Increasing international mobility flows have presented both opportunities and challenges for social cohesion and integration in Europe. Language, as a tool for communication and a marker of identity, plays a pivotal role in ensuring equality of access to education, the labor market, and justice. However, many European states face difficulties in balancing the need for integration with the recognition of linguistic diversity, particularly concerning new minorities arising from migration flows. These challenges have underlined the urgent need for effective governance of linguistic diversity. This paper explores the governance of linguistic diversity in the context ofintegrating new minorities in Europe. It argues for expanding the scope ofminority rights — traditionally reserved for historical minorities — to include new minorities. This approach addresses gaps in international frameworks, particularly regarding identity and language rights, and fosters amore inclusive diversity governance model. Recognizing and protectingthe linguistic rights of new minorities is essential to promoting cohesionand belonging, reducing the risk of alienation and conflict, and avoidingforced assimilation. The paper highlights the dual need for supporting minority languages while maintaining proficiency in a common public language to ensure state functionality and societal integration. Using an interdisciplinary methodology, the paper combines legal and linguistic approaches to analyse language policies for new minorities. It examines three key areas — education, the labor market, and the judicial system— demonstrating how language rights intersect with societal inclusion andequity, and offering recommendations for balancing diversity and unity inmodern Europe.