Global citizenship education (GCE) has become an important topic in education and development discourses in an increasingly globalised world. Globalisation has affected the world socially, culturally, economically, politically, environmentally, and technologically. This calls for education that can empower learners to become engaged global citizens: learners who can understand that factors like globalisation, the global economic crisis, the refugee crisis, and climate change challenge traditional boundaries because of their ripple effects. Global citizenship education becomes an important tool to aid learners' appreciation the interconnectedness of the world and its diverse cultures, and their role in responding to global challenges. The aim of global citizenship education is to create active and responsible global citizens. Based on a qualitative research approach, this chapter discusses the concepts of global citizenship, global citizenship education, and the role of global citizenship education in sustainable development.