This paper examines the relationship between the legal framework of international humanitarian law (IHL) and civil society actors operating in conflict situations. Attention is paid to assessing the manner in which the latter can play a role in strengthening the humanitarian dimension of the former. Brief introductory comments are warranted so as to situate the debate, in which non-governmental organizations (NGOs) operating in a conflict zone are adopted as the primary unit of analysis. IHL is the field of public international law which regulates the conduct of hostilities, namely restricting the means and methods of warfare available to parties to the conflict, and laying out protections afforded civilians and those no longer taking part in hostilities (hors de combat). State-centric in its development, the central tenets of IHL are found in the Hague Regulations of 1907, the four Geneva Conventions of 1949 and the two Protocols Additional to the Geneva Conventions of 1977. It is the right of sovereign states to decide which treaty-based international legal obligations they adopt regarding the legal regulation of the conduct of armed conflicts, however a number of legal provisions of IHL have attained the status of customary international law, and are thus binding on all parties to the conflict. This raises questions in regards to the status of non-state actors under international humanitarian law. The legal position of such actors, which for the purpose of this paper will focus on international organizations and non-governmental organizations, warrants close examination.