George John James Hamilton-Gordon, 5th Earl of Aberdeen (28 September 1816 – 22 March 1864), styled Lord Haddo before 1860, was a British peer and Liberal Party politician.

[1] On 5 November 1840, he married Mary Baillie (a sister of the future 10th Earl of Haddington) at Taymouth Castle.

They had six children: His uncle, William Gordon, had retired as Member of Parliament for Aberdeenshire in 1854 and Haddo put himself forward as his successor.

Despite being absent from Scotland and not having canvassed the constituency, Haddo won the election and returned to take his seat in the House of Commons, in good health, a year later.

For part of his time in Egypt, he distributed Bibles with the American missionary Gulian Lansing, who later wrote a memoir about their journey.