The Spanish Civil War had major political, social and economic consequences for Portugal, whose government acted as if the war were a domestic affair. Faced with the destabilizing contagion of the Second Spanish Republic, General Franco became the great hope for the Salazar regime, a strategic ally of the Spanish insurgents. In this context, the Portuguese Church, very close to Salazarism, supported the coup d’état against the Spanish Government by staging campaigns of anti-Communist agitation and legitimization of the Franco regime. By using documentary and newspaper sources, the main objective of this article is to describe and analyze some of the most relevant aspects of Portuguese Catholic propaganda between 1936 and 1939.