This paper compares how rules of international humanitarian law and rules of Islamic law protect children in armed conflict. It examines areas of convergence and divergence, and areas where there is room for clarification between these two legal systems. This comparative exercise spotlights four key topics marking the wartime experience of children: the unlawful recruitment and use of children by armed forces and armed groups, the detention of children, their access to education, and the situation of children separated from their families.