| Honorific-Prefix: | The Honourable |
| Egremont Lascelles | |
| Office: | Member of Parliament for Northallerton |
| Term Start: | 11 May 1866 |
| Term End: | 17 November 1868 |
| Predecessor: | Charles Mills |
| Successor: | John Hutton |
| Birth Date: | 26 July 1825 |
| Nationality: | British |
| Party: | Conservative |
| Parents: | Henry Lascelles Lady Louisa Thyme |
| Children: | Two |
Egremont William Lascelles (26 July 1825 – 27 October 1892) was a British Conservative Party politician.
Lascelles was the son of Henry Lascelles and Lady Louisa Thyme. In 1856, he married Jessie Elizabeth Malcolm — daughter of Neil Malcolm and Harriet Mary Clarke-Jervoise — and they had two children: Marion (died 1938) and Clare (–1883).[1] [2]
In 1847, Lascelles became a lieutenant captain in the Grenadier Guards[3] and in 1852, he became major of the 1st Regiment of West York Militia.[4] He was later also a Deputy Lieutenant.[1]
He was elected MP for Northallerton at a by-election in 1866 but did not seek to retain the seat at the next general election in 1868.[5]