Julianne Smith is an American foreign policy advisor and diplomat who served as the United States Permanent Representative to NATO in the Biden administration from 2021 until 2024.

From April 2012 to June 2013, she served as deputy national security advisor to then-Vice President Joe Biden.

[14] A 2021 investigation in The American Prospect found that Smith, "who listed Boeing and SoftBank as clients, earned $34,000 as a WestExec consultant while holding down a full-time role at the think tank German Marshall Fund.

[16] On June 15, 2021, President Joe Biden nominated Smith to serve as the United States permanent representative to NATO.

[18] Smith has written op-ed columns for The New York Times, Lawfare, Washington Monthly, Foreign Affairs, and The National Interest.