Teitelbaum Becomes Interim Dean; Treanor Named Agnes Williams Sesquicentennial Professor

After 15 years at the helm, William M. Treanor stepped down today as Dean of Georgetown Law, Executive Vice President and the Paul Regis Dean Leadership Chair. He is succeeded by Joshua C. Teitelbaum, David Belding Professor of Law, who will serve as Interim Dean and Executive Vice President until a permanent dean is named.

Arriving from Fordham Law School in 2010, Treanor helped transform Georgetown Law, expanding the faculty, tripling experiential offerings for students in clinical, externship and practicum programs, more than doubling financial aid, and launching public interest fellowships that benefitted more than 500 graduates over the course of his tenure. He also raised record sums for the Law Center, including an unprecedented $100 million for Tsai Hall, a new flagship building. In recognition of his contributions to scholarship on the U.S. Constitution and service to the Law Center, Treanor will become the Agnes Williams Sesquicentennial Professor of Constitutional Law and Constitutional History and Dean Emeritus.

[Read more about Dean Treanor’s tenure here.]

“I am grateful to the entire Georgetown Law community – to our students and faculty, to our alumni and staff, for so many wonderful memories and for all our work together during my time as dean,” Treanor said. “I am looking forward to returning to teaching and, at this crucial moment, to contributing as a lawyer and as a scholar to the great constitutional debates of our day.” Treanor will be on sabbatical leave during the 2025-6 academic year, completing the manuscript for his forthcoming book, Fathers of the Constitution: Triumph, Tragedy, and the Creation of the American Republic.

Teitelbaum, whose scholarly interests focus on decision theory and the interplay between microeconomics and the law, joined the Law Center in 2009. He served as Associate Dean for Research and Academic Programs from 2015-17. The co-editor of the Research Handbook in Behavioral Law and Economics and a Fellow at the Georgetown Center for Economic Research, Teitelbaum also holds a courtesy appointment as Professor of Economics. He earned a Ph.D. in Economics from Cornell University and a J.D. from Harvard Law School.

“It is a privilege to serve this remarkable community in the year ahead. I am committed to advancing our mission to educate lawyers who will serve the law in the interests of justice and social welfare,” Teitelbaum said. “At Georgetown, we stand for the rule of law, for academic freedom and for the open exchange of diverse ideas – values I hold deeply and will continue to uphold.”