Robert Shirley, 6th Earl Ferrers (20 July 1723 – 18 April 1787) was a British nobleman.
He was born in 1723 in St James, Westminster, the third son of Hon. Laurence Shirley.
On 26 December 1754, he married Catherine Cotton (d. 26 March 1786), by whom he had three children:
In 1778, he succeeded his brother, Vice-Admiral Ferrers, in the earldom. On 4 July 1781, he was created a deputy lieutenant of Derbyshire. He died in his house in London in 1787 and was buried with his wife at Breedon on the Hill.