Lord Claud John Hamilton PC (20 February 1843 – 26 January 1925) was a British Member of Parliament (MP) during the Victorian era.
Born the second son of James Hamilton, 2nd Marquess of Abercorn (later the 1st Duke of Abercorn) and his wife Lady Louisa Jane Russell, Hamilton was educated at Harrow School, and served in the Grenadier Guards and the Royal Inniskilling Fusiliers. In 1865, he became Conservative MP for Londonderry City until 1868 when he was appointed a Lord of the Treasury in Benjamin Disraeli's first ministry. In 1869, he became MP for King's Lynn until 1880, for Liverpool from 1880 to 1885, for Liverpool West Derby from 1885 until he resigned his seat in 1888 and for Kensington South from January 1910 to 1918.
Hamilton married Carolina Chandos-Pole (19 July 1857–—21 September 1911) (a granddaughter of the 5th Earl of Harrington) on 20 July 1878 and they had two children: