Thomas I of Constantinople

Thomas I of Constantinople (Greek: Θωμᾶς; died 21 March 610) was the Ecumenical Patriarch of Constantinople from 607 to 610. He has been canonised a saint in the Eastern Orthodox Church. His feast day is 21 March for those churches which follow the Julian Calendar, 21 March falls on 3 April of the modern Gregorian Calendar).

Thomas I of Constantinople
Ecumenical Patriarch of Constantinople
Installed	23 January 607
Term ended	21 March 610
Predecessor	Cyriacus II of Constantinople
Successor	Sergius I of Constantinople
Personal details
Died	21 March 610
Denomination	Chalcedonian Christianity
Sainthood
Feast day	3 April (21 March)