Over the last decade, the International Law Commission and the UN General Assembly have made progress in attempts to establish a Convention on Crimes Against Humanity (CAH). In this policy brief on a prospective CAH Convention, REDRESS, the International Federation for Human rights (FIDH), Global Survivors Fund (GSF) and TRIAL International voice support for a prospective CAH convention. This Convention can cement Customary International Law and fill an important existing gap in treaty law regarding crimes against humanity. The policy brief makes recommendations to States on reflecting progressive provisions on victims’ and survivors’ rights in a prospective CAH Convention