| Honorific Prefix: | The Right Honourable |
| The Lord Chesham | |
| Office: | Member of Parliament for Buckinghamshire |
| Term Start: | 1857 |
| Term End: | 1863 |
| Predecessor: | Caledon Du Pré Benjamin Disraeli Charles Compton Cavendish |
| Alongside: | Caledon Du Pré Benjamin Disraeli |
| Successor: | Caledon Du Pré Benjamin Disraeli Robert Bateson Harvey |
| Office1: | Member of Parliament for Peterborough |
| Term Start1: | 1847 |
| Term End1: | 1852 |
| Predecessor1: | George Wentworth-FitzWilliam John Nicholas Fazakerley |
| Alongside1: | George Wentworth-FitzWilliam |
| Successor1: | George Wentworth-FitzWilliam Richard Watson |
| Birth Name: | William George Cavendish |
| Birth Date: | 29 October 1815 |
| Death Place: | Latimer, Buckinghamshire |
| Education: | Eton College |
| Party: | Liberal |
| Parents: | Charles Compton Cavendish, 1st Baron Chesham Lady Catherine Susan Gordon |
| Children: | 5 |
| Relations: | George Gordon, 9th Marquess of Huntly (grandfather) |
William George Cavendish, 2nd Baron Chesham (29 October 1815 – 26 June 1882) was a British Liberal politician.
Chesham was born on 29 October 1815 into the Cavendish family, headed by the Duke of Devonshire.[1] He was the eldest son of Charles Compton Cavendish, 1st Baron Chesham and the former Lady Catherine Susan Gordon. He had two younger sisters, Hon. Susan Sophia Cavendish (wife of Thomas Trevor, 22nd Baron Dacre) and Hon. Harriet Elizabeth Cavendish (second wife of George Byng, 2nd Earl of Strafford).
His father was the fourth son of George Cavendish, 1st Earl of Burlington (himself the third son of former Prime Minister William Cavendish, 4th Duke of Devonshire) and Lady Elizabeth Compton (only child of Charles Compton, 7th Earl of Northampton). His maternal grandparents were George Gordon, 9th Marquess of Huntly and the former Catherine Cope (second daughter and co-heiress of Sir Charles Cope, 2nd Baronet).
He was educated at Eton College.[2]
From 1833 to 1840, Cavendish served as an Officer in the 10th Light Dragoons. His father commissioned the famous architect Edward Blore to build a new family home, known as Latimer House, which was completed in 1838.
In 1847, he was elected as a Liberal Member of Parliament for Peterborough, a seat he held until 1852, and later represented Buckinghamshire, serving alongside Benjamin Disraeli from 1857 to 1863,[3] when he succeeded his father in the barony and took his seat in the House of Lords.[4] His father, a Member of Parliament for nearly forty years, had been created Baron Chesham of Chesham on 15 January 1858.
In 1876, he served as president of the Royal Agricultural Society.[5]
On 24 July 1849, Lord Chesham married Henrietta Frances Lascelles (1830–1884) at Kensington Church in London. She was a daughter of Comptroller of the Household Right Hon. William Lascelles (third son of Henry Lascelles, 2nd Earl of Harewood) and his wife Lady Caroline Georgiana Howard (a daughter of George Howard, 6th Earl of Carlisle). Together, they were the parents of:
Lord Chesham died in June 1882, aged 66, at Latimer House, Latimer, Buckinghamshire. He was succeeded in the barony by his eldest son Charles. His widow died nearly two years later on 21 May 1884.[6]