Hester Maria Elphinstone, Viscountess Keith, born Hester Maria Thrale (17 September 1764 – 31 March 1857), was a British literary correspondent and intellectual.
She was the eldest child of Hester Thrale, diarist, author and confidante of Samuel Johnson, and Henry Thrale, a wealthy brewer and patron of the arts.
She became the second wife of George Elphinstone, 1st Viscount Keith.
(Original text: Yung, Kai Kin; Wain, John; Robson, W. W. & Fleeman, J. D. (1984), Samuel Johnson, 1709â??84, p. 115 London: Herbert Press, ISBN 090696945X .)