Earl of Shaftesbury is a title in the Peerage of England. It was created in 1672 for Anthony Ashley-Cooper, 1st Baron Ashley, a prominent politician in the Cabal then dominating the policies of King Charles II. He had already succeeded his father as second Baronet of Rockbourne in 1631 and been created Baron Ashley, of Wimborne St Giles in the County of Dorset, in 1661, and he was made Baron Cooper, of Paulett in the County of Somerset, at the same time he was given the earldom.

Anthony Ashley Cooper, 1st Earl of Shaftesbury PC, FRS, was an English statesman and peer. He held senior political office under both the Commonwealth of England and Charles II, serving as Chancellor of the Exchequer from 1661 to 1672 and Lord Chancellor from 1672 to 1673. During the Exclusion Crisis, Shaftesbury headed the movement to bar the Catholic heir, James II, from the royal succession, which is often seen as the origin of the Whig party. He was also a patron of the political philosopher John Locke, with whom Shaftesbury collaborated with in writing the Fundamental Constitutions of Carolina in 1669.