Patriarch Athenagoras (born Aristokles Spyrou) (March 25, 1886 - July 6/7, 1972) was the Patriarch of Constantinople from 1948 to 1972.

He was born in Tsaraplana , Epirus. His meeting with Pope John XXIII and Paul VI (1964) in the Second Vatican Council led to rescinding the 1054 excommunications of the Great Schism. This was a significant step towards restoring full communion between Rome and Constantinople.

He died in Istanbul.

See also: Eastern Orthodoxy - Michael Cerularius

Preceded by: Maximus V

List of Constantinople patriarchs

Followed by: Demetrius I