Mitt Regan is McDevitt Professor of Jurisprudence, Director of the Center on Ethics and the Legal Profession, and Coordinator of the Program Lawyers and Constitutional Democracy. on Law, Ethics, and International Security Georgetown University Law Center. His work focuses on legal ethics, the legal profession and the rule of law in constitutional democracies; international law and the use of force;  and legal and ethical issues relating to military applications of artificial intelligence.  He is a board member of Lawyers Defending American Democracy, a non-partisan organization for which he helps coordinate amicus briefs.

Professor Regan also is a  member of the International Advisory Board of the Responsible by Design Institute, which is dedicated to promoting the responsible design, development and governance of emerging military technologies, including artificial intelligence enhanced and autonomous weapon systems. He is currently a member of a project on Ethical Risk Management for AI-Enabled Weapons: A Systems Approach with the Peace Research Institute of Oslo.

Professor Regan’s books on legal ethics and the legal profession include BigLaw: Money and Meaning in the Modern Law Firm (Chicago: University of Chicago Press 2021)(with Lisa H. Rohrer); Confidence Games: Lawyers, Accountants, and the Tax Shelter Industry (MIT Press 2014)(with Tanina Rostain); Eat What You Kill: The Fall of a Wall Street Lawyer (University of Michigan Press 2004) (Tanina Rostain & Mitt Regan); and the casebooks Professional Responsibility: Problems and Materials (14th and 15^th eds.) )(Foundation Press 2023 & 2026) (with Thomas D. Morgan and John S. Dzienkowski); Professional Responsibility: Representing Business Organizations (West Academic Publishing 2016)(with John K. Villa); and Legal Ethics and Corporate Practice (Thomson/West 2005) (with Jeffrey D. Bauman).

Professor Regan’s books on international law and national security include Drone Strike: Analyzing the Impacts of Targeted Killing (Palgrave Macmillan 2022), Hybrid Threats and Grey Zone Conflict: The Challenge for Liberal Democracies (Oxford University Press 2024)(Mitt Regan & Aurel Sari, eds); Between Crime and War: Alternative Legal Frameworks for Asymmetric Conflict (Oxford University Press 2022) (Claire Finkelstein, Christopher Fuller, Jens David Ohlin & Mitt Regan eds); and National Security Intelligence and Ethics (Routledge 2022) (Seumas Miller, Mitt Regan & Patrick F. Walsh eds).

Professor Regan is a participant has been a participant on major interdisciplinary international projects on national security that include Cumulative Civilian Harm in War: Addressing the Hidden Human Toll of the Law’s Blind Spot; Intelligence and National Security: Ethics, Efficacy, and Accountability; Global Terrorism and Collective Responsibility: Redesigning Police, Military, and Intelligence Agencies in Liberal Democracies; and a US interdisciplinary project on Split-Second Morality: Understanding Ethical Decision-Making in Combat. He has also worked with the Atrocity Crimes Advisory Group in assisting the Ukraine Prosecutor General’s Office develop cases for prosecution of war crimes and other atrocities in connection with the armed conflict that began with the Russian full-scale invasion of Ukraine in 2022.

Before joining Georgetown, Professor Regan worked as an associate at Davis Polk and Wardwell, and served as law clerk to then-Judge Ruth Bader Ginsburg on the US Court of Appeals for the DC Circuit and Justice William J. Brennan, Jr. on the Supreme Court of the United States.