Aladzha Monastery (Bulgarian: Аладжа манастир) is a medieval Orthodox Christian cave monastery complex in northeastern Bulgaria, 17 km north of central Varna and 3 km west of Golden Sands beach resort, in a protected forest area adjacent to the Golden Sands Nature Park. The monastery caves were hewn into a 25-m high vertical karst cliff near the upper edge of the Franga Plateau on several levels. The complex includes two small nearby catacombs.