Daniel Howard Simpson (born July 9, 1939 in Wheeling, West Virginia) is an American former Foreign Service Officer. He was the United States Ambassador to the Central African Republic (1990–92),Special Envoy to Somalia and the United States Ambassador to the Democratic Republic of the Congo (1995–98) as well as undertaking other overseas assignments in Burundi, South Africa, Zaire (on three separate occasions) Iceland, Lebanon and Bosnia-Herzegovina. He also served as the Deputy Commandant of the United States Army War College and on the Board of directors as the Vice President of the National Defense University for the United States Institute of Peace.
Before joining the United States Foreign Service and becoming a diplomat in 1966, Simpson studied English literature at Yale University and African studies at Northwestern University, before travelling Africa to teach at the Eghosa Anglican Boys’ School in Benin City, Nigeria, and at the Libyan Army Military College in Benghazi, Libya.