Thomas I of Constantinople
| 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) | 
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).