James Hamilton, 1st Duke of Hamilton
| The Duke of Hamilton | |
|---|---|
| Portrait by Sir Anthony van Dyck, 1640 | |
| Master of the Horse | |
| In office 1628–1644 | |
| Monarch | Charles I | 
| Preceded by | The Earl of Holland | 
| Succeeded by | Prince Rupert of the Rhine | 
| Personal details | |
| Born | 19 June 1606 Hamilton Palace, Lanarkshire, Scotland | 
| Died | 9 March 1649 (aged 42) Old Palace Yard, Palace of Westminster, London, England | 
| Spouse | Margaret Feilding, Duchess of Hamilton | 
| Children | Anne Hamilton, 3rd Duchess of Hamilton Susannah Kennedy, Countess of Cassillis Four children who died in infancy | 
| Parent(s) | James, 2nd Marquess of Hamilton Lady Ann Cunningham | 
James Hamilton, 1st Duke of Hamilton (19 June 1606 – 9 March 1649), known as the 3rd Marquess of Hamilton from March 1625 until April 1643, was a Scottish nobleman and influential political and military leader during the Thirty Years' War and the Wars of the Three Kingdoms.