Humanitarian communication has often been considered a difficult task among aid organizations because it implies the moral paradox of selling distant suffering to solicit global audiences’ affects and donations. A majority of studies in the field of social marketing and crisis reporting have shown the shortcomings of business-like methods and the ethical controversies of humanitarian representations. Yet humanitarian communications are multiple and overlap with other communication fields, such as public, corporate or political communication. They are also defined by ethics and principles grounded in the humanitarian mandate and identity of organizations that range from emergency relief to child protection, women education or climate change. This chapter explores humanitarian communications for public purposes at first. It examines the constraints of fundraising and aid agencies’ use of public relations to build acceptance and promote a cause and the necessity for the humanitarian sector to adopt ethical codes and accountability procedures to address the donor/beneficiary relationship. Then it focuses on operational uses such as advocacy and negotiation to discuss how political concerns raised publicly by humanitarian organizations challenge their neutrality. Finally, it considers the growing use of communication technologies for relief response and their impact on life-saving communication.