Scholarly and policy consideration of young people and the challenges of conflict resolution and peacebuilding has expanded in recent decades. However, as we examine in the chapters of this book, young people’s roles in peacebuilding continue to be viewed through the lenses of pre-existing assumptions about their competencies and dangerousness. Furthermore, narrow ideas about what peacebuilding is and where it takes place fail to notice and closely address the myriad ways in which young people already work on peace in their communities. Sustainable peace, we argue, involves more than simply including youth in official peacebuilding mechanisms or recognizing their local peacebuilding work; it requires a transformation in thinking about youth as actors in the world of security and peace.