This paper addresses the issue of language and belonging in the transnational context of migration. It draws on two research projects with first-generation children of Polish labour migrants in Scotland. The paper examines the role that language plays in fostering multiple ways of being and belonging, and in understanding how children make sense of their identity. It suggests that language should take a more central place in debates about cultural connectivity and transnational migration. Findings point to the need for a more holistic approach to supporting migrant children, including the explicit recognition of family cultural and language capital in the host society.