An image forming apparatus includes an image forming unit, an image reading unit disposed above the image forming unit, a sheet discharge space disposed between the image reading unit and the image forming unit, a sheet discharge unit to discharge the sheet into the sheet discharge space from a back side to the front side, an operation unit disposed on the front side and including a display and an instruction input portion, and a document feeder disposed above the image reading unit. The image reading unit includes a document table, a document reverse unit to reverse and transport the original document, and a document discharge portion disposed beneath the document table, to which the original document is discharged. On the front side, the operation unit screens the document reverse unit while exposing both the document table and the document discharge portion of the document feeder from the front side.