Kokumin Domei

nihongo|Kokumin Dōmei (National Alliance) |国民同盟| Kokumin Dōmei was a Japanese fascist political party in Japan active in the 1930s.

Nakano Seigo and Adachi Kenzo formed the right-wing political organization Kokumin Dōmei in December 1932, after Adachi was banned from returning to the ranks of the Rikken Minseitō after his withdrawal in 1931. The Kokumin Dōmei advocated a form of state socialism or corporatism with government control of strategic industries and financial institutions, and the creation of a Japan-Manchukuo economic union. The party consisted mainly of defectors from the Minseitō, and had an original strength of 32 seats in the Diet. In 1934, it demanded an inquiry into the Teijin Incident in an effort to bring down the cabinet of Prime Minister Saito Makoto.

However, in 1935, many members returned to the Minseitō fold, and in 1936, Nakano left the party to form the Tohokai the following year. In the 1937 elections, the party's strength fell from 32 seats to 11 seats.

In June 1940, The Kokumin Dōmei was merged into the Imperial Rule Assistance Association as part of Hideki Tojo's efforts to create a single-party state, and thereafter ceased to exist.