An image forming apparatus includes an apparatus main body and a fixing device. The apparatus main body is formed such that its interior can be opened. The fixing device is provided in the interior of the apparatus main body and configured to fix a toner image on a medium to the medium by heating and pressing the toner image. The fixing device is supported by the apparatus main body in such a way as to pivot so as to be disposed on an outside of the apparatus main body in a state where the interior of the apparatus main body is opened.