Evagrius of Constantinople

{{Short description|Archbishop of Constantinople in 370}}

{{One source|date=October 2024}}

{{Use dmy dates|date=January 2025}}

{{Infobox patriarch

| name = Evagrius of Constantinople

| patriarch_of = Archbishop of Constantinople

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| enthroned = 370

| ended = 370

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| predecessor = Demophilus of Constantinople

| successor = Maximus I of Constantinople

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| death_date = {{circa}} 380

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| religion = Nicene Christianity

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Evagrius of Constantinople ({{langx|el|Εὐάγριος}}; died {{circa}} 380) was the archbishop of Constantinople for a brief period in 370.

In 370, the Arians elected Demophilus of Constantinople to fill the bishopric vacancy after the death of Eudoxius of Antioch. The Nicene Christians and the deposed bishop of Antioch Eustathius of Antioch chose Evagrius for that see;{{Cite book |author=Eusebius |title=Hist. Eccl. |url=http://www.newadvent.org/fathers/250104.htm |volume=IV |chapter=14 - The Arians ordain Demophilus after the Death of Eudoxius at Constantinople; but the Orthodox Party constitute Evagrius his successor.}} but a few months later he was banished by the Roman emperor Valens, and remained in exile until his death.{{Cite book |author=Eusebius |author-link=Eusebius |title=Hist. Eccl. |url=http://www.newadvent.org/fathers/250104.htm |volume=IV |chapter=15 - The Emperor banishes Evagrius and Eustathius. The Arians persecute the Orthodox.}}

Some sources claim that he was elected a second time in 379 or 380, after the expulsion of Demophilus by emperor Theodosius I{{Citation needed|date=January 2011}}.