National Unity was an Irish nationalist political study group in Northern Ireland.
Its attempt to build a rank-and-file movement, the Irish Anti-Partition League, had ceased to function in 1956 and was wound up in 1959.
Although a few former members had formed local branches of the Nationalist Party, most were unorganised, while the only checks on and support for the politicians were conventions held before each election in order to select candidates.
The organisation encouraged the Nationalist Party to increase its level of activity, for it to appeal to Unionists, and also to try to draw young Irish republicans away from violence.
This had little impact on the Nationalist Party, so in 1962, National Unity renewed its call, declaring that it might contest elections where no candidate clearly stood for an alternative to the current constitutional situation.