Within a global discourse of increasing human capital for competitive advantage, skilled migration following international education -known as two-step migration -has been used by governments as a human capacity building strategy. In government-commissioned reports and studies, the dominant use of economic frameworks describes two-step migrants as rational choice makers. Such approaches have the effect of disembodying transnational mobilities as homogeneous 'brain flows' across borders. In contrast, migrants have their own pursuits and experience circumstances affecting their subjectivities in transnational mobilities. By building on extant research on transnationalism, this thesis provides a more holistic picture of education-related and professional migration. It acknowledges the embodiment of transnational mobilities through the relational aspects of migrants' everyday lives, from forming decisions to migrate, to relocating to the host society and planning for the future. Therefore, understanding the relationality of transnational mobilities requires researchers to attend to skilled migrants' engagement with the world across multiple spaces and temporalities.In this study, I examine education-related migration from Vietnam to Australia, portrayed in policy discourse as a human capacity building strategy (Vietnam), and a dual national project of education Negotiation of transnational mobilities by the participants is explored in four major areas: decisions to migrate, relocation experiences, work and life aspirations, and uses of transnational ties. Drawing on Heidegger's phenomenology, I examine these four areas using the concept of being-in-the-world in terms of these migrants' interactions with others and things, the ways they followed and/or broke with public norms, as well as what mattered to them in their mobilities in relation to the surrounding world.ii This thesis contributes further understandings and elaborates distinctive features of two-step migration from Vietnam to Australia in place of earlier research which has analysed Asian migratory flows. The concept of being-in-the-world enables me to argue that two-step migrants from Vietnam in Australia negotiate transnational mobilities through their embeddedness in the socio-political, economic, educational and cultural structures in both countries in relation to their personal concerns and circumstances. Thus, I challenge the assumptions present in 'race for talent' policies that disembody professional migrants as homogeneous flows of human capital from one nation to another. Exploring migrants' entwinement with the world in intersecting domains enables me to add nuances to previous understandings of binaries in migration, including 'routes' and 'roots', agency and structure, and spatiality and temporality. I also extend my critique to approaches adopted in skilled migration research that examine separate influences from migrants' interactions with the world on their negotiations of mobilities.By re-conceptualising transnational mobilities as...