The South China Sea is a sea area located south of China and directly borders with other countries in the Asia Pacific and countries in Southeast Asia. The Chinese government claims unilaterally its territorial territory on the basis of Nine Dash Line. Often based on this it becomes a dispute or conflict between neighboring countries. In order to affirm the sovereign territory in the North Natuna waters, the Government of Indonesia named the North Natuna Sea the South China Sea which is included in the Exclusive Economic Zone of the Unitary State of the Republic of Indonesia. The purpose of this research is to find out the history of the North Natuna Sea and Indonesia's right to name the North Natuna Sea. This study uses normative research methods. The reason the Chinese government implemented Nine Dash Line departing from the history that they claim in control of the South China Sea, which actually based on international law or provisions in UNCLOS 1982 cannot be legalized. The Indonesian government has the legal right to be able to name the North Natuna Sea, which is still part of the Indonesian Exclusive Zone