George William Frederick Osborne, 6th Duke of Leeds, KG, PC (21 July 1775 – 10 July 1838), styled Earl of Danby until 1789 and Marquess of Carmarthen from 1789 to 1799, was a British peer and politician.

Leeds was born in London, the eldest son of Francis Osborne, 5th Duke of Leeds, and his first wife, Amelia, Baroness Darcy de Knayth, daughter of Robert Darcy, 4th Earl of Holderness.

[1] Leeds was appointed Lord Lieutenant of the North Riding of Yorkshire in 1802, a post he held until his death.

He was sworn of the Privy Council in 1827[4] and made a Knight of the Garter the same month.

They had three children: The Duke of Leeds died in London in July 1838, aged 62, and was buried in the Osborne family chapel at All Hallows Church, Harthill, South Yorkshire.