John VIII of Constantinople
- Patriarch John VIII redirects here. There were also a Syriac Patriarch John VIII of Antioch (who ruled in 1049–1057) and a Patriarch John VIII of the Maronites.
This article is about the Patriarch of Constantinople. For his nephew, the Byzantine historian, see John Xiphilinus.
John VIII Xiphilinos (Greek: Ιωάννης Η΄ Ξιφιλίνος), a native of Trebizond, was patriarch of Constantinople from 1064–1075. He was the uncle of John Xiphilinos the Epimator. John VIII also wrote a hagiography of Saint Eugenios of Trebizond.
- William Miller, Trebizond: The last Greek Empire of the Byzantine Era: 1204-1461, 1926 (Chicago: Argonaut, 1969), p. 11
|Eastern Orthodox Church titles|
Constantine III Leichoudes
|Patriarch of Constantinople
| Succeeded by|