William Ashby may refer to: William Ashby (cricketer) (1786–1847), English cricketer W. Ross Ashby (1903–1972), English psychiatrist and cyberneticist William Ashby (died 1543), MP for Leicestershire William Ashby (died 1593), MP for Chichester and Grantham, and ambassador in Scotland William Ashby, character in The Witch of Blackbird Pond Bill Ashby, coach at Maine Sting William Joseph Ashby (1885–1953), Irish rugby union player