Stephen J. Hadley is the current National Security Advisor for U.S. President George W. Bush. He had been Assistant to the President and Deputy National Security Advisor from January 22, 2001. On November 16, 2004, it was announced that he would replace Condoleezza Rice as National Security Advisor, upon Dr. Rice's confirmation as Secretary of State, which occurred on January 26, 2005.

Hadley served as a senior foreign and defense policy advisor to then-Governor Bush during the 2000 presidential campaign and worked in the Bush-Cheney Transition on the National Security Council.

Previous to this position, he was a partner in the Washington, D.C. law firm of Shea & Gardner and a principal in The Scowcroft Group, Inc., an international consulting firm.

Hadley served as the Assistant Secretary of Defense for International Security Policy from 1989-1993. In that position, he had responsibility for defense policy toward NATO and Western Europe, on nuclear weapons and ballistic missile defense, and arms control. He also participated in policy issues involving export control and the use of space. Hadley served as Secretary of Defense Cheney's representative in talks led by Secretary of State James Baker that resulted in the START I and START II Treaties.

Hadley previously served in a variety of other capacities in the defense and national security field, including serving from 1986-1987 as Counsel to the Special Review Board established by President Ronald Reagan to inquire into U.S. arms sales to Iran (the "Tower Commission"), as a member of the National Security Council staff under President Gerald Ford from 1974-1977, and as an analyst for the Comptroller of the Department of Defense from 1972-1974.

Hadley has been a member of the Department of Defense Policy Board, the National Security Advisory Panel to the Director of Central Intelligence, and the Board of Trustees of Analytical Services, Inc. ("ANSER"). His professional legal practice focused on business problems of U.S. and foreign corporations particularly as they involve international business, regulatory, and strategy issues. He received a B.A. degree from Cornell University in 1969, where he was a member of the Phi Kappa Psi fraternity, and a law degree from Yale Law School.

Preceded by: Condoleezza Rice

National Security Advisor 2005–

Succeeded by: Current incumbent