Andrea Lee Thompson (born March 1, 1966) is an American government official and former military officer.

[1] From June 2007 to August 2008, she served as the special assistant to General George Casey, Jr., the Chief of Staff of the Army.

[1] In March 2013, Thompson became the senior military advisor to the U.S. House of Representatives Foreign Affairs Committee, which role she held until April 2014.

[4] She succeeded Colin Kahl who was the final National Security Advisor to Vice President Joe Biden.

[5] On December 12, 2017, the White House announced that Thompson would be nominated as the Under Secretary of State for Arms Control and International Security Affairs.