Fenby is a surname. Notable people with the surname include:
Andy Fenby (born 1985), Welsh rugby union footballer Eric Fenby OBE (1906–1997), English composer and teacher, Frederick Delius's amanuensis from 1928 to 1934 Jonathan Fenby (born 1942), founding partner and managing director of the China team at Trusted Sources, London Joseph B. Fenby (1841–1903), inventor of the Electro-Magnetic Phonograph in 1863 Thomas Fenby (1875–1956), British Liberal politician and blacksmith
See also Ashby cum Fenby, village and civil parish in North East Lincolnshire, England Fanbyn