John Mortensen, Ph.D., STL

Associate Professor of Philosophy

B.A. (Liberal Arts), Thomas Aquinas College; S.T.M. and S.T.L., International Theological Institute, Austria; Ph.L. and Ph.D., Pontificia Università della Santa Croce, Italy; S.Th.D. cand., Universität Freiburg, Switzerland


307-332-2930, ext. 1119

Dr. Mortensen grew up in Boise, Idaho, before attending Thomas Aquinas College in California. Having received his bachelor’s degree there in 1997, he spent the next ten years in Europe, where he studied theology and philosophy in Austria, Oxford, and Rome. From 2002 to 2007 he was Assistant Professor at the International Theological Institute in Gaming, Austria, teaching courses in logic, natural philosophy, metaphysics, fundamental theology, and Trinitarian theology. During these years he also held the positions of Director of Finance and subsequently Vice President of Administration. From Fall, 2007 through Spring, 2016, he served in a variety of administrative and academic positions at Wyoming Catholic College, before departing to assist Bishop David Ricken (Wyoming Catholic’s founding bishop) at a number of apostolates in the Diocese of Green Bay. He completed a doctorate in philosophy at the Pontifical University of the Holy Cross in Rome, and is currently working on his doctoral dissertation in theology at the Pontifical University of the Holy Cross in Rome. In 2010 Dr. Mortensen was awarded the Pontifical Academies’ award for Theology by Pope Benedict XVI.

Dr. Mortensen’s research has centered on Aquinas’s doctrine of analogy, especially as it pertains to St. Thomas’s account of the mystery of the Trinity and of the divine causality of human freedom. He has served as the director of The Aquinas Institute’s Opera Omnia project from its inception, and is currently working on the similar project for the works of St. Augustine.

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Scholarly Interests

Aristotle St. Thomas Aquinas Spiritual theology Music theory Catholic literature Computer programming