A camera module advantageous in simplifying an assembly process is provided. A camera module 22 includes a barrel unit 66 having a housing space S; a lens holding unit 68 which holds an imaging optical system 34, which is housed in the housing space S, and which is supported such that the lens holding unit 68 is movable along an optical axis of the imaging optical system 34; an image pickup element 29 which is disposed in the barrel unit 66 and which picks up an object image guided by the imaging optical system 34; and a driving unit 72 which moves the lens holding unit 68 along the optical axis of the imaging optical system 34. The barrel unit 66 includes an inner barrel 80 in which the housing space S is formed and an outer barrel 78 disposed outside the inner barrel 80. A retaining plate 86 includes a front plate portion 86A and two side plate portions 86B. The retaining plate 86 clamps the inner barrel 80 and the outer barrel 78 in the optical axis direction in the state in which the front plate portion 86A retains a front end of the outer barrel 78 and distal ends of the two side plate portions 86B retain the rear end-face wall 8002.
