Sérgio Vieira de Mello was a Brazilian United Nations diplomat who worked on several UN humanitarian and political programs for over 34 years. The Government of Brazil posthumously awarded the Sergio Vieira de Mello Medal to honor his legacy in promoting sustainable peace, international security and better living conditions for individuals in situations of armed conflict, challenges to which Sergio Vieira de Mello had dedicated his life and career.
He was killed in the Canal Hotel bombing in Iraq along with 20 other members of his staff on 19 August 2003 while working as UN High Commissioner for Human Rights and United Nations Special Representative for Iraq. Before his death, he was considered a likely candidate for UN Secretary-General.