Ieronymos I (Greek: Ιερώνυμος Α´ Ierōnymos; Latin: Hieronymus I; English: Jerome I; 1905 – 15 November 1988) was a Greek monk and theologian who served as the Archbishop of Athens and All Greece and as such the primate of the Autocephalous Orthodox Church of Greece in 1967–1973 during the Greek military junta of 1967–1974.