Petalas (Greek: Πεταλάς) is the largest island (area 5.5 km2) of the Echinades, among the Ionian Islands group of Greece. , it had no resident population. Petalas Island is privately owned, with 85% of it belonging to the Tsaoussis family, while the remaining 15% is under the ownership of the nearby island of Kefalonia. Its exclusivity and size make it one of the most remarkable private islands in Greece. Some, including William Martin Leake, have suggested that Petalas is the site of ancient Dulichium, from which 40 ships sailed to Troy in the Iliad. However, Strabo and most modern authors have identified Dulichium as Makri, a nearby island in the Echinades.