Arturo Umberto Illia

president of Argentina

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June 29, 2026

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Arturo Umberto Illia served as the president of Argentina from 1963 to 1966. He was elected as the candidate of the Radical Civic Union party. Illia inherited significant economic challenges, including those left by his predecessor, Arturo Frondizi. Despite these difficulties, some economic reorientation efforts began to show positive signs during his term. Illia attempted to distance the resurgent Peronist movement from its exiled leader, but these efforts were unsuccessful. In June 1966, a coup led by General Juan Carlos Onganía, a former military leader, overthrew Illia's government.1

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Argentina
Attempts to restore constitutionalism, 1955–66
…1963 resulted in victory for Arturo Illia, the candidate of the Radical Civic Union. President Illia inherited Frondizi’s economic problems, although the drastic reorientation of the economy had begun to show signs of success. Illia tried without success to split the resurgent Peronists, who now controlled the labour unions, from…
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…1963 resulted in victory for Arturo Illia, the candidate of the Radical Civic Union. President Illia inherited Frondizi’s economic problems, although the drastic reorientation of the economy had begun to show signs of success. Illia tried without success to split the resurgent Peronists, who now controlled the labour unions, from…
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Radical Civic Union
…another coup removed its leader, Arturo Umberto Illia, from the presidency.
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…another coup removed its leader, Arturo Umberto Illia, from the presidency.
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