Interest in race and ethnicity research in Wales has grown apace in the last decade, opening up wider debates about the nature, focus and content of what collectively is called Welsh Studies. Across a range of disciplines, we are witnessing not only a ‘global turn’ placing Wales more substantively within a plethora of global interconnections, but also a ‘decolonial turn’ that involves the questioning of disciplinary traditions and knowledge production, and highlighting the colonial legacy that shapes academic pursuits. In the present text, we explore the development of Welsh Studies through the lens of race/ethnicity. Contributors from history, heritage studies, literature, film, policy, social and cultural studies offer case analyses adopting new perspectives, theoretical routes and methodological innovations, with the aim of illustrating aspects of the decolonising of knowledge production.