Thomas Michael Tolliver Niles (September 22, 1939 – April 30, 2025) was an American diplomat who served as a career

Foreign Service Officer A Foreign Service officer (FSO) is a commissioned member of the United States Foreign Service. FSOs formulate and implement the foreign policy of the United States. They spend most of their careers overseas as members of U.S. embassies, cons ...

and

United States Ambassador Ambassadors of the United States are persons nominated by the president to serve as the United States' diplomatic representatives to foreign nations, international organizations, and as ambassadors-at-large. Under Article II, Section 2 of th ...

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

(1985–89), the

European Union The European Union (EU) is a supranational union, supranational political union, political and economic union of Member state of the European Union, member states that are Geography of the European Union, located primarily in Europe. The u ...

(1989–91), and

Greece Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...

(1993–97). He later served as President and Vice Chairman of the

United States Council for International Business United may refer to: Places * United, Pennsylvania, an unincorporated community * United, West Virginia, an unincorporated community Arts and entertainment Films * ''United'' (2003 film), a Norwegian film * ''United'' (2011 film), a BBC Two f ...

and was a member of the

American Academy of Diplomacy The American Academy of Diplomacy is a private, nonprofit, non-partisan, elected organization whose active membership is limited to men and women who have held positions of high responsibility in crafting and implementing American foreign policy. ...

. He graduated from

Harvard University Harvard University is a Private university, private Ivy League research university in Cambridge, Massachusetts, United States. Founded in 1636 and named for its first benefactor, the History of the Puritans in North America, Puritan clergyma ...

and the

University of Kentucky The University of Kentucky (UK, UKY, or U of K) is a Public University, public Land-grant University, land-grant research university in Lexington, Kentucky, United States. Founded in 1865 by John Bryan Bowman as the Agricultural and Mechanical ...

. Niles joined the Foreign Service in 1962. His father was the American composer

John Jacob Niles John Jacob Niles (April 28, 1892 – March 1, 1980) was an American composer, singer and collector of traditional ballads. Called the "Dean of American Balladeers," Niles was an important influence on the American folk music revival of the 195 ...

. He died from cancer in Stamford, on April 30, 2025, at the age of 85.

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* 1939 births 2025 deaths Ambassadors of the United States to Canada Ambassadors of the United States to Greece Politicians from Lexington, Kentucky Ambassadors of the United States to the European Union United States Foreign Service personnel University of Kentucky alumni Harvard University alumni 20th-century American diplomats Deaths from cancer in Connecticut {{US-diplomat-stub