Citizenship education is one of the most important issues in education around the world. Inrecent years, many organizations such as UNICEF and OECD have highlighted theimportance of developing the necessary skills in children, so that they can become activecitizens who participate in society and contribute to its well-being. However, citizenshipeducation for preschool children is often neglected, as educators consider them to be youngand incapable to fully understand the concepts involved. The present study focuses on theimplementation of an educational action research in 16 children of a multiculturalkindergarten in Northern Greece, in order to cultivate skills that will make them activecitizens. More specifically, it examines in what ways the educational actions developed cancontribute to citizenship education and what are the possible learning outcomes for globalcitizenship, solidarity, and diversity for preschool children. The educational action researchmethod was chosen as the most appropriate method to conduct the research. The results of theresearch showed that when the educational actions are implemented frequently, they can haveencouraging results in the cultivation of citizenship in children and that children canunderstand to a significant extent the concepts of global citizenship, solidarity and diversity.Finally, the results of the action research can provide useful information to educators for theimplementation and design of similar educational actions.