Bernard H. Siegan (July 28, 1924 – March 27, 2006) was a longtime law professor at the University of San Diego School of Law, libertarian legal theorist and a former federal judicial nominee to the United States Court of Appeals for the Ninth Circuit. The New York Times called Siegan's nomination "one of the most bitterly disputed judicial nominations of the Reagan Era."
Born in Chicago, Siegan attended Marshall High School in Chicago, and served in the United States Army during World War II. Siegan earned a law degree from the University of Chicago Law School in 1949.
Siegan practiced law in Chicago from 1949 until 1973. In 1973, he became Professor of Law at the University of San Diego School of Law, where he taught for more than thirty years, becoming Distinguished Professor of Law. There, he taught constitutional law, and on the interaction of economics and the law, hosting guest lectures from such figures as former Chief Justice of the U.S. Supreme Court Warren Burger, Supreme Court Justice Antonin Scalia, former U.S. Attorney General Edwin Meese, and Nobel laureate James M. Buchanan. A participant in numerous academic and professional conferences, in 1983, for example, he spoke at The Thomas Jefferson School, a conference of intellectuals discussing Objectivism organized by economist George Reisman.