Robert C. O'Brien

American lawyer

Robert Charles O'Brien (born June 18, 1966) is an American lawyer and politician. He has worked privately and with the United States government. He is the 28th and current United States National Security Advisor since September 18, 2019. He also is an ambassador with the U.S. Special Presidential Envoy for Hostage Affairs. He is a partner at Larson O'Brien LLP, a Los Angeles-based boutique law firm.[1][2]

Robert O'Brien
Robert O'Brien with President Trump in California (48759209323) (cropped).jpg
28th United States National Security Advisor
Assumed office
September 18, 2019
PresidentDonald Trump
Preceded byJohn R. Bolton
Succeeded byJake Sullivan (designate)
Special Presidential Envoy for Hostage Affairs
In office
May 25, 2018 – October 3, 2019
PresidentDonald Trump
Preceded byPosition established
Succeeded byHugh Dugan
Personal details
Born (1966-06-18) June 18, 1966 (age 54)
Los Angeles, California, U.S.
Political partyRepublican
EducationUniversity of California, Los
University of California,

In November 2020, O'Brien was seen as a possible candidate for president in the 2024 election.[3]


  1. Meyer, Dani. "11 Arent Fox Attorneys Decamp to Launch Litigation Boutique". Law 360. Law 360. Retrieved August 30, 2016.
  2. "Robert C. O'Brien". U.S. Department of State. U.S. Department of State. Archived from the original on June 23, 2018. Retrieved June 27, 2018.
  3. "Trump's national security adviser floats a 2024 bid with friends". Politico. Retrieved November 24, 2020.

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