David Israel Kertzer (born February 20, 1948) is an American anthropologist, historian, and academic, specializing in the political, demographic, and religious history of Italy. He is the Paul Dupee, Jr. University Professor of Social Science, Professor of Anthropology, and Professor of Italian Studies at Brown University. His book The Pope and Mussolini: The Secret History of Pius XI and the Rise of Fascism in Europe (2014) won the 2015 Pulitzer Prize for Biography or Autobiography.