Arthur Bertram Chandler (28 March 1912 - 6 June 1984) was a British-Australian science fiction author, writing under his own name and the pseudonyms George Whitley, George Whitely, Andrew Dunstan, and S.H.M. He wrote over 40 novels and 200 works of short fiction and won the Ditmar Awards for the short story “The Bitter Pill” (in 1971) and for three novels: “False Fatherland” (in 1969), “The Bitter Pill” (in 1975), and “The Big Black Mark” (in 1976).