The present disclosure provides an image forming apparatus capable of preventing members from colliding from each other upon an openable member being closed. An openable member opened and closed with respect to the apparatus body is locked in a closed state by a lock portion located at a lock position, and permitted to open upon the lock portion being moved to a release position. The apparatus body is provided with a movable portion that is moved to a first position if the openable member is opened and to a second position if the openable member is closed. The movable portion includes a block portion that is configured to block a movement of the lock portion from the release position to the lock position if the movable portion is located at the first position.