The Asia-Pacific region has emerged as one of the most vibrant realms in which transnational migrants actively formulate social space across national borders. Previous studies often exaggerated such transnational mobility, too much emphasizing the relative autonomy of migrants?agency. For this reason they often overlooked the socio-economic structure overarching transnationalism as well as the institutional actors and their networks. The objective of this paper resides in this problematic. First, with emphasizing discussions on race, ethnicity, and nation, this paper examines how the nation-state and its nationalism are articulated with an increasing transnationalization of migrant labor in the region. Second, by drawing on international marriage women and transmigrant guest workers in the city of Gwangju, South Korea, this paper particularly focuses on understanding how transnational migrants?practices are associated with the institutional and organizational actors and their networks at multiple scales.