| Church: | Church of Constantinople |
| Archbishop Of: | Ecumenical Patriarch of Constantinople |
| Term: | 7 October 1929 – 29 December 1935 |
| Predecessor: | Basil III of Constantinople |
| Successor: | Benjamin I of Constantinople |
| Birth Name: | Dimitrios Maniatis |
| Birth Date: | 1874 |
| Birth Place: | Prinkipos, Adalar, Istanbul, Ottoman Empire |
| Death Date: | 29 December 1935 |
Photios II (Greek, Modern (1453-);: Φώτιος Βʹ; born Dimitrios Maniatis, Δημήτριος Μανιάτης; 1874 – 29 December 1935) was Ecumenical Patriarch of Constantinople from 7 October 1929 until 26 December 1935.
He was born in 1874 and baptized as Dimitrios Maniatis. After finishing elementary education, he attended the Zariphios School in Philippopolis. He studied theology at the University of Athens and philosophy at the University of Munich. He spoke Greek, Turkish, Bulgarian, French and German fluently.
In 1902, he was ordained deacon. He remained in the Metropolis of Philippopolis, where he reached the rank of protosynkellos. Then was named Patriarchal Exarch of Philippopolis for the period 1906–1914.
In 1915, he was elected assistant bishop of Eirinoupolis.
On 7 October 1929, he was elected Ecumenical Patriarch and enthroned on the same day. During his Patriarchy, the relations between Greece and Turkey improved thanks to the political actions of Eleftherios Venizelos and Kemal Atatürk. The patriarch Photios II died on 29 December 1935.