Abstract: As an island country in the Pacific region, it is natural for Japan to have diplomatic relationships with neighboring island countries. By the early 1970s, Japan started to provide Official Development Assistance (ODA) to two individual island countries in the Pacific region, and, in the mid-1980s, when most of the island countries had achieved independence, Japan’s diplomacy expanded to additional countries. In 1985 then Prime Minister Yasuhiro Nakasone made an official visit to two of the island countries, and, in 1987, official policy expressing support for the Pacific island countries’ independence, regional cooperation, political stability, economic development, and people-to-people exchange was issued. In October 1997, the “Japan-SPF Summit Meeting” with participants of leaders from Japan and 14 South Pacific Forum member island countries/regions and government representatives of Australia and New Zealand was held in Tokyo. The 8th Pacific Islands Leaders meeting held in May 2018 is symbolic of Japan’s diplomacy toward the Pacific Islands Forum member countries. This article is the author’s personal observation of Japan’s diplomacy toward Pacific Islands Forum member countries and the significance of Pacific Islands Leaders Meeting.