This article examines how variegated local and transnational interactions are reconfiguring Myanmar’s largest city of Yangon. We do this through an analytical focus on frontiers and an empirical focus on how these are secured, drawing on interviews at two Security Expos and street‐level observations in Yangon conducted over three years. Yangon thereby becomes a site for critical reflections about complex and multiple imbrications of frontiers, security and the urban with implications for how these may be conceptualized elsewhere.