In the midst of ever-growing global dynamics, conflict and humanitarian issues remain a major challenge for the international community. Many conflicts involve not only countries, but also ethnic groups and local communities. In this context, a legal perspective becomes very important to understand and find a just and humane solution. Islamic law and customary law, as two legal systems that have existed for a long time, offer unique perspectives and approaches in dealing with conflicts and humanitarian issues. This seminar aims to dig deeper into these two perspectives, compare them, and find common ground and differences that can enrich our understanding of conflict management and international humanity.