Callinicus I of Constantinople

Kallinikos I (Greek: Καλλινίκος; died 23 August 705) was the Ecumenical Patriarch of Constantinople from 693 to 705.

Callinicus helped to depose Emperor Justinian II and place Leontius on the Byzantine throne.

Upon Justinian's triumphant return to Constantinople and reinstatement as Emperor, Callinicus was arrested and blinded before being imprisoned in a monastery.

He is recognized as a saint by the Eastern Orthodox Church; his feast day is celebrated on 23 August.