The American Union of Associationists (AUA) was a national organization of supporters of the economic ideas of Charles Fourier (1772–1837) in the United States of America. Organized in 1846 in New York City as a federation of independent local Fourierist groups, the AUA published a weekly magazine called The Harbinger and published more than 70 books and pamphlets, which helped it to enjoy a brief moment of influence spreading the ideas of communitarianism to a circle of leading intellectuals.