Lady Dorothy Fanny Nevill (1 April 1826 in London – 24 March 1913 in London), was an English writer, hostess, horticulturist and plant collector. She was one of five children of Horatio Walpole, 3rd Earl of Orford and Mary Fawkener, daughter of William Augustus Fawkener, sometime envoy extraordinary at St Petersburg and close friend of Empress Catherine. She received no formal education, but was tutored by a governess in French, Greek, Italian and Latin. Lady Dorothy died at her home at 45 Charles Street on 24 March 1913, where a memorial plaque was unveiled on 8 September 1998.