Abstract: A rope-tying device is disclosed which facilitates convenient and efficient formation of a loop in the free end portion of a rope. Economical fabrication and efficient use of the device is facilitated by its configuration as a unitary, generally cylindrical tubular body formed from a single piece of material. The tubular defines a pair of diametrically opposed, longitudinally extending slots, with the body including a pair of annular end body portions, and a pair of diametrically opposed side body portions extending between the end body portions. For loop-formation, the free end portion of a rope is inserted through the device, and a half-loop displaced laterally through one of the slots. The free end of the rope is thereafter inserted through the half-loop, with tension exerted to complete loop-formation.