Henry Grey, 1st Duke of Kent, KG, PC (1671 – 5 June 1740) was a British politician and courtier.

Though the house he built at Wrest Park in Bedfordshire has gone, parts of his very grand garden have survived relatively untouched.

He was the grandfather, through his daughter Anne Grey, of Henry Cavendish, the preeminent English chemist and physicist of the late 18th century.

In 1719, Grey was one of the main subscribers in the eighteenth-century Royal Academy of Music, a corporation that produced baroque opera on stage.

At the age of 68, a year before his death, he took part, as a founding governor, in the creation of Britain's first home for abandoned children, London's Foundling Hospital.