An image forming apparatus according to an aspect of the present disclosure includes a drum unit, a developing unit, a pressing unit, and a projection portion. Drum unit includes photosensitive drum. Developing unit includes a developing roller that develops a toner image on the photosensitive drum. Each of drum unit and developing unit is configured to be extractable from an apparatus body. Pressing unit is configured to make developing unit movable between a pressing position at which developing roller is pressed against photosensitive drum and a pressing-releasing position at which developing roller is separated from photosensitive drum so as to release the pressing. Projection portion is provided integrally with developing unit and configured to be projected to an extraction path of drum unit when developing unit is located at pressing position and to retract from extraction path of drum unit when developing unit is located at the pressing-releasing position.