Logo of the Asiatic Society of Japan, with Kanji characters in [[Seal script. Read top-to-bottom and right-to-left: (The Society's name, one word per column).|alt=|frame]]

or "ASJ" is a non-profit organization of Japanology. ASJ serves members of a general audience that have shared interests in Japan.

Founded in 1872 as , ASJ is Japan's oldest learned society. The Honorary Patron is Hisako, Princess Takamado. The Representative Director and President as of September 2019 is H.E. Ambassador Yoshinori Kato.

Overview

The Asiatic Society of Japan's founders set into motion coordinated activities "to collect and publish information on subjects relating to Japan and other Asiatic Countries." They intentionally differentiated ASJ from its affiliated Royal Asiatic societies of the day by having established ASJ as a "Society for scholarly gentlemen" rather than a society of scholars. Nor was "Royal" to be used in ASJ's title, a measure to encourage Japanese people to join. Women also began to join within a few years. ASJ quickly became the first organization of its kind in Japan to promote the sharing of discoveries about Japan to the rest of the world.

ASJ was founded at a meeting held on 8 October 1872 at the Grand Hotel, Yokohama, when Robert Grant Watson of the British Legation was elected the first President, and the first papers were read there on 30 October—Notes on Loochoo by Ernest Mason Satow, then Japanese Secretary at the British Legation, and The Hyalonema Mirabilis, a marine biological study by Henry Hadlow, a Royal Navy surgeon. The opening papers were significant for two reasons: the subjects themselves, and the presence of James Curtis Hepburn and Satow at the very beginning of the ASJ's life.

ASJ's founders and earliest members were adventurous leaders who became pillars of Japan's modernization and industrialization at the dawn of Meiji Period. Physicians, scientists, teachers, engineers, military officers, lawyers, and diplomats numbered among them. In those days, there were numerous organizations like ASJ, each in their own way serving as focal points for documenting and discussing the discoveries that were being made by the men who were participating in the building of a new Japan. Many members of ASJ were also members of the other organizations.

Japanese members who were central to the Meiji Restoration included: Kanō Jigorō, Baron Naibu Kanda, Tsuda Sen, Nakamura Masanao, and Viscount Mori Arinori.

The 'foreign expert' group included The first ten volumes of the Society's Transactions, 1872–1882, printed 146 papers, of which 25 can be roughly classified as geographical or topographical. They are, however, far outnumbered by the largest subject grouping: the scientific papers during the same period, which included 52 studies. But to take the figures further, during the second decade, 1882–1892, 107 papers were printed, of which 4 were geographical and 18 scientific, a reflection of the end of the 'exploration' phase of Meiji. The men who contributed to the ASJ during its first 20 years began to move on to other activities.

Early presidents

Presidents of the organization during the 19th century: