Grace Elvina Curzon (née Hinds, formerly Duggan), Marchioness Curzon of Kedleston, GBE (1879–1958) was a United States-born British marchioness and the second wife of George Curzon, British parliamentarian, cabinet minister, and former Viceroy of India. She was a daughter of J. Monroe Hinds, former United States Minister to Brazil, and Lucy Trillia, from Montevideo, Uruguay.
Born Grace Elvina Hinds in Alabama, she grew up in Decatur. Her first husband was Alfred Huberto Duggan of Buenos Aires, Argentina, with whom she had three children, including two sons – Alfred Duggan, historical novelist, and Hubert Duggan, later a British Member of Parliament. Her daughter, Grace Lucille Duggan (Marcella Rice) (1907–1995), was the mother of Caroline Helen Rice (b. 1931), wife of Robert Windsor-Clive, 3rd Earl of Plymouth.
Grace Duggan was a wealthy woman after her husband's death, inheriting large estancias in South America. In 1916, Philip Alexius de László painted her as a widow.
In 1917, aged 38, she became the second wife of Lord Curzon. In 1923, when Curzon was passed over for the office of Prime Minister partly on the advice of Arthur Balfour, Balfour joked that Curzon 'has lost the hope of glory but he still possesses the means of Grace".