Provided is a camera module that includes: an image sensing device; a first signal transmitting element on which there are formed a device coupling portion that is coupled to the image sensing device, and an external coupling portion that extends from one end of the device coupling portion to protrude from the image sensing device and is coupled to an external substrate; an auto-focus (AF) module including: an AF device, and a second signal transmitting element coupled to the first signal transmitting element to electrically connect the AF device and the external substrate; a lens module including a plurality of lens which focuses light onto the image sensing device; and a coupling element that couples the first and second signal transmitting elements so that they are electrically connected.