Both in its advisory and contentious jurisdiction, the International Court of Justice has made considerable contributions to the evolution and interpretation of international humanitarian law (IHL). The judgments and advisory opinions of the Court in various cases have also developed the regulation of armed conflicts by showing the interplay of other bodies of international law and have shaped the development of non-binding IHL norms. The purpose of this short article is to consider the role of the International Court of Justice in the development of IHL.