The purpose of this paper is to examine the question of "what is sport in the context of development". Various kinds of development assistance have been given since World War II. However, the gap between developed and developing countries is still large. As a means of solving this North-Sourth inequality, attention has been drawn to sport as a new means of development in recent years. For instance, collaborative projects have been launched by the UNDP and IOC, and also the FAO and IOC in developing countries. These projects suggest that sport has come to be accepted as a form of development assistance. The number of IOC and IF member countries exceeds that of UN member countries. Therefore these organizations have the merit of being able to integrate the developed and developing countries on a global level, through the international character of sport rules. International sport organizations place themselves at the core of the power structure and have come to enforce their power on behalf of peripheral developing countries. The paper looks closely at the background to world-wide development of integrating organizations and describes the unexpected problems that have been occurring in the developing countries.