The chapters in this book highlight the possibilities and complexities of putting decolonial theory to work in higher education in Northern and Southern contexts across the globe. This book looks at decolonial work as praxis involving transformation at a range of levels from theoretical development, national policy, institutional policy and culture, academic discipline, programme, course, classroom, student and the self. Our authors argue that praxis in their contexts includes working at institutional level to undo the historical power of 'coloniality' in universities in the metropoles, introducing Indigenous knowledges into curricula and undoing the effects of 'coloniality' in embodiment, temporality and whiteness. We, as editors, argue for the need for transformation of the self as well as structures, and highlight qualities such as reflexivity on our own entanglements with coloniality, and why they occur, in this undoing. The approach offered in this book emphasises the connection between significant personal change as a pre-condition and an epistemological process to connect critical decolonial theory and our teaching practice. The book was originally published as a special issue of the journal Teaching in Higher Education.