The objective of the thesis is to study the performance and mobilization of national organized interests on the international arena, a still incipient theme in Brazilian political science studies. Thus, we will analyze the internalization process conducted by the largest representative association of the sugarcane sector: UNICA Union of Sugarcane Industry. Since 2006, UNICA has been undertaking a great process of performance abroad with the opening of specialized offices in Washington (2007) and Brussels (2008) in addition to the signature of an agreement with Apex-Brasil (also in 2008). We therefore believe that these initiatives are linked to an increased presence of agribusiness Brazils sugarcane in the world, which has increasingly demanded representation and advocacy actions toward the international level. In this study, we will adopt a theoretical perspective grounded in the literature about interest groups analysis, specifically in foreign lobbying approach which seeks to understand the mechanisms of penetration in target markets and the performance of those groups in these states political institutions, engaged on this activities regulation. Furthermore, we will utilize, on a subsidiary way, the literature that discusses the sugarcane ethanol fundaments and current market developments in Brazil and all over the world. This analysis will allow mapping the organization activities in the last years, leading us to a more accurate knowledge about our object research. For this intent, the work will be conducted primarily by through the examination of: i) regulatory frameworks governing the sugarcane sector in Brazil and in the main markets, ii) news, iii) academic articles and books, iv) non-academic literature, v) UNICA documents and organization officers declarations.