Baron Rockley, of Lytchett Heath in the County of Dorset, is a title in the Peerage of the United Kingdom. It was created in 1934 for the Conservative politician Sir Evelyn Cecil, who had earlier represented Hertfordshire East, Aston Manor and Birmingham Aston in the House of Commons. He was the son of Lord Eustace Cecil, fourth son of James Gascoyne-Cecil, 2nd Marquess of Salisbury. As of 2013[update] the title is held by his great-grandson, the fourth Baron, who succeeded his father in December 2011. As a descendant of the second Marquess of Salisbury he is also in remainder to this peerage and its subsidiary titles, as well as to the barony of Burghley, a title held by his kinsman the Marquess of Exeter.
The heir apparent is the present holder's son Hon. William Evelyn Cecil (b. 1996).