Sean Cairncross

Sean S. Cairncross
National Cyber Director of the United States
Assumed office August 2, 2025
PresidentDonald Trump
Preceded byHarry Coker
Personal details
Born (1974-07-12) July 12, 1974
PartyRepublican

Sean Stuart Cairncross (born July 12, 1974) is the National Cyber Director (NCD) of the United States.[2] He is also an American lawyer that served as the Chief Executive Officer (CEO) of the Millennium Challenge Corporation, Senior Adviser to U.S. President Donald Trump, and CEO for the Republican National Committee. [3][4][5] He was nominated to be the National Cyber Director on February 11, 2025 and confirmed on August 2, 2025.[6][7]

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