Abstract: A cable retainer for sided structures is an apparatus to secure and hold low-voltage and data-type cables to clapboards on the side of a residential or commercial structure. A clip type arrangement is used that slides between the boards where they overlap one another. The clip can be pushed in with a special tool or hammered in as well. The side of the clip is provided with plastic barbs which aid in retaining the invention. The bottom contains a “U”-shaped clip that holds smaller cables and another version of the invention has a slit which is used with a conventional cable-tie for retaining larger or multiple cables. Placed approximately every four feet, any type of cable is neatly held without sagging. If the cable is removed, the clip is supplied with a pre-scored mark that allows the bottom portion of the invention to be snapped off and removed while leaving the concealed upper portion in place.