Sir Arthur William Hill KCMG FRS FLS (11 October 1875, in Watford – 3 November 1941, in Richmond) was Director of the Royal Botanic Gardens, Kew, and a noted botanist and taxonomist. The only son of Daniel Hill, he attended Marlborough College where his interest in natural history was encouraged by the classical master and entomologist, Edward Meyrick. Hill went on to King's College, Cambridge, where he came under the influence of Marshall Ward and Walter Gardiner, acquiring an MA and DSc. Hill never married and died on 3 November 1941 in a riding accident.