Simonopetra Monastery (Greek: Σιμωνόπετρα, literally: "Simon's Rock"), also Monastery of Simonos Petra (Greek: Μονή Σίμωνος Πέτρας), is an Eastern Orthodox monastery in the monastic state of Mount Athos in Greece. Simonopetra ranks thirteenth in the hierarchy of the Athonite monasteries.