Coordinates: 21°13′42.8″S 159°46′35.5″W / 21.228556°S 159.776528°W
The Treaty of Rarotonga is the common name for the South Pacific Nuclear Free Zone Treaty, which formalises a Nuclear-Weapon-Free Zone in the South Pacific. The treaty bans the use, testing, and possession of nuclear weapons within the borders of the zone.
It was signed by the South Pacific nations of Australia, the Cook Islands, Fiji, Kiribati, Nauru, New Zealand, Niue, Papua New Guinea, the Solomon Islands, Tonga, Tuvalu, Vanuatu and Western Samoa on the island of Rarotonga (where the capital of the Cook Islands is located) on 6 August 1985, came into force with the 8th ratification, and has since been ratified by all of those states.
The Federated States of Micronesia, Marshall Islands, and Palau are not party to the treaties but are eligible to become parties should they decide to join the treaty in the future.