The Argentine Libertarian Federation (in Spanish, Federación Libertaria Argentina, FLA) is a libertarian communist federation which operates in Argentina, out of the City of Buenos Aires, San Pedro, La Pampa Province, and Rosario. Founded in October 1935 with the name of the Anarcho-Communist Federation of Argentina (FACA, Federación Anarco-Comunista Argentina) the FLA adopted its current name in 1955.
Since 1985, the FLA has been publishing the political journal El Libertario. Prior to that, FLA published Acción Libertaria. The FLA is a member of the International of Anarchist Federations (IAF-IFA), the anarchist international which includes member organisations from Italy, Spain, Great Britain and Ireland, France, Germany and other nations.