Patricia Edwina Victoria Knatchbull, 2nd Countess Mountbatten of Burma, Baroness Brabourne,, was a British peeress and a third cousin of Queen Elizabeth II. She was the elder daughter of Admiral of the Fleet the 1st Earl Mountbatten of Burma and of heiress Edwina Ashley. 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 King Charles III. She was a great-great-granddaughter of Queen Victoria.

Edwina Cynthia Annette Mountbatten, Countess Mountbatten of Burma, was an English heiress, socialite, relief worker and the last vicereine of India as the wife of Rear Admiral The 1st Viscount Mountbatten of Burma.