This article analyses the scholarly results concerning the social phenomenon of intermarriage. It specifically focuses on the similarities and differences in the latter in Europe, between migrants and host society members, and between national minorities and majorities. The study shows that while intermarriage between migrants and host society members is often seen as a vehicle for bridging social gaps and promoting social cohesion, intermarriages between national minorities and majorities is more likely to lead to erosion of minority identities and cultural traits. Common challenges faced by intermarried couples include resistance from family members and bureaucratic obstacles, with gender dynamics playing a crucial role, particularly in traditional societies where women often bear the brunt of cultural assimilation. Intermarriage also promotes the perspective of the integrative nature of nation-states without requiring intervention by the states themselves. The article underscores the importance of deepening the discourse on intermarriage and focusing on the impact of the latter on both migrant and national minority communities through both quantitative analyses and qualitative approaches. This may improve the understanding of the transformative potential and challenges of these unions.