This article examines whether and how non-State armed groups, as distinct entities, might be required to provide reparations for their violations of international humanitarian law. It shows that the possibility of holding armed groups to reparations is marked by uncertainty in international law. This complex question calls for clarification. In building on these observations, the article explores how the duty to provide reparations by armed groups could be operationalized as a matter of lex ferenda. This exercise involves examining how such a duty could be conceptualized and put into practice. From this discussion, a multi-faceted proposal emerges, which draws upon existing approaches in international law and responds to the particular challenges presented by armed groups. The article ends by considering the implications of the proposal.