Linda Trinkaus Zagzebski (born 1946) is an American philosopher. She is the Emerita George Lynn Cross Research Professor, as well as Emerita Kingfisher College Chair of the Philosophy of Religion and Ethics, at the University of Oklahoma. She writes in the areas of epistemology, philosophy of religion, and virtue theory. Education and career Zagzebski received her Bachelor of Arts degree from Stanford University, her Master of Arts degree from University of California, Berkeley, and her Doctor of Philosophy degree from University of California, Los Angeles in 1979 with a dissertation on "Natural Kinds" under the supervision of Tyler Burge. She taught at Loyola Marymount University from 1979 to 1999, before joining the University of Oklahoma. She delivered the Wilde Lectures in Natural Religion at Oxford University in the spring of 2010 on epistemic authority. She is (2015–2016) president of the American Philosophical Association Central Division, and gave the Gifford Lectures at the University of St. Andrews in the fall of 2015 on the topic of exemplarist virtue theory. She is past president of the American Catholic Philosophical Association (1997–1998), and past president of the Society of Christian Philosophers (2004–2007). In 2022, she was elected a Fellow of the American Academy of Arts & Sciences. Philosophical work Her research in recent years has consisted of topics such as the intersection of ethics and epistemology, religious epistemology, religious ethics, virtue theory, and the varieties of fatalism. She delivered the Wilde Lectures in Natural Religion at Oxford University in the spring of 2010 on epistemic authority. She is (2015–2016) president of the American Philosophical Association Central Division, and gave the Gifford Lectures at the University of St. Andrews in the fall of 2015 on the topic of exemplarist virtue theory. She is past president of the American Catholic Philosophical Association (1997–1998), and past president of the Society of Christian Philosophers (2004–2007). Epistemology Zagzebski is a pioneer in the field of virtue epistemology. In Virtues of the Mind (1996), she sets out to solve certain problems in modern epistemology by developing an Aristotelian version of virtue theory, and in the course of this project she lays out a general analysis of virtue. In Divine Motivation Theory (2004) she deals extensively with problems in the relationship between reason, faith, and ethics. She has done work on questions of epistemic value including the "espresso machine" thought experiment (a predecessor to the swamping problem) as a counter