This article reviews the recent literature concerning the roles of sport in development and peacebuilding, and proposes three related propositions concerning that work. First, we contend this emerging field has been under-theorized to date. Second, we argue that meso-level theories, chiefly public sphere, field and network theory may prove especially auspicious starting places for theory building for this complex area of inquiry. Finally, we caution that efforts to develop a more robust theorization of the roles of sport in development and peacebuilding must be thoroughly contextualized if they are to prove meaningful for researchers and practitioners alike. Overall, this analysis suggests sport can indeed serve useful roles in development and peacebuilding, but that it does not constitute a substitute for developing social norms and values that conduce to mutual tolerance and shared commitment to non-violent conflict management. These, finally, underpin any success sport may enjoy as an instrument of development or peace.