An image forming apparatus includes an image bearing member rotatably supported in a body of the image forming apparatus, and bearing a developer image; a developing device including a developing container, a developing member, and a transporting member, the developing container containing a developer, the developing member disposed so as to oppose the image bearing member, the developing member having thereon the developer in the developing container and rotating to develop a latent image, the transporting member transporting the developer in the developing container while stirring the developer, the developing device being unremovably supported with respect to the body of the image forming apparatus; and a damping member disposed with respect to an axial direction of a rotational axis of the developing member so as to be situated at an end portion of the developing container in the axial direction, and restraining vibration of the developing container.