A representative configuration of a cleaning device and an image forming apparatus according to the present invention includes: a photosensitive drum which bears a toner image; a cleaning blade which abuts against the photosensitive drum and removes a toner remained in the photosensitive drum; a compression coil spring which is compressed to pressurize the cleaning blade against the photosensitive drum; and a positioning boss which is arranged to face the compression coil spring, with a predetermined gap being provided therebetween, allows a movement in a direction perpendicular to a compression direction of the compression coil spring, and regulates a movement of the compression coil spring such that the compression coil spring is not moved by more than a predetermined amount in the direction perpendicular to the compression direction of the compression coil spring.