As a result of the PostCold War development, the international relations have shifted from bipolarism to a multipolarism. Once relevant Westernborn IR theories lack explanatory power. Current IR witness the growing role of the nonWestern states both in regional and international domains. Consequently, there is a growing need for appropriate IR theories that could explain the changing world structure, describe the role of new powers in international politics and define future development. Thus, it is essential to study nonWestern research that focuses on conceptualization of ongoing processes from its perspective. The authors analyze the IR theories developed by South Korean scholars. The purpose of this article is to analyze South Korean interpretations of the middlepowermanship that considers the Republic of Korea’s unique regional and global context. South Korean scholars agree on a particular geostrategic location of the state. The geopolitical location, absence of natural resources and limited military power hinder South Korea’s ability to use hard power in regional and international politics. However, South Korea’s economic development and creative approach in foreign policy translate into middle power diplomacy, which includes niche diplomacy, moderating role in relations between greater powers, regional cooperation promotion, and development of the international legal system. The authors conclude that the South Korean version of the middle power theory is continuously being (re) interpreted and adapted to the country’s foreign policy and South Korea should be a bridge between the great powers in the region. © 2020 Academic Educational Forum on International Relations. All rights reserved.