Alan Morton Dershowitz is an American lawyer and author. He is a scholar of United States constitutional law and criminal law, and a leading defender of civil liberties. He spent most of his career at Harvard Law School where in 1967, at the age of 28, he became the youngest full professor of law in its history. He held the Felix Frankfurter professorship there from 1993 until his retirement in December 2013. He is now a regular CNN contributor and political analyst.
Dershowitz was involved in several legal cases and is a commentator on the Arab–Israeli conflict. As a criminal appellate lawyer, he won 13 of the 15 murder and attempted murder cases he handled, and has represented a series of celebrity clients, including Mike Tyson, Patty Hearst, and Jim Bakker. His most notable cases include his role in 1984 in overturning the conviction of Claus von Bülow for the attempted murder of his wife, Sunny, and as the appellate adviser for the defense in the O. J. Simpson murder trial in 1995.
A political liberal, he is the author of a number of books about politics and law.