Edward Henry Stanley, 15th Earl of Derby, was a British statesman. He served as Secretary of State for Foreign Affairs twice, from 1866 to 1868 and from 1874 to 1878, and also twice as Colonial Secretary in 1858 and from 1882 to 1885.

Earl of Derby is a title in the Peerage of England. The title was first adopted by Robert de Ferrers, 1st Earl of Derby, under a creation of 1139. It continued with the Ferrers family until the 6th Earl forfeited his property toward the end of the reign of Henry III and died in 1279. Most of the Ferrers property and the Derby title were then held by the family of Henry III. The title merged in the Crown upon Henry IV's accession to the throne in 1399.