An image forming apparatus includes an input portion into which a job is to be input, an image forming portion configured to form a toner image on a recording material to execute the job input into the input portion, a fixing portion configured to fix, on the recording material, the toner image formed by the image forming portion, the fixing portion being capable of being replaced with another fixing portion depending on a content of the job, a selecting portion configured to prompt an operator to select one of a plurality of modes before a plurality of jobs are successively reserved, and a controller configured to control the execution order of reserved jobs. The controller can change the execution order of the plurality of jobs so as to decrease the number of times of replacement of the fixing portion, or the controller can maintain the execution order of the plurality of jobs in a reserved order.