Knowra Bartholomew I of Constantinople Bartholomew I of Constantinople Bartholomew I is the Ecumenical Patriarch of Constantinople, elected in 1991. He serves as spiritual leader of the Eastern Orthodox Church and primate of the Ecumenical Patriarchate.
Dimitrios I of Constantinople : Ecumenical Patriarch from 1972 to 1991, preceding Bartholomew I. He appointed Bartholomew metropolitan and was the patriarch whose death opened the succession.
Ecumenical Patriarchate of Constantinople : The Orthodox church centered in Constantinople, led by the Ecumenical Patriarch. This institution is the office Bartholomew heads and the setting for his governance.
Green Patriarch : A title associated with Bartholomew's sustained advocacy for ecological responsibility. His environmental work earned this name and brought ecological concerns into Orthodox public life.
Imbros : A Greek island in the northeastern Aegean Sea, officially named Gökçeada in Turkey. Bartholomew was born there in 1940, when its Greek community remained substantial.
John Zizioulas : A Greek Orthodox theologian and metropolitan known for work on ecclesiology and personhood. His theology shaped Orthodox discussions of primacy and the church during Bartholomew's patriarchate.
Eastern Orthodox Church : A communion of self-governing churches sharing Orthodox doctrine, worship, and sacramental life. Bartholomew's spiritual leadership operates within this communion, whose churches retain substantial autonomy.
Religion and environmentalism : The relationship between religious beliefs, institutions, and responses to environmental problems. Bartholomew has used religious teaching and public events to promote ecological action.
Halki Seminary : A Greek Orthodox theological school on Heybeliada, an island near Istanbul. Bartholomew studied theology there before pursuing further education abroad.
Pope Francis : Head of the Catholic Church from 2013 until his death in 2025. His meetings with Bartholomew advanced Catholic–Orthodox dialogue and joint environmental advocacy.
Pentarchy : The historical ordering of five ancient patriarchal sees in Christian ecclesiology. It provides historical context for Constantinople's rank among Orthodox patriarchates.
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