Lee Herbert Hamilton (born April 20, 1931), the vice chairman of the 9/11 Commission, currently serves on the President's Homeland Security Advisory Council, having previously served in the United States House of Representatives for thirty-four years.

Born in Daytona Beach, Florida, Lee Hamilton graduated from DePauw University in 1952, where he was a member of the Alpha Tau Omega fraternity, and from the Indiana University School of Law - Bloomington in 1956. He worked as a lawyer in private practice for the next ten years.

Hamilton was elected to the House of Representatives as a Democrat as part of the national Democratic landslide of 1964. He chaired many committees during his tenure in office, including the House Committee on Foreign Affairs, the U.S. House Permanent Select Committee on Intelligence, the Joint Committee on Printing, and others. As chairman of the Select Committee to Investigate Covert Arms Transactions with Iran, Hamilton chose not to investigate President Ronald Reagan or President George H. W. Bush, stating that he did not think it would be "good for the country" to put the public through another impeachment trial. He was one of the top choices to be running mate of Michael Dukakis in 1988 and Bill Clinton. It was speculated that Hamilton's chances were blocked by feminist organizations like National Organization for Women who didn't find Hamilton sufficiently pro-choice on abortion. He remained in Congress until 1999; at the time he was one of two surviving members of the large Democratic freshman class of 1965 (the other being John Conyers).