This paper discusses the institutional reorganization that has culminated in new designs for the management models of Public Research Institutes (PRIs), comparing the experiences of four PRIs in the agricultural sector to identify common elements and differences in processes, flows and policies. The focus is to improve research and innovation management, developing new approaches and tools. The four PRIs analyzed are the US Department of Agriculture�s Agricultural Research Service (ARS), the Research Branch of Agriculture & Agri-Food Canada (AAFC), the Brazilian Agricultural Research Corporation (Embrapa), and Uruguay�s National Agricultural Research Institute (INIA). The study shows that management processes have become more sophisticated and above all oriented to the creation of products, processes and services that are more likely to be used. This movement indicates a new positioning by PRIs in the agricultural innovation systems of their countries, reorienting their relationships with other actors of particular importance to knowledge production