Women's suffrage in Japan can trace its beginnings to democratization brought about by the Meiji Restoration, with the suffrage movement rising to prominence during the Taisho period. The prohibition of women from political meetings had been abolished in 1922 after demands from women's organizations led by activists such as Hiratsuka Raichō and Ichikawa Fusae. The movement suffered heavy setbacks during and after the Great Depression, when support for democracy began to wane and military influence over civilians increased dramatically. The first election by universal suffrage without distinction of sex was held in 1946, but it was not until 1947, when the constitution for post-war Japan came into effect, that universal suffrage was established In Japan.

Universal suffrage or universal franchise ensures the right to vote for as many people bound by a government's laws as possible, as supported by the "one person, one vote" principle. For many, the term universal suffrage assumes the exclusion of the young and non-citizens. At the same time, some insist that more inclusion is needed before suffrage can be truly universal. Democratic theorists, especially those hoping to achieve more universal suffrage, support presumptive inclusion, where the legal system would protect the voting rights of all subjects unless the government can clearly prove that disenfranchisement is necessary. Universal full suffrage includes both the right to vote, also called active suffrage, and the right to be elected, also called passive suffrage.