Nicetas of Medikion was an 8th-century Byzantine monk and abbot who became a prominent figure for his opposition to iconoclasm. Born in Bithynian Caesarea, he was raised by his grandmother after his mother's death. He eventually became the leader of the Medikion Monastery, where his devotion attracted many followers. Due to his refusal to accept iconoclastic doctrines, he faced imprisonment and exile during the reign of Leo V, eventually spending his final years in an ascetic life near Constantinople.