Guido Calabresi (born October 18, 1932) is an Italian-born American jurist who serves as a senior circuit judge of the United States 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.

Career output and lasting influence
Opinions attributed per year · peak 17/year
Later decisions citing those opinions, per year · peak 1,431/year
Second Circuit Court of Appeals · 1994–2009
Both charts share the same year axis. Opinion counts include only opinions in our corpus attributed to this judge so far — a year at zero can mean an attribution gap, not judicial silence. Influence typically outlasts the career: citations keep climbing after the last opinion.
- Gender
- Male
- Race
- White
Prior employment
- Yale Law SchoolProfessor · 1959–1994
- ↳dean · 1985–1994
- Woodbridge, ConnecticutTown selectman · 1971–1975
Law clerk , Hon. Hugo Black · 1958–1959
Appointments
1994–2009 · Appointed by William J. Clinton (Democratic)
Education
LL.B. · 1958- University of Oxford, Magdalen CollegeB.A. · 1955
- Yale UniversityB.S. · 1953