In a door panel integrated door stopper with a door lock housing integrated operating mechanism, comprising a door stopper bolt, a spring biasing the door stopper bolt downwardly, a pull member connected to the door stopper bolt for actuating the door stopper bolt, the operating mechanism is disposed in the door lock housing and includes an operating member movable between door stopper engagement and release positions, the operating member extends out of the lock housing through a rear wall opening thereof so that no operating structure is disposed at the side walls of the lock housing.