Check.Church

Armenian Apostolic Church

Oriental Orthodox · 301 · Armenia; worldwide diaspora

The world's first national church (301), apostolic by tradition through Thaddeus and Bartholomew, kept through persecution and genocide; its catholicos of All Armenians at Etchmiadzin heads a communion-member church inseparable from Armenian identity.

Armenian Apostolic Church was formed in 301. Armenian Apostolic Church continues today. Armenian Apostolic Church's institutional line runs back through Oriental Orthodoxy to the post-apostolic church. No body on this tree is the assembly of Acts 2; where a body claims that, the claim appears in the claimed-lineage layer.

Between the post-apostolic church and Armenian Apostolic Church stand 1 division along the institutional line, counting separations and disputed forks, not mergers, renewals or national organizations.

At a glance

Formed
In 301
Family
Oriental Orthodox
Region
Armenia; worldwide diaspora
Key figures
Gregory the Illuminator
Cause tags
Doctrine, Geography
Also known as
Armenian Church

What it was organized out of

On the tree

Armenian Apostolic Church and its institutional line back to the post-apostolic churchAD 33The church at Pentecost: On divine groundThe church at Pentecost: on divine groundtoday100301424431451The post-apostolic church (The spine)The post-apostolicchurchDepartureArmenian Apostolic Church (Oriental Orthodox)Armenian ApostolicChurchOriental OrthodoxChurch of the East (Church of the East)Church of the EastChurch of the EastThe conciliar church (The spine)The conciliar churchDepartureThe Chalcedonian church (The spine)The Chalcedonian churchDepartureOriental Orthodoxy (Oriental Orthodox)Oriental OrthodoxyOriental Orthodox

Solid lines are separations and unions; dashed lines are renewals that began inside a body; dotted gray lines are national organizations of one communion; a diamond marks a fork event where neither side is drawn as the one that left. Every line runs back to the post-apostolic church; no body descends from the assembly of Acts 2. Dashed gray boxes mark the institutional line after the apostles, shown as departure; no line of descent is drawn from Pentecost. A verdict appears on a box once its section is published.

Claimed lineage

What this tradition says about its own origin · apostolic see

The Armenian church was founded by the apostles Thaddeus and Bartholomew (tradition); Armenia became the first Christian nation in 301.

Its own sources: Armenian patriarchal tradition.

The documented record: The 301 establishment is documented history; the first-century apostolic founding is tradition — the card distinguishes the two.

Sources

Research compiled July 2026. Page data built 2026-10-31.