Since the Cold War, diplomatic tensions between Taiwan, China, and the United States have remained important in the Asia-Pacific region and the international system. Transformations in the international system and changes in the economic structures of the parties are redefining the areas of conflict and cooperation between these three actors. Among such areas, migration is a complicated process that influences societies, economies, and politics, having recently become a very topical issue in shaping diplomatic tension. This paper, therefore, is dedicated to analyzing the Taiwan-China-US triangle in terms of migration dynamics. The paper discusses how diplomatic tensions shape migration policy and flows, and vice versa, in these three actors. It is built upon the idea that the migration dynamics within the Taiwan-China-US triangle cannot be understood in isolation from the geopolitical, economic, and sociocultural factors that shape them. Through unveiling migration’s effects on diplomatic tension and vice versa, it contributes to a more profound comprehension of the complex dimensions of migration and its far-reaching implications for regional and global stability.