Israel has become a Pacific Islands Forum partner, Foreign Minister Gideon Sa'ar says, describing the move as part of the country's broader effort to strengthen ties with the region.
Before Israel's inclusion, the PIF had 21 dialogue partners including the United States, China, Japan and the European Union.
Dialogue partners are countries and organisations outside the Blue Pacific region with significant interests in the islands and that contribute to discussions and initiatives aimed at regional development and security, according to the grouping's website.
Sa'ar said on X that PIF Secretary-General Baron Divavesi Waqa had informed him that Pacific leaders had approved Israel's application as a "Forum Partner" at their meeting in Palau.
Israel submitted its request during Sa'ar's visit to Fiji in June, when Israel opened an embassy in Suva, which also serves nine other Pacific island countries.
Under the arrangement, Israel will participate in co-operation on water management, desalination, agriculture, climate change, innovation and sustainable development, Sa'ar said.
Israel and the PIF will also prepare a joint action plan and establish a mechanism to monitor its implementation, he added.
Papua New Guinea, Fiji and Nauru have opened embassies in Jerusalem since the current Israeli government took office, Sa'ar said.
The move comes as Israel seeks to deepen diplomatic support amid mounting international pressure over its conduct of the war in Gaza.
Several Pacific island states have at times voted with Israel or against UN resolutions it opposed.
The Pacific Islands Forum has not publicly confirmed Israel's status and did not immediately respond to a request for comment.