Sir Nathaniel Joseph Highmore GBE KCB (13 November 1844 – 16 April 1924) was a senior British civil servant and government barrister. Highmore was born in Sherborne, Dorset, the son of MP, and was educated at Sherborne School. He joined the Inland Revenue at the age of twenty, was called to the Bar, and became Assistant Solicitor to the Inland Revenue in 1890. In 1903 he became Solicitor to HM Customs and in 1909 Solicitor to HM Excise. He retired in 1913.