Andrew Louth FBA (/laʊθ/; born 11 November 1944) is an English theologian. He is an emeritus professor of patristic and Byzantine studies in the Department of Theology and Religion of Durham University.^[2] Louth has been at Durham University since 1996. Previously he taught at the University of Oxford (mostly patristics) and at Goldsmiths' College in Byzantine and early medieval history. He is a fellow of the British Academy and was a member of the British Academy Council from 2011 to 2014.^[2][3] He was President of the Ecclesiastical History Society (2009–10).^[4]

Born on 11 November 1944 in Louth, Lincolnshire, he was educated at the universities of Cambridge and Edinburgh.^[5]

Formerly an Anglican priest, he converted to Eastern Orthodoxy in 1989 and was ordained as an Eastern Orthodox priest in 2003.

• Louth, Andrew (2007), Greek East and Latin West: The Church, AD 681–1071, Church History, 3, St. Vladimirs Seminary Press, ISBN 978-0881413205
• Louth, Andrew (2002), St. John Damascene: Tradition and Originality in Byzantine Theology, Oxford early Christian studies., Oxford University Press, ISBN 9780199275274
• Louth, Andrew; Raitt, Jill (1998), Wisdom of the Byzantine Church: Evagrios of Pontos and Maximos the Confessor, Paine Lectures in Religion, 1997, Dept. of Religious Studies, University of Missouri, OCLC 38570047
• Louth, Andrew (1996), Maximus the Confessor, Early Church Fathers, Routledge London, ISBN 0203991273
• Louth, Andrew (1989), Discerning the Mystery: An Essay on the Nature of Theology, Clarendon, ISBN 0198261969
• Louth, Andrew; Oden, Thomas C.; Conti, Marco (2001). Genesis 1–11; Volume 1. Taylor & Francis. ISBN 1579582206.

• Russian Orthodox Diocese of Sourozh