The rising number of unaccompanied migrant minors in Europe highlights gaps in protection systems, such as insufficient resources and infrastructure in countries like Spain. This book delves into the experiences and challenges these vulnerable children face, combining empirical research and legal analysis to propose innovative solutions. Each chapter underscores the importance of child-centered policies that uphold minors’ rights, dignity, and development. Essential for academics, policymakers, and practitioners, this work is both a comprehensive resource and a call to action for building a more inclusive and supportive future for migrant minors.