The title Baron Hamilton, of Hambledon in the County of Leicester, was a title created in the Peerage of Great Britain in 1776. It was created for Elizabeth Douglas-Hamilton (née Gunning), Duchess of Hamilton, wife since 1752 of James Douglas-Hamilton, 6th Duke of Hamilton . The Duke of Hamilton died in 1758, and his Duchess remarried the following year, to John Campbell, who later became Marquess of Lorne in 1761 and 5th Duke of Argyll in 1770. She died in 1790, and her Barony passed to her only surviving son from her first marriage, the 8th Duke of Hamilton. On his death without male issue, the barony passed to his half-brother the Marquess of Lorne, the Duchess's eldest surviving son by her second marriage. Lord Lorne succeeded his father as 6th Duke of Argyll in 1806, and the Barony of Hamilton has since remained united with that title.
Barons Hamilton (1776)
- Elizabeth Campbell, 1st Baroness Hamilton (1733-1790)
- Douglas Douglas-Hamilton, 8th Duke of Hamilton, 2nd Baron Hamilton (1756-1799)
- George William Campbell, 3rd Baron Hamilton , styled Marquess of Kintyre and Lorne, later 6th Duke of Argyll (1768-1839)
- John Douglas Edward Henry Campbell, 7th Duke of Argyll, 4th Baron Hamilton (1777-1847)
- George Douglas Campbell, 8th Duke of Argyll, 5th Baron Hamilton (1823-1900)
- John George Edward Henry Douglas Sutherland Campbell, 9th Duke of Argyll, 6th Baron Hamilton (1845-1914)
- Niall Diarmid Campbell, 10th Duke of Argyll, 7th Baron Hamilton (1872-1949)
- Ian Douglas Campbell, 11th Duke of Argyll, 8th Baron Hamilton (1903-1973)
- Ian Campbell, 12th Duke of Argyll, 9th Baron Hamilton (1937-2001)
- Torquhil Ian Campbell, 13th Duke of Argyll, 10th Baron Hamilton (b. 1968)