An image forming apparatus, comprising: a housing; an image formation unit configured to form an image on a recording medium; a stacking tray configured such that the recording medium on which an image has been formed by the image formation unit is stacked; a discharge unit configured to discharge, to the stacking tray, the recording medium on which an image has been formed by the image formation unit; and a reading device comprising a reading unit configured to read out an image formed on a document and a reversing unit configured to reverse a conveying direction of the document, and wherein the reading device is disposed on a lower side in a vertical direction with respect to the stacking tray and on a downstream side in a discharging direction of the recording medium discharged from the discharge unit with respect to the discharge unit.