A molded, single-piece releasing tool comprises a body having a straight, narrow passage therethrough, a wedge and a hook respectively extending from one end thereof on opposite sides of the passage, and a handle extending from the other end thereof; the tool is used with an assembled one-piece cable tie in which one end of a strap is disposed through an opening in a frame at the other end thereof and is engaged with a toothed pawl pivotally mounted in the opening, the tool being operative to receive the strap in the passage with the hook engaging the frame and the wedge disposed in the opening between the strap and the pawl for disengagement thereof.