Robert Sidney, 4th Earl of Leicester

Robert Sidney, 4th Earl of Leicester (1649–1702) was the son of Philip Sidney, 3rd Earl of Leicester and the former Lady Catherine Cecil.

As a child, Robert Sidney and his sister Dorothy had their portrait painted by Sir Peter Lely. He is commemorated in St John the Baptist, Penshurst.

He succeeded his father to the earldom in 1698. He married Lady Elizabeth Egerton, and they had four sons:

Three of his sons succeeded their father in turn to the earldom. The youngest son, Jocelyn, was the last earl of this creation.