William Henry Lambton (1764–1797) was a British member of Parliament (MP) who represented the City of Durham in the House of Commons. He was the son of Major-General John Lambton, who preceded him as the MP for Durham, and the brother of Ralph John Lambton, who was also an MP for Durham. Lambton was educated at Wandsworth (1773–78), Eton College (1778-82) and Trinity College, Cambridge in 1782. Lambton was a Freemason, and in 1788 was installed as the first Provincial Grand Master of Durham. The Durham cathedral organist, Thomas Ebdon, composed a march for the occasion.