Ann Radcliffe (born Ann Ward, 9 July 1764 – 7 February 1823) was an English author and pioneer of Gothic fiction. Her technique of explaining apparently supernatural elements in her novels has been credited with gaining Gothic fiction respectability in the 1790s. Radcliffe was the most popular writer of her day and almost universally admired; contemporary critics called her the mighty enchantress and the Shakespeare of romance-writers, and her popularity continued through the 19th century. Interest has revived in the early 21st century, with the publication of paperback reprints and three biographies.
Radcliffe published five novels during her lifetime, which she always referred to as "romances"; a final novel, Gaston de Blondeville was published posthumously in 1826. At a time when the average amount earned by an author for a manuscript was £10, her publishers, G. G. and J. Robinson, bought the copyright for The Mysteries of Udolpho (1794) for £500, while Cadell and Davies paid £800 for The Italian (1797), making Radcliffe the highest-paid professional writer of the 1790s.