Phú Quốc island as well as Phú Quốc district is a part of Kiên Giang province. The Phú Quốc’s natural landscape is so beautiful and it has a diversity of terrain. For living in this island, people have to adapt to the sea and depend on the sea. Their adaptation and dependence leads to the love and the gratitude to the sea, and it becomes the symbol of spiritual life. The islanders’ gratitude is manifested by the cult of the Goddess is called Bà (Lady) and the placeof worship is also called Dinh Bà (Mansion of Lady). This article initially examines the Dinh Bà system and the cult of the Goddess on Phú Quốc island. | The cult of goddess in Phú Quốc island from the worship of water goddess to the mother goddess