Over the last three decades, cross-border marriages between non-Korean women and Korean men have become increasingly common, comprising between 4% and 10% of all annual marriages in South Korea since 2005. In this article, I explore the historically evolving gendered, racialized, and classed normativities that migrant wives have confronted during this period. Triangulating between state-collected statistical data; ethnographic, demographic, and legal studies on migrant wives in Korea; and the country’s changing laws and policies on marriage migration, I show how these normativities, or what I term “functionalist visions of belonging,” have defined the legitimacy of migrant wives’ presence primarily in terms of their imagined use-values. I suggest that migrant wives have been interpellated by at least three analytically distinct functionalist visions of belonging over the past three decades: (1) ethnonational, which interpellated them in terms of “blood (dis)similarities”; (2) social-Confucian, which interpellated them in terms of their ability to fulfill gendered Confucian social roles; and (3) biopolitical, which interpellated them in terms of their biological-reproductive potential and also as the molders, not merely the bearers, of future Korean citizens.