|Judge of the United States Court of Appeals for the Second Circuit|
July 21, 1994 – July 21, 2009
|Appointed by||Bill Clinton|
|Preceded by||Thomas Meskill|
|Succeeded by||Christopher Droney|
|Dean of the Yale Law School|
July 1, 1985 – July 21, 1994
|Preceded by||Harry Wellington|
|Succeeded by||Anthony Kronman|
|Born|| October 18, 1932
|Alma mater||Yale University
Magdalen College, Oxford
Guido Calabresi (born October 18, 1932) is an American legal scholar and senior judge who serves on the U.S. Court of Appeals for the Second Circuit. He is a former Dean of Yale Law School, where he has been a professor since 1959. Calabresi is considered, along with Ronald Coase and Richard Posner, a founder of the field of law and economics.
Guido is the son of the late cardiologist Massimo Calabresi and European literature scholar Bianca Maria Finzi-Contini Calabresi (1902–1982). Calabresi's parents, active in the resistance against Italian fascism, eventually fled Milan for New Haven, Connecticut, immigrating to the United States in September 1939. The family became naturalized American citizens in 1948. Guido's older brother Paul Calabresi (1930–2003) was a prominent medical and pharmacological researcher of cancer and oncology.
Calabresi married Anne Gordon Audubon Tyler, a social anthropologist, freelance writer, social activist, philanthropist and arts patron. Both received their primary education at the Foote School in New Haven, graduating in 1946 and 1948, respectively. Calabresi would continue on to receive his secondary education from Hopkins School, graduating in 1949. They reside in Woodbridge, Connecticut, and have three children. Anne Gordon Audubon Calabresi (Anne Calabresi Oldshue), a psychiatrist, graduated cum laude from Yale, attended medical school at Case Western Reserve University and completed residency at Harvard. Massimo Franklin Tyler ("M.F.T.") Calabresi, a journalist with Time magazine, also graduated from Yale. Bianca Finzi-Contini Calabresi attended Yale as well, graduating summa cum laude, and has a Ph.D. in Renaissance literature from Columbia. Calabresi's nephew, Steven G. Calabresi, is a Constitutional Law professor at Northwestern University and a co-founder of the Federalist Society.
Calabresi received his B.S. summa cum laude from Yale College in 1953, majoring in economics—a choice which would have significant connections with his later pursuits. He was then selected as a Rhodes Scholar, studying at Magdalen College, Oxford, which awarded him a B.A. with First Class Honors in 1955. He received his law degree (LL.B.) magna cum laude from Yale Law School in 1958, graduating first in his class, and was also a law review member as Note Editor of the Yale Law Journal from 1957 to 1958. Following graduation from Yale Law, Calabresi served as a law clerk for U.S. Supreme Court Associate Justice Hugo Black from 1958 to 1959. Additionally, he earned an M.A. in politics, philosophy, and economics from the University of Oxford in 1959; and is a member of Phi Beta Kappa and the Order of the Coif.
Calabresi joined the faculty of the Yale Law School upon completion of his Supreme Court clerkship, becoming the youngest ever full professor at Yale Law, and was Dean from 1985 to 1994. He now is Sterling Professor Emeritus of Law and Professorial Lecturer in Law at Yale.
Calabresi is, along with Ronald Coase, a founder of law and economics. His pioneering contributions to the field include the application of economic reasoning to tort law, and a legal interpretation of the Coase theorem. Under Calabresi's intellectual and administrative leadership, Yale Law School became a leading center for legal scholarship imbued with economics and other social sciences. Calabresi has been awarded more than forty honorary degrees from universities across the world. He is a member of the Royal Swedish Academy of Sciences.
On February 9, 1994, former President Bill Clinton nominated Calabresi as circuit judge to the U.S. Court of Appeals for the Second Circuit, he was confirmed by the United States Senate on July 18, received his commission on July 21, and entered duty on September 16, 1994, replacing Thomas Joseph Meskill. President Clinton is a 1973 graduate of the Yale Law School, although he never had Calabresi as a professor. Among Calabresi's expansive group of former students are Supreme Court Justices Samuel Alito, Clarence Thomas and Sonia Sotomayor, former United States Attorney General Michael Mukasey, feminist legal scholar and law professor at the Universities of Michigan and Chicago Catharine MacKinnon, former White House Counsel Gregory Craig, Senator John Danforth, Harvard Law School professor Richard H. Fallon, Jr., civil and human rights legal scholar Kenji Yoshino, noted torts scholar and law professor at the University of Virginia Kenneth Abraham, and New York University School of Law torts professor Catherine Sharkey. Calabresi, alone among Yale Law School faculty members, supported Thomas's nomination to the Supreme Court.
Yale, in 2006, created the Guido Calabresi Professorship of Law, with Kenji Yoshino serving as the inaugural professor of the endowed chair. Daniel Markovits is the current holder of the chair.
Calabresi is an Hororary Editor of the University of Bologna Law Review, a general student-edited law journal published by the Department of Legal Studies of the University of Bologna. 
Calabresi is the author of four books and over 100 articles on law and related subjects.
- 1961, "Some Thoughts on Risk Distribution and the Law of Torts," Yale Law Journal.
- 1970. The Costs of Accidents: A Legal and Economic Analysis. Yale University Press.
- 1972 (with Douglas Melamed), "Property Rules, Liability Rules and Inalienability: One View of the Cathedral," Harvard Law Review. (Very often cited.)
- 1982 "A Common Law For The Age of Statutes," (Harvard University Press).
- Leibovitz v. Paramount Pictures Corp., 137 F.3d 109 (2nd Cir. 1998).
- Honorary degree, University of Pavia, 1987.
- Robert B. McKay Law Professor Award, American Bar Association Tort Trial and Insurance Practice Section, 2015 
- WEDDINGS; Anne Calabresi, Robert Oldshue
- WEDDINGS; Margaret Emery, M.F.T. Calabresi
- WEDDINGS; Jonathan Gilmore, Bianca Calabresi
- Judge Calabresi biography
- Judges of the United States Courts: Calabresi, Guido
- "The Royal Swedish Academy of Sciences: Guido Calabresi". Retrieved 2009-05-01.[dead link]
- Searcey, Dionne (May 27, 2009). "Portrait of the Judge . . . As A First-Year Torts Student". Wall Street Journal. Retrieved 2009-06-01.
- Future Vacancies in the Federal Judiciary – 111th Congress
- "Honorary Board". Bolognalawreview.unibo.it. Retrieved 29 August 2016.
- Calabresi's profile at Yale Law School.
- Guido Calabresi at the Biographical Directory of Federal Judges, a public domain publication of the Federal Judicial Center.
- Appearances on C-SPAN
|Dean of Yale Law School
|Judge of the United States Court of Appeals for the Second Circuit