Michael Boudin (/buːˈdiːn/ boo-DEEN; born November 29, 1939) is a former United States circuit judge of the United States Court of Appeals for the First Circuit. He served as Chief Judge of that court from 2001 to 2008. Before his service on the First Circuit, he was a United States District Judge of the United States District Court for the District of Columbia. He was elected to the American Philosophical Society in 2010.^[1]

Boudin was born in New York City, the son of poet Jean (Roisman) Boudin^[2] and the civil liberties attorney Leonard Boudin, and older brother of Weather Underground member Kathy Boudin.^[3] He graduated from Harvard University in 1961 with a Bachelor of Arts. He then attended Harvard Law School, where he was president of the Harvard Law Review. He graduated with a Bachelor of Laws in 1964.

He was a law clerk for Judge Henry J. Friendly of the United States Court of Appeals for the Second Circuit from 1964 to 1965, and then clerked for Justice John Marshall Harlan II of the Supreme Court of the United States from 1965 to 1966.^[4]

From 1966 to 1987 Boudin practiced regulatory law at Covington & Burling, a Washington, D.C., law firm. He spent 21 years at Covington & Burling, primarily drafting appellate briefs in complex regulatory matters for corporate clients. He worked as a visiting professor at Harvard Law School from 1982 to 1983, and then as a lecturer there from 1983 to 1998. He then served in President Reagan's Justice Department as a deputy assistant United States Attorney General of the Antitrust Division from 1987 to 1990.^[4]

On May 18, 1990, President George H. W. Bush nominated Boudin to the United States District Court for the District of Columbia, to a seat vacated by John H. Pratt. He was confirmed by the United States Senate on August 3, 1990, and received his commission on August 7, 1990. Boudin served on the District Court for about 18 months, but resigned on January 31, 1992 to return to Massachusetts.^[4]

Two months later, on March 20, 1992, President Bush nominated Boudin to an appellate judgeship on the United States Court of Appeals for the First Circuit, headquartered in Boston, to the seat vacated when Judge Levin H. Campbell assumed senior status. He was confirmed by the Senate on May 21, 1992, and received his commission on May 26, 1992.^[4] Boudin served as Chief Judge of the First Circuit from 2001 to 2008. He assumed senior status on June 1, 2013.^[5][4] He retired from service on December 15, 2021.^[4]

• List of Jewish American jurists
• List of law clerks of the Supreme Court of the United States (Seat 9)
• Louis B. Boudin
• Leonard Boudin
• Kathy Boudin
• Chesa Boudin