This article studies the semantic relation between the concepts of Republic, Revolution and Evolution in four countries of the Ibero-American Atlantic World: Brazil, Spain, Mexico and Portugal in the period 1870-1910. For this, different programmatic and ideological texts issued by defenders of the republicanism of the four countries are analyzed. The aim is to show, on the one hand, that there was a shared republican grammar in the region (although with specificities according to the different realities) and, on the other, that in this grammar, the relation between the analysed concepts acquired a different meaning and led to the formulation of new models of republic. [ABSTRACT FROM AUTHOR]