Science diplomacy links the two policy domains of foreign affairs and science policy. Competitive thinking and the ways in which this affects global challenges are now putting the globalisation trends in science, technology and innovation under pressure. Rising populism adds to the growth of de-globalisation politics. In an increasingly knowledge driven world this leads to changes in the roles of diplomats. Their focus has already shifted from relatively neutral scientific collaborations to the technology and innovation interests of their home-countries. What are likely future developments of the field of science, technology and innovation diplomacy? The paper explores the future roles and development of innovation diplomacy as the outcome of interactions between the evolving characteristics of science, technology and innovation on the one hand and of international relations and foreign policies on the other. It is explorative, because there is no research tradition on which it can build and requires bringing together insights from several disciplines in new combinations. Trends in the fields of science, technology and innovation and in the field of international relations (including changes in the mechanisms and institutions for global governance) will be discussed. Together these drivers provide a framework through which potential futures of innovation diplomacy can be explored.