John A. Hammond – (1910-1987), American record producer. John P. Hammond – (b. 1942), U.s. blues singer & guitar player. John Hammond - The fictional character within Jurassic Park. John Hays Hammond - (1855-1936), American mining engineer. John Hays Hammond, Jr. - (1888-1965), Son of above, American inventor holding over 400 patents, including the remote control.