Patricia Knatchbull, 2nd Countess Mountbatten of Burma (d. 2017)
Patricia Edwina Victoria Knatchbull, 2nd Countess Mountbatten of Burma, Lady Brabourne, (née Mountbatten; 14 February 1924 – 13 June 2017) was a British peeress and the third cousin of Queen Elizabeth II. She was the elder daughter of heiress Edwina Ashley, a patrilineal descendant of the Earls of Shaftesbury, first ennobled in 1661, and Admiral of the Fleet the 1st Earl Mountbatten of Burma. She was the elder sister of Lady Pamela Hicks, a first cousin of Prince Philip, Duke of Edinburgh, and the last surviving baptismal sponsor to Charles, Prince of Wales.

Lady Mountbatten succeeded her father when he was assassinated in 1979, as his peerages had been created with special remainder to his daughters and their heirs male. This inheritance accorded her the title of countess and a seat in the House of Lords, where she remained until 1999, when the House of Lords Act 1999 removed most hereditary peers from the House.