Archibald Brabazon Sparrow Acheson, 4th Earl of Gosford, KP (19 August 1841 – 11 April 1922) was a British peer. The son of Archibald Acheson, 3rd Earl of Gosford, he was born at Worlingham Hall, Suffolk, in 1841, and educated at Harrow School; and succeeded to the earldom upon the death of his father in 1864. He was Lord of the Bedchamber to Edward VII, Prince of Wales between 1886 and 1901, and bore the Queen consort's Ivory rod At Edward VII's King's coronation. He became vice-admiral of Ulster, also received the Order of the Dannebrog, and the Order of the White Eagle (Russian Empire). Since there are two United Kingdom peerages (e.g. Baron Worlingham) subsumed in that Irish Earldom, he was entitled to an automatic seat in the House of Lords. He was Lord Lieutenant of Armagh from 1883