An image forming apparatus is provided with a user authentication portion performing a user authentication process on a user by using user authentication information, a section authentication portion performing a section authentication process, by using one of a plurality of pieces of section authentication information, on the user who has been successfully authenticated by the user authentication portion, an associated information storage portion storing, therein, associated information in which the user authentication information is associated with the plurality of pieces of section authentication information, and a selection process portion selecting, after the user has been successfully authenticated by the user authentication portion, at least one of the plurality of pieces of section authentication information satisfying a preset condition from among the plurality of pieces of section authentication information associated with the user authentication information that has been used for the user authentication process.