Lady Hester Lucy Stanhope (12 March 1776 – 23 June 1839) was a British socialite, adventurer and traveler. Her archaeological expedition to Ashkelon in 1815 is considered the first modern excavation in the history of Holy Land archeology. Her use of a medieval Italian document is described as "one of the earliest uses of textual sources by field archaeologists".
Lady Hester Lucy Stanhope was the eldest child of Charles Stanhope, 3rd Earl Stanhope, by his first wife, Lady Hester Pitt. She was born at her father's seat of Chevening and lived there until early in 1800, when she was sent to live with her grandmother, Hester Pitt, Countess of Chatham, at Burton Pynsent.
In August 1803, she became chief of the household of her uncle, William Pitt the Younger. In his position as British Prime Minister, Pitt, who was unmarried, needed a hostess. Lady Hester sat at the head of his table and assisted in welcoming his guests; she became known for her beauty and conversational skills. When Pitt was out of the office she served as his private secretary. She was also the prime initiator of the gardens at Walmer Castle during his tenure as Lord Warden of the Cinque Ports. Britain awarded her an annual pension of £1200 after Pitt's death in January 1806. After living for some time at Montagu Square in London, she moved to Wales and then left England for good in February 1810 after the death of her brother. A romantic disappointment is said to have prompted her decision to go to a long sea voyage—Her niece (Wilhelmina Powlett, Duchess of Cleveland) suspected she and Lieutenant-General Sir John Moore might have considered marrying.