Henry de Rosenbach Walker (30 May 1867 – 31 July 1923) was a British Liberal Party politician and author.
He was a son of R. F. Walker of Shooter's Hill, Kent and Marie von Rosenbach, of Karritz, Estonia.
He travelled extensively in Russia, Central Asia, the Far East, North America, the West Indies, and the Antipodes.
He was then elected Liberal MP for the Melton Division of Leicestershire in 1906, gaining the seat from the Conservatives.
[4] He was elected to the London County Council as a Liberal Party backed Progressive candidate for St Pancras East in 1913.