The Concordia Association was a political party in Manchukuo. Established to promote the ideals of Pan-Asianism and the creation of a multi-ethnic nation-state and to create a structure which would gradually replace military rule over Manchukuo with civilian control, the party was unable to fulfill its promise, and was eventually subverted into an instrument of totalitarian state-control by the Japanese Kwantung Army.

Manchukuo was a puppet state of the Empire of Japan in Northeast China that existed from 1932 until its dissolution in 1945. It was ostensibly founded as a republic, its territory consisting of the lands seized in the Japanese invasion of Manchuria; it was later declared to be a constitutional monarchy in 1934, though very little changed in the actual functioning of government. Manchukuo received limited diplomatic recognition, mostly from states aligned with the Axis powers, with its existence widely seen as illegitimate.