Abonoteichos (Ancient Greek: Ἀβώνου τεῖχος, romanized: Abṓnou teîchos, demonym: Αβωνοτειχίτης, Abōnoteichítēs), later Ionopolis (Ιωνόπολις, Ionópolis; Turkish: İnebolu), was an ancient city in Asia Minor, on the site of modern İnebolu (in Asian Turkey), and remains a Latin Catholic titular see.