An adjustable clip for gripping a tarp or the like. There are first and second jaw portions having first ends that are joined by a hinge and second ends that are spread apart to form a receiving area. A finger-operated screw or threaded knob is mounted to the jaw portions at a location between the first and second ends, so that the jaw portions are urged together in response to tightening of the screw or knob. The hinge may be a live hinge for resiliently biasing the jaw portions apart, and the jaw portions and live hinge may be formed as a unitarily molded structure. An attachment portion extends from the hinge and has at least one opening for receiving a rope or other cord therein. The jaw portions are provided with surface contouring for securely gripping the sheet material of the tarp while minimizing damage thereto. The grip force of the assembly can be adjusted by tightening or loosening the threaded knob or screw as desired.