Sir Denis Le Marchant, 1st Baronet (3 July 1795 – 30 October 1874) was a British barrister, civil servant, writer and Whig politician.
His father was killed at the Battle of Salamanca in 1812,[1] while his elder brother Carey also died in the Peninsular War.
He was educated at High Wycombe Royal Grammar School,[2] Eton and Trinity College, Cambridge,[3] and was called to the Bar, Lincoln's Inn, in 1823.
He retired from Parliament the same year but remained Under-Secretary of State for the Home Department until May 1848, when he returned as secretary to the Board of Trade.
Le Marchant died at his London home, 21 Belgrave Place, in October 1874, aged 79, and was succeeded in the baronetcy by his son, Henry.