The study aims to explore the consensus-level strategic priorities for sustainable development from the perspective of decision makers in organisations responsible for governing international sport and how they cluster within the Framework for Strategic Sustainable Development. We employed the three-round Delphi study with decision makers from international sport organisations. Based on the 29 semi-structured interviews in the first round, we inductively generated items for questionnaires for the subsequent two rounds. The process yielded 20 items representing strategic priorities determined by 20 experts in the last round. The highest ranked item was normative change, in which sustainability is prioritised throughout all organisational strategies and actions. Moreover, planned efforts that are part of a long-term strategy and embedding sustainability requirements at the bidding phase of sport events were considered with high priority. The 20 items clustered into four out of five levels of the Framework for Strategic Sustainable Development, namely system, success, strategic guidelines and actions. No items could be assigned to the framework’s tool level, potentially indicating gaps of strategic consideration. The findings from the Delphi study add a forecasting element to the research and practice of strategic sustainability in the management of sport by revealing consensus-level strategic priorities for the future.