Global Citizenship Education (GCE) plays a central role within UNESCO's education sector, focusing on cultivating the values and knowledge essential for students to evolve into well-informed and responsible global citizens. This Element conceptualises an ethical GCE framework grounded in critical, cosmopolitan, humanistic, value-creating, and transformative principles. Guided by those principles, ethical GCE goes beyond the banking model of education by emphasising a global ethic. Ethical GCE is inclusive, ethically reflective, and socially responsible. It extends beyond imparting knowledge and employable skills, important as they are, focusing on holistic and sustainable development. With further theoretical development and implementation strategies, the ethical GCE framework holds promise for future research and evaluation of the intricate teaching and learning processes within global citizenship, particularly from a values-based perspective.