Sadako Ogata, née Nakamura (緒方 貞子, Ogata Sadako, 16 September 1927 – 22 October 2019), was a Japanese academic, diplomat, author, administrator, and professor emerita at the Roman Catholic Sophia University. She was widely known as the head of the office of the United Nations High Commissioner for Refugees (UNHCR) from 1991 to 2000, as well as in her capacities as Chair of the UNICEF Executive Board from 1978 to 1979 and as President of the Japan International Cooperation Agency (JICA) from 2003 to 2012. She also served as Advisor of the Executive Committee of the Japan Model United Nations (JMUN).