This case study presents a description and analysis of the role of non-governmental organizations (NGOs) in the NAP development process. Two types of institutions are identified: (1) Stakeholders that work on violence prevention or provide services to victims and survivors; and (2) groups of children and youth. The case study describes the methodology used for their participation, the description of the participants, and summarizes challenges and lessons learned that can strengthen the involvement of non-governmental institutions in the future.