A developing device including: a developer carrying member that is rotatably supported and carries a developer; and a layer thickness regulating member that extends in an axial direction of the developer carrying member and is provided with a pressing part that is in pressure contact with a surface of the developer carrying member to form a thin layer of the developer on the surface of the developer carrying member. The pressing part includes a center portion and two end portions. The center portion of the pressing part is formed of a first elastic material. The end portions of the pressing part are formed of a second elastic material that is different from the first elastic material.