Hilary Jane Williams, Lady Williams of Oystermouth (née Paul; born 1957), is an English Anglican theologian and writer.

Williams was born on 4 March 1957^[1] in Trivandrum, India, one of five sisters.^[2] Her father, Geoffrey Paul, former Bishop of Bradford, was then serving as a missionary priest at Palayamkottai and later Kerala.^[3] Her father was a member of the faculty and later became the principal of the Kerala United Theological Seminary at Kannammoola, where she spent part of her childhood.^[4] She studied theology at Clare College, Cambridge, and then worked in theological publishing and education. For three years she wrote a Sunday readings column for the Church Times (published by SPCK as Lectionary Reflections) and now works part-time for Redemptorist Publications, as a visiting lecturer at King's College London. She is assistant dean and lecturer at St Mellitus College (formerly St Paul's Theological Centre) in London.^[5]

Williams has been married since July 1981 to Rowan Williams,^[6] who was appointed as the 104th Archbishop of Canterbury in 2002. They have a daughter named Rhiannon (born 1988) and a son named Pip (born 1996).^[7] Following her husband's retirement as Archbishop of Canterbury and his subsequent peerage, Williams is entitled to the style and title of Lady Williams of Oystermouth.

• Bread, Wine and Women: the ordination debate in the Church of England (with Sue Dowell), Virago, London, 1994. ISBN 1853817309
• Perfect Freedom (Borders), Canterbury Press, Norwich, 2001. ISBN 1853114375
• Lectionary Reflections: Year C, SPCK, London, 2003. ISBN 0281055297
• Lectionary Reflections: Year A, SPCK, London, 2004. ISBN 0281055270
• Lectionary Reflections: Year B, SPCK, London, 2005. ISBN 0281055289
• Approaching Christmas, Lion, Oxford, 2005. ISBN 0745951988
• Angels, Lion, Oxford, 2006. ISBN 0745952224
• Who Do You Say That I Am? Exploring Images of Jesus (Church Times Study Guides), Canterbury Press, Norwich, 2006. ISBN 1853116602
• The Fellowship of the Three: Exploring the Trinity (Church Times Study Guides), Canterbury Press, Norwich, 2006. ISBN 1853116998
• The Mighty Tortoise: Exploring the Church (Church Times Study Guides), Canterbury Press, Norwich, 2006. ISBN 1853117153
• Moving Mountains (Church Times Study Guides), Canterbury Press, Norwich, 2007. ISBN 1853117889
• Approaching Easter, Lion, Oxford, 2006. ISBN 0745951996
• A Christian Funeral: A Guide for the Family, Redemptorist Publications, Chawton, 2006. ISBN 0852313160
• Marriage, Mitres and Being Myself, SPCK, London, 2008. ISBN 0281060185
• Lost for Words? A Sermon Resource for the Anglican Three-Year Cycle, Redemptorist Publications, Chawton, 2009. ISBN 0852313691
• Lectionary Reflections: Years A, B & C, SPCK, London, 2011. ISBN 0281065799
• Faces of Christ: Jesus in Art, Lion, Oxford, 2011. ISBN 0745955223
• "Why Did Jesus Have to Die?"