Mary Frances Berry (born February 17, 1938) is an American Historian; she is the Geraldine R. Segal Professor of American Social Thought, and the Professor of History at the University of Pennsylvania. She is also the former chairwoman of the United States Commission on Civil Rights, and the former board chair of Pacifica Radio. She is a past president of the Organization of American Historians, the primary professional organization for historians of the United States.
