churches in Istanbul, Russia and Europe in holding joint cultural/spiritual events, exchanges of seminarians, charitable projects and seminars to promote unity. We work with Patriarchates of the Eastern-rite Catholic churches to join hands with them and their Orthodox counterparts in heavily Orthodox countries to facilitate educational and humanitarian projects. And we work with our own Latin Catholic Church officials, both at the Vatican’s Council for Christian Unity and around the world, on efforts to reach out to Orthodox Church officials and interested lay people alike. 


The single largest Church in the Christian world, with 1.3 Billion adherents globally.

Latin Rites

Roman Rite

Ambrosian Rite

Mozarabic Rite

Anglican Usage Rite

Carthusian Rite

Carmelite Rite

Dominican Rite

Eastern Rites

Alexandrian Rite

  • Coptic Church (Patriarchal)
  • Ethiopic Church (Archiepiscopal)

Antiochian Rite

  • Maronite Church (Patriarchal)
  • Syro-Malankar (Major Archiepiscopal)
  • Syrian Church (Patriarchal)

Armenian Rite

  • Armenian Church

Chaldean or Syro-Oriental Rite

  • Chaldean Church (Patriarchal)
  • Syro-Malabar Church (Major Archiepiscopal)

Constantinian or Byzantine Rite

  • Albanese Church
  • Belarussian Church
  • Bulgarian Church
  • Croatian Church (Episcopal)
  • Greek Church
  • Greek-Melkite Church (Patriarchal)
  • Hungarian Church (Episcopal)
  • Italo-Albanese Church (Episcopal)
  • Macedonian Church
  • Romanian Church (Major Archiepiscopal)
  • Russian Church
  • Ruthenian Church (Archiepiscopal)
  • Slovak Church (Archiepiscopal)
  • Ukrainian Church (Major Archiepiscopal)

More on Catholic Churches

Eastern Catholics statistics:


The Orthodox Church, with 270 million adherents, is a communion comprising of the fifteen separate autocephalous hierarchical churches that recognize each other as “canonical” Orthodox Christian churches.

Autocephalous Orthodox Churches

Ranked in order of seniority, with the year of independence (autocephaly) given in the parenthesis.

Four Ancient Patriarchates

  • Ecumenical Patriarchate of Constantinople
  • Greek Orthodox Church of Alexandria
  • Greek Orthodox Church of Antioch
  • Greek Orthodox Church of Jerusalem

Junior Patriarchates

  • Russian Orthodox Church (1448, recognized in 1589)
  • Georgian Orthodox and Apostolic Church (486)
  • Bulgarian Orthodox Church (870)
  • Serbian Orthodox Church (1219)
  • Romanian Orthodox Church (1872, recognized in 1885)

Autocephalous Archbishoprics

  • Church of Cyprus (431, recognized in 478)
  • Church of Greece (1833, recognized in 1850)
  • Albanian Orthodox Church (1922, recognized in 1937)
  • Polish Orthodox Church (1924)
  • Czech and Slovak Orthodox Church (1951)

The Orthodox Church in America (1970, autocephaly not universally recognized)

The four ancient patriarchates are most senior, followed by the five junior patriarchates.  Autocephalous archbishoprics follow the patriarchates in seniority, with the Church of Cyprus being the only ancient one (AD 431).

More on Orthodox Churches

Orthodox statistics:
“Along this path, we are sustained by the powerful intercession and example of the martyrs. May we continue to advance together on our journey toward the same Eucharistic table, and grow in love and reconciliation,” – Pope Francis