The Metropolis of Derkoi (Greek: Ἱερὰ Μητρόπολις Δέρκων) is a residential see of the Eastern Orthodox Church subject to the Ecumenical Patriarch of Constantinople and situated in the Istanbul suburb of Yesilköy (historically San Stefano). The cathedral is that of St. Parakevi in Therapia (Tarabya). The metropolitan is a member of the Patriarchal Synod. The present Metropolitan is Apostolos Daniilidis.