Seraphim I of Constantinople

{{Short description|Ecumenical Patriarch of Constantinople from 1733 to 1734}}

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

{{Infobox patriarch

| name = Seraphim I of Constantinople

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| church = Church of Constantinople

| archbishop_of = Ecumenical Patriarch of Constantinople

| enthroned = March 1733

| ended = September 1734

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| predecessor = Jeremias III of Constantinople

| successor = Neophytus VI of Constantinople

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| religion = Eastern Orthodoxy

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Seraphim I of Constantinople ({{langx|grc|Σεραφείμ}}; fl. 18th century) served as Ecumenical Patriarch of Constantinople in 1733–1734 in succession to Jeremias III of Constantinople.