Earl of Ilchester is a title in the Peerage of Great Britain. It was created in 1756 for Stephen Fox, 1st Baron Ilchester, who had previously represented Shaftesbury in Parliament. He had already been created Baron Ilchester, of Ilchester in the County of Somerset in 1741, and Baron Ilchester and Stavordale, of Redlynch, in the County of Somerset, in 1747. These titles were also in the Peerage of Great Britain. All three peerages were created with remainder, failing heirs male of his own, to his younger brother Henry Fox, who was himself created Baron Holland in 1763. The brothers were the only sons from the second marriage of the politician Sir Stephen Fox.