Elizabeth Sackville-West, Countess De La Warr and 1st Baroness Buckhurst (11 August 1795 – 9 January 1870) was a British peeress.
Born Lady Elizabeth Sackville, she was the youngest daughter of John Sackville, 3rd Duke of Dorset and his wife, Arabella Cope. On 21 June 1813 she married George Sackville-West, 5th Earl De La Warr and they had nine children:
On 27 April 1864, Lady De La Warr was created Baroness Buckhurst, of Buckhurst in the County of Sussex, by Queen Victoria with a special remainder to her second surviving son, Reginald and the heirs male of his body. Failing him, to her third and fourth son and their heirs male with a remainder that if any of the heirs inherited the barony and the earldom of De La Warr, then the barony should pass to a younger brother or younger son of the heirs male. The patent was worded to prevent the barony and earldom being held by the same person. However, when Reginald inherited the barony in 1870 and subsequently the earldom in 1873, his brother, Mortimer, tried to make a claim to the barony, but the House of Lords deemed the remainders invalid. Mortimer was instead created Baron Sackville as a consolation.