Alexander Douglas-Hamilton, 10th Duke of Hamilton

His Grace The Duke of Hamilton
The 10th Duke of Hamilton, by Henry Raeburn
Born	(1767-10-03)3 October 1767 St. James Square, London
Died	18 August 1852(1852-08-18) (aged 84) 12 Portman Square, London
Resting place	Bent Cemetery, Hamilton
Title	10th Duke of Hamilton
Tenure	1819–1852
Other titles	7th Duke of Brandon
Offices	Lord Lieutenant of Lanarkshire
Predecessor	Archibald Hamilton
Successor	William Hamilton
Spouse(s)	Susan Euphemia Beckford
Issue	William Hamilton Susan Hamilton
Parents	Archibald Hamilton Harriet Stewart

Alexander Hamilton, 10th Duke of Hamilton, 7th Duke of Brandon KG PC FRS FSA (3 October 1767 – 18 August 1852) was a Scottish politician and art collector.

Born on 3 October 1767 at St. James's Square, London, a son of Archibald Hamilton, 9th Duke of Hamilton, he was educated at Harrow School and at Christ Church, Oxford.

Hamilton was a Whig, and his political career began in 1802, when he became MP for Lancaster. He remained in the House of Commons until 1806, when he was appointed to the Privy Council, and Ambassador to the court of St. Petersburg until 1807; additionally, he was Lord Lieutenant of Lanarkshire from 1802 to 1852. He received the numerous titles at his father's death in 1819. He was Lord High Steward at King William IV's coronation in 1831 and Queen Victoria's coronation in 1838, and remains the last person to have undertaken this duty twice. He became a Knight of the Garter in 1836. He held the office of Grand Master of the Freemasons [Scotland] between 1820 and 1822. He held the office of President of the Highland and Agricultural Society of Scotland between 1827 and 1831. He held the office of Trustee of the British Museum between 1834 and 1852.