Julia Hahn

Julia Aviva Hahn (born April 1, 1991) is an American writer and political advisor. She previously served as Assistant Secretary for Public Affairs at the United States Department of Treasury during the second Trump administration and Deputy White House Communications Director in the first Trump administration.

Early life Hahn was born to a Jewish family, and grew up in Beverly Hills. She attended Harvard-Westlake School in Los Angeles.

Hahn then enrolled at the University of Chicago where she earned a Bachelor of Arts in philosophy. While a student, she also studied in Paris. Hahn's senior thesis at the University of Chicago was on "issues at the intersection of psychoanalysis and post-Foucauldian philosophical inquiry". Former White House strategist Steve Bannon credited Hahn with playing a significant role in "plotting the Dave Brat campaign."

In 2015, Hahn began working at Breitbart News as a writer, where she wrote on immigration and trade policy. She remained in the White House after Bannon's departure and until the end of Trump's first term. In August 2020, Hahn served as Deputy White House Communications Director. She also served as Director of Rapid Response and Surrogate Operations. According to The New York Times, on entering the White House at age 25, Hahn's financial disclosure forms indicate she had some $1.5 million in stocks including investments in PepsiCo and the State of Israel Bond, as well as a Custodial Bank Account for minors containing between $500,000–$1 million.

In April 2017, Hahn was named Washingtonian's "40 Under 40" list stating, "in three years, Hahn has cemented her status as a conservative-media fixture." She was described by the Washington Post as "Steve Bannon's right-hand woman" and the New Yorker called her "Bannon's Bannon." Ann Coulter described Hahn as "the most wonderful, brilliant, kind principled human being I've ever met." In McEnany's memoir, she noted Hahn would prepare her before press briefings.

In October 2020, Hahn helped lead the White House's communication strategy for the confirmation of Supreme Court Justice Amy Coney Barrett, working with the White House Counsel's office. In January 2021, Hahn was hired to U.S. Senator Bill Hagerty's staff, where she served as Deputy Chief of Staff for Communications.

Following Trump's reelection, she was appointed Assistant Secretary of Public Affairs at the U.S. Department of the Treasury by Secretary Scott Bessent. During her tenure at the Treasury, she worked on trade matters, sanctions, and tax policy. In August 2025, Hahn ended her tenure at the Treasury Department to establish a public affairs and communications firm in Washington, D.C..