Church Councils

Ecumenical Councils of the Catholic Church

First Ecumenical Council – Nice I

Year: 325 

Second Ecumenical Council – Constantinople I

Year: 381

Third Ecumenical Council – Ephesus
Year: 431 

Fourth Ecumenical Council – Chalcedon
Year: 451 

Fifth Ecumenical Council – Constantinople II
Year: 553 

Sixth Ecumenical Council – Constantinople III
Years: 680-681 

Seventh Ecumenical Council – Nice II
Year: 787 

Eighth Ecumenical Council – Constantinople IV
Year: 869 

Ninth Ecumenical Council – Lateran Council I 
Year: 1123 

Tenth Ecumenical Council – Lateran Council II 
Year: 1139 

Eleventh Ecumenical Council – Lateran Council III 
Year: 1179 

Twelfth Ecumenical Council – Lateran Council IV 
Year: 1215 

Thirteenth Ecumenical Council – First Council of Lyons 
Year: 1245 

Fourteenth Ecumenical Council – Second Coucil of Lyons 
Year: 1274

Fifteenth Ecumenical Council Council of Vienne 
Years: 1311-1313 

Sixteenth Ecumenical Council – Constance
Years: 1414-1418 

Seventeenth Ecumenical Council:
Basle – 1431-37
Ferrara/Florence – 1438-45

Eighteenth Ecumenical Council – LATERAN COUNCIL V
Years: 1512-1517 

Nineteenth Ecumenical Council – Trent
Years: 1545-1563 

Twentieth Ecumenical Council – Vatican I
Years: 1869-1870 

Twenty First Ecumenical Council – Vatican II
Years: 1962-1965


Non-Ecumenical Councils/Synods

Decrees of the Eastern Orthodox Synod of Jerusalem
Year: 1672

(More to come)

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