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Polycarpus I of Byzantium
Bishop of Byzantium
Term ended89
Personal details
DenominationEarly Christianity

Polycarpus I (Greek: Πολύκαρπος Αʹ), (? – 89) was a bishop of Byzantium. He succeeded Bishop Onesimus in 69 AD, and served in that office until his death in 89 AD. His last eight years of office (from 81 AD) were during Emperor Domitian's persecution of the Christians.[1] His relics are deposited in the Cathedral of Argyropolis.


  1. ^ "Polycarpus". Official site of the Ecumenic Patriarchate of Constantinople. Retrieved 2 April 2011.
Titles of the Great Christian Church Preceded byOnesimus Bishop of Byzantium 69–89 Succeeded byPlutarch