| Church: | Church of Constantinople |
| Archbishop Of: | Ecumenical Patriarch of Constantinople |
| Term: | 1821 – 1822 |
| Predecessor: | Gregory V of Constantinople |
| Successor: | Anthimus III of Constantinople |
| Birth Date: | c. 1780 |
| Death Date: | 27 July 1822 |
Eugenius II (Greek: Εὐγένιος; 27 July 1822) was the Ecumenical Patriarch of Constantinople from 1821 until his death in 1822.[1] [2] Prior to his election as Patriarch, he was Archbishop of Anchialos in Bulgaria.
Eugenius was among the Archbishops held as hostages by Mahmud II along with Patriarch Gregory V when the Greek War of Independence broke out in 1821. On 10 April 1821, Gregory V was deposed and hanged by the Turks in the central gate of the Ecumenical Patriarchate. Archbishop Eugenius, still a prisoner at the time, was elected as the new Patriarch under the name Eugenius II.