Mark C. Murphy received his Ph.D. in 1993 from the University of Notre Dame. After spending the first two years of his career at the University of Hawaii, he came to Georgetown, where he is now Professor of Philosophy.

His research interests include moral, political, and legal philosophy and the history of early modern philosophy. His research focuses on natural law theory both in its historical manifestations and as a live option for jurisprudence and the theory of practical reasoning. He is the author of Natural Law and Practical Rationality (Cambridge, 2001) and An Essay on Divine Authority (Cornell, 2002), and is editor of Alasdair MacIntyre (Cambridge, 2003). He is currently at work on Natural Law in Politics and Jurisprudence.