The Antifascist United Front (FUA) – [Portuguese: Frente Única Antifascista] was a Brazilian political organization.

[1] FUA was founded in São Paulo on 25 June 1933 to oppose fascism, as represented by the Brazilian Integralist Action (AIB).

FUA was created on the initiative of Communist League (LC),[2] Brazilian Socialist Party (PSB), Italian anti-fascist immigrants and other leftist organizations.

Until February 1934, the year in which the organization ceased activities, FUA edited the newspaper O Homem Livre, the main vehicle of antifascist propaganda of that period.

This became a political issue for elites, middle classes, and workers with socialism, communism, fascism, and anarchism all contending for influence.