Charles Augustus Bennet, 6th Earl of Tankerville PC (10 January 1810 – 18 December 1899), styled Lord Ossulston between 1822 and 1859, was an English peer and Conservative politician.

Bennet was born at Charles Street, Berkeley Square, London, the eldest son of Charles Bennet, 5th Earl of Tankerville and Armandine Corisande de Gramont, daughter of the 8th Duke of Gramont.

He held this seat until 1859,[3] when he was summoned to the House of Lords through a writ of acceleration in his father's barony of Ossulston.

[9] Lord Ossulton was a frequent visitor to Glen Feshie and Ardverikie in Badenoch for shooting and stalking.

They had five children: Lord Tankerville died at the family seat of Chillingham Castle, Northumberland, in December 1899, aged 89, and was succeeded by his second but only surviving son, George.