Fourth Council of Constantinople (Eastern Orthodox)

Fourth Council of Constantinople
Date	879–880
Accepted by	Eastern Orthodoxy
Previous council	Second Council of Nicaea
Next council	Fifth Council of Constantinople
Convoked by	Emperor Basil I
Attendance	383 bishops
Topics	Photius' patriarchate
Documents and statements	Restoration of Photius, protection of Nicene creed
Chronological list of ecumenical councils

Eastern Orthodox Church
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Overview
Structure Theology (History of theology) Liturgy Church history Holy Mysteries View of Salvation View of Mary View of icons
Background Crucifixion / Resurrection / Ascension of Jesus Christianity Christian Church Apostolic succession Four Marks of the Church Orthodoxy
Organization Autonomy Autocephaly Patriarchate Ecumenical Patriarch Episcopal polity Canon law Clergy Bishops Priests Deacons Monasticism Degrees Bratstvo
Autocephalous jurisdictions Autocephalous Churches who are officially part of the communion: Constantinople Alexandria Antioch Jerusalem Russia Serbia Romania Bulgaria Georgia Cyprus Greece Poland Albania Czech Lands and Slovakia Autocephaly recognized by some autocephalous Churches de jure: America North Macedonia Autocephaly and canonicity recognized by Constantinople and 3 other autocephalous Churches: Ukraine (OCU) Spiritual independence recognized by Georgian Orthodox Church: Ukraine (UOC)
Autonomous jurisdictions Sinai (JP) Finland (EP) Estonia (EP) Japan (MP) China (MP) Americas (RP) Bessarabia (RP) Moldova (MP) Semi-Autonomous: Crete (EP) Estonia (MP) ROCOR (MP)
Episcopal assemblies Australia, New Zealand, and Oceania Austria Belgium, Holland, and Luxembourg Canada France Germany Great Britain and Ireland Italy and Malta Latin America Scandinavia Spain and Portugal Switzerland and Liechtenstein United States of America
Noncanonical jurisdictions Old Believers Spiritual Christianity True Orthodoxy Catacomb Church Old Calendarists American Orthodox Catholic Church American World Patriarchs National churches: Abkhazia Belarus Italy Latvia Montenegro Turkey UOC–KP Evangelical Orthodox
Ecumenical councils First Seven Ecumenical Councils: Nicaea I Constantinople I Ephesus Chalcedon Constantinople II Constantinople III Nicaea II Other possible ecumenical councils: Constantinople IV Constantinople V Other important councils: Quinisext Council Jassy Moscow Jerusalem Constantinople (1872)
History Church Fathers Pentarchy Byzantine Empire Christianization of Georgia Christianization of Bulgaria Christianization of Kievan Rus' Great Schism Russia Ottoman Empire North America Moscow–Constantinople schism 15th–16th c. 1996 2018
Theology History of Eastern Orthodox theology (20th century (Neo-Palamism)) Apophaticism Chrismation Contemplative prayer Essence vs. Energies Hesychasm Holy Trinity Hypostatic union Icons Metousiosis Mystical theology Nicene Creed Nepsis Oikonomia vs Akribeia Ousia Palamism Philokalia Phronema Sin Theosis Theotokos Differences from the Catholic Church Opposition to the Filioque Opposition to papal supremacy
Liturgy and worship Divine Liturgy Divine Services Akathist Apolytikion Artos Ectenia Euchologion Holy Water Iconostasis Jesus Prayer Aprakos Kontakion Liturgical entrances Liturgical fans Lity Memorial service Memory Eternal Omophorion Eastern Orthodox bowing Eastern Orthodox marriage Praxis Paraklesis Paschal greeting Paschal Homily Paschal troparion Prayer rope Prosphora Russian bell ringing Semantron Sign of the cross Sticheron Troparion Vestments Use of incense
Liturgical calendar Paschal cycle 12 Great Feasts Other feasts: Feast of Orthodoxy Intercession of the Theotokos The four fasting periods: Nativity Fast Great Lent Apostles' Fast Dormition Fast
Major figures Saints (Russian (until 15th century), Russian (post-15th century), Serbian, American) Justin Martyr Athanasius of Alexandria Ephraim the Syrian Basil of Caesarea Cyril of Jerusalem Gregory of Nazianzus Gregory of Nyssa John Chrysostom Cyril of Alexandria John Climacus Maximus the Confessor John of Damascus Theodore the Studite Kassia Cyril and Methodius Photius I of Constantinople Vladimir the Great Sava I of Serbia Gregory Palamas Innocent of Alaska
Other topics Architecture Folk Encyclical of the Eastern Patriarchs Cross Saint titles Statistics by country

The Fourth Council of Constantinople was held in 879–880. It confirmed the reinstatement of Photius I as patriarch of Constantinople.

The result of this council is accepted by the Eastern Orthodox as having the authority of an ecumenical council. Eastern Orthodox sometimes call it the eighth ecumenical council.