Back Antoni I de Constantinoble Catalan Antonios I. (patriarcha) Czech Πατριάρχης Αντώνιος Α΄ Κασυματάς Greek Antony I of Constantinople English Antoine Ier de Constantinople French Antonije I. Carigradski Croatian Antonio I di Costantinopoli Italian ანტონ I (კონსტანტინოპოლის პატრიარქი) Georgian Антониј I Цариградски Macedonian Antoni I Kassimates Polish
Antonios I. (griechisch Αντώνιος Α΄), ursprünglich Konstantinos Kassymatas (Κωνσταντίνος Κασσυματάς) war Patriarch von Konstantinopel (821–836/837).