Thomas A. Green is the John P. Dawson Collegiate Professor Emeritus of Law and professor emeritus of history at the University of Michigan. 

Green taught medieval and English history and American constitutional history at Bard College. At U-M he taught English and American legal history to both law students and to students in the College of Literature, Science, and the Arts.

His primary research interest is the history of criminal law, which he treats as central to the history of the state and to the history of the relationships among the state, society at large, the local community, and the individual. Within that field, he emphasizes the cultural foundations of law and legal institutions, with a main emphasis on the political, social, and intellectual history of the criminal trial jury and ideas regarding criminal responsibility.

He is the author of Verdict According to Conscience: Perspectives on the English Criminal Trial Jury, 1200-1800 (1985) and Freedom and Criminal Responsibility in American Legal Thought (2014). He served for 25 years as the editor of Studies in Legal History, sponsored by the American Society for Legal History, and was the society’s president from 1999 to 2001.

Green is also co-editor of On the Laws and Customs of England: Essays in Honor of Samuel E. Thorne (1981) and Twelve Good Men and True: The Criminal Trial Jury: 1200-1800 (1985). He is currently working on the relationship between ideas about the jury and ideas about criminal responsibility in the English and American past. This project will complete his work on the two aspects of freedom in Anglo-American criminal justice history to which he has devoted his career: political liberty and free will.