An information output system includes a user terminal that issues a print job containing print data, a management server that receives and stores the print job, and an information output unit that acquires print data from the management server and executes printout. The user terminal transmits a print job specifying a print reception user of a print data recipient. The management server includes a print job processing section that stores and manages the print job in association with a user identifier of the print reception user, and a user authentication section that receives the user image information and executes user authentication based on comparison processing between the received user image information and registered user image information stored in a user information database. Provided that the user is authenticated, the print job processing section acquires print job data with the authenticated user set as the print reception user and transmits the print job data.