Abstract: A multipurpose hand tool for tying certain types of knots in fishing line includes an elongate finger which is tapered from a thick base toward a very small tip. The elongate finger has a rounded external shape, and a groove of decreasing depth extends along it from the base toward its tip, permitting an end of a line to be passed within turns of line wrapped around the elongate finger. The elongate finger includes two mating halves, each mounted on one of a pair of pivotably interconnected handles. Cavities are provided in the mating opposed faces of the mating halves of the elongate finger to hold the eye portion of a fishhook in order to tighten it by moving the two halves of the elongate finger toward one another. A line cutter included in the tool comprises a pair of opposed sharp edges located on the extreme side portion of each of the handles, permitting a line to be clipped close to a knot.