Abstract: A fence stretcher for use in building fences that can be used by one person and is able to stretch fence wire under a constant tension. The fence stretcher has a winch assembly to which a tensioning cable is connected. A wire grabber is attached to the tensioning cable and is used to securely hold the fence wire. The winch assembly is used to stretch the fence wire such that the fence wire is tensioned, at which point a brake assembly is engaged. The brake assembly allows the fence wire to be fed to the user at the user's desired tension level. A mount assembly allows the present invention to be attached to a brace structure at the desired height for laying the fence. The fence stretcher is able to automatically feed any type of wire or cable across any type of terrain while following the contours of the terrain.