This research analyzes the proliferation of regional integration processes in South America from its institutionality. The goal is to verify if the development of these processes occur concurrently or in a complementary manner by evaluating how activities, agendas and interests overlap. MERCOSUR, UNASUR and CELAC agendas’ were selected as the object of this work and the hypothesis is that fragmentation can be seen in the multiplication of initiatives and reflects the diversity of strategies adopted by the governments in their foreign policy to treat integration, denoting the absence of a majority conception of "regional integration" in Latin America that may allow the formation of a base of convergence of multiple initiatives. To verify it, we did a mapping of regional processes and document analysis, combined with interviews with institutional actors of the mechanisms. The results show that governance and fragmentation scenarios coexist in the region, demanding new studies and efforts to build an integrated space.