John Greil

John Greil researches and teaches on religion and law, and serves as a Clinical Professor in the Law & Religion Clinic. 

Prior to joining Texas Law, John was an associate at Vinson & Elkins LLP in Houston. There, he practiced antitrust law and commercial litigation, and represented clients in foreign jurisdictions, the Supreme Court of the United States, and every level of the Texas legal system.  He also maintained a pro bono practice including immigration law, prison litigation, indigent defense, as well as First Amendment issues.  He served on the leadership committees of the Law & the Media and Antitrust sections of the Houston Bar Association, as well as that of the Saint Thomas More Society. 

His scholarly work on competition law and constitutional theory has appeared in The Villanova Law Review and The Harvard Journal of Law and Public Policy, and has been cited in numerous law review articles and book-length works. He serves as the faculty advisor of the Texas Review of Law and Politics.  

John clerked for Judge Nathaniel M. Gorton of the United States District Court for the District of Massachusetts, Judge Paul Barbadoro of the United States District Court for the District of New Hampshire, and Judge Jennifer Walker Elrod of the United States Court of Appeals for the Fifth Circuit. Before law school, he taught high school math in Jacksonville, Florida, and English language and American culture in Germany through the Fulbright English Teaching Assistantship program. 

John graduated cum laude from Harvard Law School, where he served on the Harvard Journal of Law and Public Policy, and worked as a research assistant to Professors Mary Ann Glendon, Charles Fried, and Richard Lazarus. He graduated cum laude from the University of Notre Dame, where he majored in the school’s Great Books program and German, and wrote an undergraduate thesis on the role of religion in the works of Francis Bacon.