UNHCR, the UN Refugee Agency, has the mandate to save lives and build better futures for millions of forcibly displaced and stateless people. This contribution sets out UNHCR’s mandated roles concerning displaced population groups and details the nature of the humanitarian and human development challenges that confront the international community. In this important regard, the social protection coverage extension objectives of the 2030 Agenda for Sustainable Development and the Global Partnership for Universal Social Protection (USP), to leave no one behind, are considered essential.