John O'Reilly 1906- is the author of The Glob.
John O'Reilly 1940- is a musician and the author of Accent on Achievement.
John O'Reilly, the author of Recharge Your Design Batteries, is an English editor and writer of visual trend reports.
John O'Reilly 1930- is the author of Assemblies of Magic.
John O'Reilly 1925- is the author of Pursuit of the king.
John O'Reilly 1939-, Irish professional golf caddy, is the author of The life of O'Reilly.
John Patrick O'Reilly is the author of 156 Parachute Battalion from Delhi to Arnhem.