The article introduces a special issue on “Rethinking Liberal Multiculturalism: Foundations, Practices and Methodologies.” The contributions presented in this special issue were discussed during the conference « Multicultural Citizenship 25 Years Later », held in Paris in November 2021. Their aim is to take stock of the legacy of Kymlicka’s contribution and to highlight new developments in theories of liberal multiculturalism and minority rights. The contributions do not purport to challenge the legitimacy of theories of multiculturalism and minority rights, they rather aim at deepening our understanding of the foundations of liberal multiculturalism and of its practical implementation, sensitive to social scientific dynamics of diverse societies. Without abandoning the general idea that cultural minorities should be granted special minority rights, the essays presented raise new questions about three dimensions central to liberal multiculturalism: its normative foundations, its practical categories of minorities or groups, and its fact-sensitive methodology. Taken together they shed light on the renewed variety of theories of liberal multiculturalism highlighting their complexity and internal disagreements. To introduce these articles, the article first draws a brief historical overview of the debates on multiculturalism since the 1990s (section 1). It then highlights the distinctive aspects of Kymlicka’s contribution (section 2) and identifies recent research trends (section 3). Doing so, it explains how the articles gathered here both expand on those distinctive aspects and explore those new research avenues. The section 4 summarizes the contributions.