An image forming apparatus includes an image forming unit and a control unit. The image forming unit forms an image on a print medium. The control unit controls the image forming unit so as to divide an image larger than the print medium into pieces and to form the image pieces on a plurality of print media. The control unit forms an image formed on a different print medium in a margin where the image is not formed when the print medium contains the margin in case that the image forming unit divides the image into pieces and forms the image pieces on the plurality of print media.