James Mangles (27 July 1768 – 25 September 1838) was an English merchant and politician.
The son of Robert Mangles, a ship chandler in Wapping, he went into his father's business together with his brother John.
They owned at least four vessels that were employed in the South Sea whale fishery.
[1] During the 1830s he bought Down Place, Surrey, from Edward Turnour, 3rd Earl Winterton.
[3] He became a director of the East India Company and served as High Sheriff of Surrey (1808–1809).