Nicholas R. Parrillo

Public Member

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Nicholas R. Parrillo is a Professor of Law at Yale, where he has been on the faculty since 2008. He specializes in administrative law and government bureaucracy and has also taught legislation, remedies, and American legal history.  His articles have been published in the Harvard Law Review, the Yale Law Journal, and elsewhere. He has received awards for his scholarship from the American Bar Association (for the year’s best work on administrative law), the Law and Society Association, and the American Society for Legal History.  He is a recipient of Yale Law School’s annual teaching award and a co-author of the current edition of Administrative Law: The American Public Law System: Cases and Materials. He served as a consultant to ACUS in 2016-17 to conduct a study of federal agency guidance documents, which provided the basis for the Conference’s Recommendation 2017-5 and for testimony that Parrillo gave on the subject before Congress.  Previously Parrillo served as a law clerk to Judge Stephen F. Williams of the D.C. Circuit. He holds a Ph.D. and law degree from Yale and a bachelor’s degree from Harvard.

[Professor Parrillo is currently the consultant on ACUS’s project on Agency Guidance.]



  • Professor of Law, Yale Law School