The Sōka Gakkai is a lay Buddhist movement, originating in Japan, that bases its religious practice and worldview on the Lotus Sutra-centric teachings of the Kamakura-era priest Nichiren (1222–1282). Following Nichiren, members of the Sōka Gakkai consider the practice of reciting Namu-myōhō-renge-kyō—the Daimoku, or title of the Lotus Sutra—to a copy of a character mandala (Gohonzon) originally inscribed by Nichiren to be the fundamental means for attainment of enlightenment. Also modeling themselves on Nichiren, the membership takes an active interest in the social and political realities of this world. In Japan, this engagement has taken various forms, including electoral support for a political party made up largely of Sōka Gakkai members, and globally, as activities in the fields of nuclear disarmament, sustainable development, human rights education, and humanitarian assistance.
Founded in 1930, the organization was suppressed during World War II. In the postwar era, its rapid growth, driven by a campaign of aggressive proselytization, as well its ongoing involvement in politics, has generated considerable controversy within Japanese society. Even as the organization has matured institutionally, and in its relations with other faith traditions, an exclusive commitment by members to a single faith practice makes it an outlier within the Japanese religious landscape.
The Sōka Gakkai in Japan currently claims some 8.27 million member families, making it the nation’s largest and most active religious movement. Outside Japan, under the rubric of Sōka Gakkai International (SGI), official statistics give membership totals of 1.75 million in 192 countries and territories, with 94 organizations incorporated under local national laws. More than half of the membership outside Japan—slightly more than 1 million—are said to be in Asia and Oceania, with South Korea, Taiwan, Hong Kong, and Singapore among the sites of large and active memberships. Other countries with significant national movements include Brazil, the United States, India, and Italy.
While the Sōka Gakkai was originally associated with the Nichiren Shōshū sect, long-standing tensions over the respective roles of priesthood and laity came to a head in a decisive schism in 1991, since which the two groups have pursued independent paths. Following the schism, the Sōka Gakkai has given more central emphasis to the “mentor-disciple relationship,” in particular as this relates to the first three presidents of the organization: Makiguchi Tsunesaburō (1871–1944), Toda Jōsei (1900–1958) and Ikeda Daisaku (1928–).