An image forming apparatus includes a fixing device, a discharge roller pair, a detection portion, and a discharge control unit. The discharge roller pair discharges a sheet on which a toner image has been fixed in the fixing device to a discharge tray via a discharge port. The detection portion detects a rear end of the sheet being conveyed from the fixing device toward the discharge port. The discharge control unit performs control so that, within a prescribed period from a point in time of detection of the rear end of the sheet by the detection portion to when the rear end of the sheet passes through the discharge roller pair, a discharge speed of the sheet is reduced to a value lower than a reference speed, and after a lapse of the prescribed period, the discharge speed is increased back to the reference speed.