Compare
Catholic ChurchandEastern Catholic Churches
At a glance
- Common groundIn full: Common ground
- One Catholic Church: full communion with the Bishop of Rome, the same faith and the same sacraments.
Source
- One Catholic Church: full communion with the Bishop of Rome, the same faith and the same sacraments.
- What distinguishes themIn full: What distinguishes them
- Liturgy and law: the Roman Rite and Latin code; five Eastern liturgical traditions and the Eastern code.
2 sources
- The 23 Eastern Catholic Churches: ancient traditions in communion with RomeSource verified
- Code of Canons of the Eastern Churches (CCEO)Identified, not independently read
- Many Eastern Catholic churches ordain married men as priests.
2 sources
- Catechism of the Catholic Church, ¶¶1577–1580 (who can receive Holy Orders), ¶1580Source verified
- Code of Canons of the Eastern Churches (CCEO)Identified, not independently read
- Liturgy and law: the Roman Rite and Latin code; five Eastern liturgical traditions and the Eastern code.
- How their histories connectIn full: How their histories connect
- Most came from unions of parts of Eastern churches with Rome (1596–1930); some never broke communion.
Source
- Ecclesial union · Various, 16th–20th centuries · A gradual processUnions with RomeRead the account in Eastern Catholic Churches
- Most came from unions of parts of Eastern churches with Rome (1596–1930); some never broke communion.
- Connected today?In full: their relationship today
Parts of one churchas of September 2026
Parts of one church of 24 churches sui iuris: the Latin Church and 23 Eastern churches.
Source
A summary of the researched comparison below; each point links to its evidence.
Researched comparison. Written for this pair from sourced research; each statement links to its evidence. Eastern Catholic Churches is counted within Catholic Church. This compares a church with the wider body it belongs to.
2 sources
Where they differ
- Liturgy and law. The Latin Church follows the Roman Rite and the Code of Canon Law; the 23 Eastern churches follow five liturgical traditions (Alexandrian, Antiochene, Armenian, Chaldean and Byzantine) and the Code of Canons of the Eastern Churches.
2 sources
- The 23 Eastern Catholic Churches: ancient traditions in communion with RomeSource verified
- Code of Canons of the Eastern Churches (CCEO)Identified, not independently read
- Married priests. Many Eastern Catholic churches ordain married men as priests, following Eastern tradition; in the Latin Church priests are normally celibate.
2 sources
- Catechism of the Catholic Church, ¶¶1577–1580 (who can receive Holy Orders), ¶1580Source verified
- Code of Canons of the Eastern Churches (CCEO)Identified, not independently read
Not yet comparable (3)
No sourced position is recorded for one side, so the Atlas does not say whether they agree:
- Creeds and councils (the filioque): not recorded for Eastern Catholic Churches
- Salvation and grace (characteristic emphasis): not recorded for Eastern Catholic Churches
- Sacraments and ordinances (how christ's presence is explained): not recorded for Eastern Catholic Churches
How their histories relate
Source
Ecclesial union · Various, 16th–20th centuriesA gradual process
Part of one church enters communion with another while keeping its own liturgy, hierarchy and law.
The 23 Eastern Catholic churches did not form through one event. Several came from unions of parts of Eastern churches with Rome (the Union of Brest, 1596; Uzhhorod, 1646; the Melkite patriarchate, 1724; the Syro-Malankara Church, 1930); the Maronites and Italo-Albanians describe themselves as never having broken communion.Read in Eastern Catholic Churches historySource
Their relationship today
Parts of one churchas of September 2026
Source
Based on Unions with Rome
Developments towards reconciliation
No documented agreement or formal dialogue between these traditions is recorded in the Atlas.
Explore further
Catholic Church
All citations link to the Atlas’s single source register.