Abstract: An installation structure for a camera includes a frame having an installation hole, and a bolt having a through hole therein. The bolt passes through the installation hole and fixed to the frame. A camera body is fixed to the frame through the bolt, and a cable of the camera passes through the hollow screw portion. The bolt may be integrally formed with the camera. Further, the camera may be fixed with the bolt via a variable angle installation member to adjust a viewing angle of the camera.