Cosmas III of Constantinople
| Cosmas III of Constantinople | |
|---|---|
| Ecumenical Patriarch of Constantinople | |
| Church | Church of Constantinople | 
| In office | 28 February 1714 – 23 March 1716 | 
| Predecessor | Cyprianus of Constantinople | 
| Successor | Jeremias III of Constantinople | 
| Personal details | |
| Died | 1736 | 
| Denomination | Eastern Orthodoxy | 
Cosmas III of Constantinople (Greek: Κοσμᾶς; died 1736) was the Ecumenical Patriarch of Constantinople from 28 February 1714 to 23 March 1716.