Lucy Clementina Davies (née Drummond de Melfort; 21 November 1795 – 27 April 1879) was a French-born author of Scottish Jacobite ancestry, known as a writer by the publication in 1872 of her two-volume Recollections of Society in France and England, a work which contains much of her family history and interesting details of the court of France under the Bourbons and the Bonapartes.
Davies was born at the Château of St. Germain to Marie Elizabeth Luce de Longuemarre (died 1824) and Lord Leon Maurice Drummond de Melfort (1761–1826), the fourth son of James Drummond, 3rd Duke of Melfort in France.
On 8 September 1823, in Marylebone, London, she was married to Francis Henry Davies, a registrar of the Court of Chancery.
They had one son and two daughters, including Lucy Elizabeth Drummond Davies, a children's writer.
Lady Lucy Clementina Drummond, Mrs. Davies, died on 27 April 1879 in Kensington, London at 22 Palace Gardens Terrace, the residence of her son-in-law John Sale Barker, barrister-at-law.