John Savile, 1st Baron Savile, GCB, PC (6 January 1818 – 28 November 1896), was a British diplomat who served as Ambassador to Italy from 1883 to 1888.
Born John Lumley-Savile, he was the eldest of the five illegitimate children of John Lumley-Savile, 8th Earl of Scarbrough and the grandson of John Lumley-Savile, 7th Earl of Scarbrough. The latter had succeeded to the Savile estates through his grandmother Barbara Savile, sister and heiress of Sir George Savile, 8th and last Baronet, of Thornhill (see the Marquess of Halifax) and wife of Richard Lumley-Saunderson, 4th Earl of Scarbrough. Lumley-Savile's mother was of French origin. He served as Attaché at the British embassies in Berlin from 1842 to 1849, in St Petersburg from 1849 to 1854 and as Secretary of Legation in Washington from 1854 to 1858, in Madrid from 1858 to 1860 and in Constantinople in 1860. The latter year Lumley-Savile was appointed Secretary to the Embassy in St Petersburg, in which post he remained until 1868. While in Russia he was made a member of the Russian Imperial Academy in 1866. Lumley-Savile later served as Envoy Extraordinary and Minister Plenipotentiary to Saxony from 1866 to 1867. He was then Envoy Extraordinary and Minister Plenipotentiary to the Swiss Confederation until 1868, when he was transferred to Belgium until 1883. The latter year he was admitted to the Privy Council and appointed Ambassador to Italy, a post he held until 1888.