This comparative essay on mutual influences between Spanish and Argentinian authoritarian nationalisms shows that overseas hispanophiles were inspired on different peninsular doctrinal sources, like the Menéndez Pelayo's national-Catholicism, the liberalism of the Institución Libre de Enseñanza, the Miguel de Unamuno's casticism, the Ortega's europeanism, the D'Ors' classicism or the Maeztu's Hispanidad. From half-thirties to half-forties, the different trends of Spanish nationalism integrated in the Francoist regime failed to impose the disappearance of alternative liberaldemocratic and peripheral nationalisms in the Argentinian political debate. Although authoritarian Spanish nationalism influenced the activity of Argentinian catholic intellectuals in different ways, their real effect was very relative, because they acted only as circumstantial models to some Argentinian political regimes. But their imperialist development and their relations with the fascist regimes at the beginning of the forties restricted their possibilities of influence in Argentina in a totally irreversible way.