Gil Seinfeld is the Robert A. Sullivan Professor of Law at Michigan Law; he served as associate dean for academic programming from 2016 to 2021. He teaches and writes about federal jurisdiction, the constitutional law of federalism, and civil procedure.

Seinfeld is currently working on a book about legal education, focusing on student mental health and diversity, equity, and inclusion. Seinfeld's recent scholarly work explores the role of national unity in shaping the contours of our constitutional law.

Before joining the faculty, Seinfeld was an associate at the law firm of Wilmer Cutler Pickering Hale & Dorr, where he focused on appellate litigation. 

In between his clerk​ships, he was a fellow in the Program in Law and Public Affairs at Princeton University. Seinfeld is a two-time winner (in 2006 and 2023) of the Law School's L. Hart Wright Award for Excellence in Teaching.

His scholarly work has been published in numerous law reviews, including the Michigan Law Review, the University of Pennsylvania Law Review, and the California Law Review. He is admitted to practice in New York.