Father Thomas G. Weinandy (born January 12, 1946 in Delphos, Ohio) is a Catholic priest and a leading scholar in the Roman Catholic Church. He is a prolific writer in both academic and popular works, including articles, books, and study courses.
Father Weinandy entered the Order of Friars Minor Capuchin in 1966, was solemnly professed in 1970, and was ordained to the priesthood in 1972. He earned a B.A. in Philosophy at St. Fidelis College, Herman, Pennsylvania in 1969, an M.A. in Systematic Theology at Washington Theological Union in 1972, and a Doctorate in Historical Theology at King's College London in 1975. He lived in and was an active member of the Mother of God Community, Washington, for 19 years before leaving to teach at Oxford University.
His major fields of specialty are History of Christology, especially Patristic, Medieval and Contemporary, History of Trinitarian Theology, History of Soteriology, and Philosophical Notions of God. He has held academic positions at Georgetown University, Mount St. Mary's University in Emmitsburg, Maryland, Franciscan University of Steubenville, and Loyola College, Baltimore. Father Weinandy served at the University of Oxford from 1991 to 2005.
He was the Warden of Greyfriars (1993–2004)(Honorary Fellow 2004) and tutor and lecturer in History and Doctrine in the Faculty of Theology. He was Chairman of the Faculty of Theology from 1997 to 1999. He is a member of the Catholic Theological Society of America, the Fellowship of Catholic Scholars, the Catholic Theological Society of Great Britain, the North American Patristics Society and the Association Internationale D'Etudes Patristiques, as well as the Academy of Catholic Theology. Since 2005, he has been the Executive Director of the Secretariat for Doctrine and Pastoral Practices of the United States Conference of Catholic Bishops (USCCB), until he was replaced in early 2013. The Secretariat provides staff support for USCCB Committees on Doctrine, on Pastoral Practices and on Science and Human Values, as well as for Ad Hoc Committees on Health Care Issues and the Review of Scripture Translations.