Lucy Clifford (2 August 1846 – 21 April 1929), better known as Mrs. W. K. Clifford, was a British novelist and journalist, and the wife of William Kingdon Clifford.
Lucy Clifford was born Lucy Lane in London, the daughter of John Lane of Barbados. She married the mathematician and philosopher William Kingdon Clifford in 1875. After his death in 1879, she earned a prominent place in English literary life as a novelist, and later as a dramatist. Her best-known story, Mrs Keith's Crime (1885), was followed by several other volumes, such as Aunt Anne (1892). She also wrote The Last Touches and Other Stories (1892) and Mere Stories (1896); and a play, A Woman Alone (1898). She is perhaps most often remembered, however, as the author of The Anyhow Stories, Moral and Otherwise (1882), a collection of stories written for her children.
Lucy Clifford also wrote cinematic adaptations of her short stories and plays. At least two films were produced from her adaptations: The Likeness of the Night (1922) directed by Percy Nash, and Eve's Lover (1925) directed by Roy Del Ruth.
She had a wide circle of literary friends, amongst them Henry James. Her daughter Ethel Clifford (d. 1959), later Lady Dilke, having married Sir Fisher Wentworth Dilke, 4th Baronet (1877–1944) in 1905, was a published poet.
Lucy Lane Clifford died in 1929, and was buried alongside her husband in Highgate Cemetery in London.
In 2004 Gowan Dawson described Lucy's efforts to uphold the reputation of Clifford after his death: