Theophanes I of Constantinople (Greek: Θεοφάνης; died 26 March 1597) was Ecumenical Patriarch of Constantinople from August 1596 to February 1597. He died only three weeks after leaving office. He was previously the metropolitan of Philippopolis, a protopsaltes and composer of hymns.

• Venance Grumel, Traité d'études byzantines, vol. I - La chronologie, Presses universitaires de France, Paris, 1958, p. 438.
• Nicolas Viton de Saint-Allais, L'art de vérifier les dates, tome I, Paris, 1818, p. 494.

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