James Haughton Langston (25 May 1796 – 19 October 1863) was a British landowner and Member of Parliament. He was the son of John Langston of Sarsden House, Oxfordshire, and his wife, Sarah. He was educated at Eton College (1811), Christ Church, Oxford (1814). In 1812 he succeeded his father, inheriting the Sarsden estate. He was appointed High Sheriff of Oxfordshire for 1819–20 and verderer of Wychwood Forest. He served as MP for New Woodstock from 1820 to 1826 and Oxford from 1826 to 1834 and from 1841 to 1863.