Background/purpose: This article aims to analyze the scientific literature on Global Citizenship Education (GCE) to examine whether it has educated critical citizens capable of transforming the world. Materials/methods: This article conducts a systematic review of the existing literature on CGE in the primary social science databases in Ibero-America until 2022, using the PRISMA method (Urrutia & Bonfill, 2010). The selected documents are analyzed quantitatively and qualitatively using Atlas software, which allows for identifying the main themes prevalent in research on CGE. Results: The results showed how GCE research became more relevant over time. However, several aspects still require further research, such as GCE in formal education at non-university levels, GCE in informal and non-formal education, or educational resources for working on GCE. Conclusion: In conclusion, it has been possible to glimpse gaps that represent new lines of research necessary to promote the formation of global citizenship that acts to transform the world into a more sustainable and humane place.