We review and synthesize over two decades of research on ethical culture in organizations, examining eighty-nine relevant scholarly works. Our article discusses the conceptualization of ethical culture in a cross-disciplinary space and its critical role in ethical decision-making. With a view to advancing future research, we analyze the antecedents, outcomes, and mediator and moderator roles of ethical culture. To do so, we identify measures and theories used in past studies and make recommendations. We propose, inter alia, the use of validated (...) measures, application of a wider range of theories, adoption of longitudinal studies, and study of group-level data in organizations. We explore research possibilities in new and emergent forms of organizations, ways of organizing work, and technology in ethical decision-making, such as the role of artificial intelligence. We also recommend the study of a broad range of leadership styles and their influence in shaping ethical cultures in organizations. (shrink)