An image forming apparatus includes an image forming unit, a casing, a cover member having an opening and supported by the casing, a first lock member configured to move between a first lock position in which the cover member is locked in an closed position and a first release position in which a locked state of the cover member is released, a tray configured to pivot between a first position covering the opening and a second position uncovering the opening, and a second lock member configured to move between a second lock position in which the tray is locked in the first position and a second release position in which a locked state of the tray is released, the second lock member being configured to move to the second lock position in response to movement of the first lock member to the first release position.