In Latin America, childhood cancer includes a number of resource-intensive diseases, with inequalities in access to timely and appropriate diagnosis and treatment. In this context, civil society plays a fundamental role in improving childhood cancer care. The Region's organizations in this sector have become stronger and they now play a leading role in the delivery of services and in the promotion of awareness and advocacy for children's health. The Global Initiative for Childhood Cancer, promoted by the World Health Organization and other relevant actors, is an opportunity for governments and civil society to work together to implement best practices in the control of childhood cancer. This article addresses the role of civil society in the care of pediatric cancer in Latin America, highlighting the importance of its commitment to the fight against cancer, participation in awareness-raising, and defense of public policies that favor access to quality health services. It also focuses on the problems and opportunities for civil society in the Region in relation to the implementation of strategies to improve the survival and quality of life of children and adolescents living with cancer.