An information processing system includes a setting unit and an identification information extracting unit. The setting unit obtains first identification information that is identification information of a user in an information system that performs first authentication, the identification information being input by the user for user authentication to an image forming apparatus connected to the information system, sends setting information including the first identification information to a print service system that performs second authentication, thereby establishing a logical printer in which the setting information is set in the service system, and sets, as identification information of a person who uses the logical printer, second identification information that is identification information of the user in the service system. The extracting unit receives, from the service system, print data to be printed by the image forming apparatus, and extracts and outputs the first identification information set in the received print data.