This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Eugenius I of Byzantium" – news · newspapers · books · scholar · JSTOR (October 2019) (Learn how and when to remove this template message)

Eugenius I of Byzantium
Bishop of Byzantium
Installed	237
Term ended	242
Personal details
Denomination	Early Christianity

Eugenius I (Greek: Εὐγένιος; died 242) was Bishop of Byzantium from 237 to 242.

Preceded byCastinus of Byzantium Bishop of Byzantium 237–242 Succeeded byTitus of Byzantium

v t e Bishops of Byzantium and Patriarchs of Constantinople
Bishops of Byzantium (Roman period, 38–330 AD)	Andrew Stachys Onesimus Polycarpus I Plutarch Sedecion Diogenes Eleutherius Felix Polycarpus II Athenodorus Euzois Laurence Alypius Pertinax Olympianus Marcus I Philadelphus Cyriacus I Castinus Eugenius I Titus Dometius Rufinus Probus Metrophanes Alexander
Archbishops of Constantinople (Roman period, 330–451 AD)	Alexander Paul I Eusebius Macedonius I Eudoxius Evagrius Demophilus Maximus I Gregory I Nectarius John I Chrysostom Arsacius Atticus Sisinnius I Nestorius Maximianus Proclus Flavian Anatolius
Patriarchs of Constantinople (Byzantine period, 451–1453 AD)	Anatolius Gennadius I Acacius Fravitta Euphemius Macedonius II Timothy I John II Epiphanius Anthimus I Menas Eutychius John III John IV Cyriacus II Thomas I Sergius I Pyrrhus Paul II Peter Thomas II John V Constantine I Theodore I George I Paul III Callinicus I Cyrus John VI Germanus I Anastasius Constantine II Nicetas I Paul IV Tarasius Nicephorus I Theodotus I Antony I John VII Methodius I Ignatios Photios I Stephen I Antony II Nicholas I Εuthymius I Stephen II Tryphon Theophylact Polyeuctus Βasil I Αntony III Nicholas II Sisinnius II Sergius II Eustathius Alexius Michael I Constantine III John VIII Cosmas I Eustratius Nicholas III John IX Leo Michael II Cosmas II Nicholas IV Theodotus II Neophytus I Constantine IV Luke Michael III Chariton Theodosius I Basil II Nicetas II Leontius Dositheus George II John X Michael IV^† Theodore II^† Maximus II^† Μanuel I^† Germanus II^† Methodius II^† Manuel II^† Arsenius^† Nicephorus II^† Germanus III Joseph I John XI Gregory II Athanasius I John XII Nephon I John XIII Gerasimus I Isaias John XIV Isidore I Callistus I Philotheus Macarius Nilus Antony IV Callistus II Matthew I Euthymius II Joseph II Metrophanes II Gregory III Athanasius II
Patriarchs of Constantinople (Ottoman period, 1453–1923 AD)	Gennadius II Isidore II Joasaph I Sophronius I Mark II Symeon I Dionysius I Raphael I Maximus III Nephon II Maximus IV Joachim I Pachomius I Theoleptus I Jeremias I Joannicius I Dionysius II Joasaph II Metrophanes III Jeremias II Pachomius II Theoleptus II Matthew II Gabriel I Theophanes I Meletius I Neophytus II Raphael II Cyril I Timothy II Gregory IV Anthimus II Cyril II Athanasius III Neophytus III Parthenius I Parthenius II Joannicius II Cyril III Paisius I Parthenius III Gabriel II Parthenius IV Dionysius III Clement Methodius III Dionysius IV Gerasimus II Athanasius IV James Callinicus II Neophytus IV Gabriel III Neophytus V Cyprianus Athanasius V Cyril IV Cosmas III Jeremias III (Callinicus III) Paisius II Seraphim I Neophytus VI Cyril V Callinicus IV (III) Seraphim II Joannicius III Samuel Meletius II Theodosius II Sophronius II Gabriel IV Procopius Neophytus VII Gerasimus III Gregory V Callinicus V (IV) Jeremias IV Cyril VI Eugenius II Anthimus III Chrysanthus Agathangelus Constantius I Constantius II Gregory VI Anthimus IV Anthimus V Germanus IV Meletius III Anthimus VI Cyril VII Joachim II Sophronius III Joachim III Joachim IV Dionysius V Neophytus VIII Anthimus VII Constantine V Germanus V Meletius IV
Patriarchs of Constantinople (Turkish period, since 1923 AD)	Gregory VII Constantine VI Basil III Photius II Benjamin Maximus V Athenagoras Demetrius Bartholomew
^† in exile at Nicaea Christianity portal