The purpose of this study is to analyze the participation of civil society in the Brazilian technical cooperation activities offered to other developing countries. Specifically, it seeks to understand why and how the Brazilian Government works in partnership with social actors in these actions and the consequences of social actors` participation in the Brazilian cooperation foreign policy. This research is based upon two case studies that involves two distinct social actors that have an important presence in the cooperation offered by the Brazilian Cooperation Agency, namely: the industrial organization SENAI and the NGO Solidarity in Literacy. Using the theoretical framework of Foreign Policy Analysis, related especially to decision making-process, the study analyses the role developed by these actors in the Brazilian cooperation policy. It concludes that despite these actors participate in Brazilian cooperation as entities that implement policies, this does not imply that they develop a mere technical role. On the contrary, the cooperation activities that they carried out with Brazilian Government allowed them, even indirectly, to substantially participate and influence the Brazilian foreign policy in the field of South-South Cooperation.