Mary Frances Berry is an American historian, writer, lawyer, activist and professor who focuses on U.S. constitutional and legal, African-American history. Berry is the Geraldine R. Segal Professor of American Social Thought where she teaches American legal history at the Department of History, School of Arts & Sciences at the University of Pennsylvania. She is the former chairwoman of the United States Commission on Civil Rights. Previously, Berry was provost of the College of Behavioral and Social Science at University of Maryland, College Park, and was the first African American chancellor of the University of Colorado at Boulder.