A 29-year career diplomat, Tom Miller’s experience in the Foreign Service spanned many continents.  From 2001-04, he served as U.S. Ambassador to Greece, where he focused on the security concerns of the 2004 Olympic Games in Athens and domestic counterterrorism.  From 1999-2001, as U.S. Ambassador to Bosnia and Herzegovina, he worked on helping the country recover after a devastating war.  From 1997-99, he was Special Coordinator for the Cyprus negotiations (rank of ambassador).  He was also posted to Thailand as well as the State Department in Washington, where he focused on North Africa, the Middle East, and counter-terrorism issues.

From 2010 to 2018, he served as President/CEO of International Executive Service Corps, a non-profit that provides expertise to the developing world to train in best business practices.

In 2009, Tom was President and CEO of the United Nations Association of the U.S. From 2005 through 2008, he was CEO of Plan International, a large nongovernmental organization that works in 66 countries to improve the lives of children in developing countries.

Appointed by Secretary of State Hillary Clinton in 2011, Tom served as the Chair of the Board from 2011-2023 and is currently a member of the board of the International Commission on Missing Persons, an internationally acclaimed organization that identifies missing persons in many countries by using DNA-matching and other techniques.

From 2019 to 2022, Tom was Chair of the Board of the US subsidiary of Intralot, Inc., a US corporation that runs lotteries in 11 states. Tom also serves on the boards of Partnership for a Secure America (promoting bipartisanship in U.S. foreign policy), the Foreign Service Labor Relations Board, and Lampsa (a Greek hotel company). He is the recipient of many honors and awards.

A native of the Chicago area, Ambassador Miller holds five degrees from the University of Michigan: a Ph.D. in Political Science (1975), Master's in Political Science (1973) and Asian Studies (1972), and a B.A. in Political Science (1969) and an honorary Doctor of Laws degree (2003). He also received an honorary degree from the American College of Greece (2002).