The Monastery of the Holy Incorporeal Taxiarchs (Άγιοι Ασώματοι Ταξιάρχες), commonly known as Petraki Monastery (Μονή Πετράκη, "Monastery of Petrakis"), is a Byzantine-era monastery in Ampelokipoi, Athens. It serves as the seat of the Holy Synod of the Church of Greece.