This book has a clear concern to offer a distinctive way of studying leadership so that it might be practiced differently. It is distinctive in focusing on contemporary concerns about gender and ethics. More precisely, it examines the masculinity of leadership and how, through an embodied form of reasoning, it might be challenged or disrupted. A central argument of the book is that masculine leadership elevates rationality in ways that marginalize the body and feelings and often has the effect of sanctioning unethical behavior. In exploring this thesis, Leadership, Gender and Ethics: Embodied Reason in Challenging Masculinities provides an analysis of the comparatively neglected issues of identity/anxiety, power/resistance, diversity/gender, and the body/masculinities surrounding the concept and practice of leadership. It also illustrates the arguments of the book by examining leadership through an empirical examination of academic life, organization change and innovation, and the global financial crisis of 2008. In a postscript, it analyses some examples of masculine leadership in the global pandemic of 2020. This book will be of interest generally to researchers, academics and students in the field of leadership and management and will be of special interest to those who seek to understand the intersections between leadership and gender, ethics and embodied approaches. It will also appeal to those who seek to develop new ways of thinking and theorizing about leadership in terms of identities and insecurities, power and masculinity, ethics and the body. Its insights might not only change studies but also practices of leadership.