This chapter discusses the convergence between the discourses of science diplomacy and science policy, highlighting the possible influence of the latter on the former. After presenting the concept of science diplomacy, the chapter goes on to illustrate the main characteristics of four models of science policy as described in the literature: the linear, demand pull, systemic and transformative models. Three themes common to the two domains of science diplomacy and science policy are then listed and discussed – namely, the representation of the scientific community, the social relevance of scientific knowledge and the role of stakeholders in the processes of scientific research, technological development and innovation – showing how science diplomacy draws on the discourse of science policy for their framings.