Abstract: Most of the present knot tying devices require the mechanical or manual sliding of the leader or line from some object such as a nail or tube onto a leader or line. This invention does not require such a transfer. The Fisherman's Knot Tier in accordance with the present invention looks and works similar to a retractable ballpoint pen with an alligator clip or modified alligator clip/cutter attached. When a line is placed in the exposed slot in the shaft, and the shaft is retracted into the tip, cone or insert, the line is secured. The jaws of the alligator clip or modified alligator clip/cutter holds the hook or similar article during the knot tying operation. The cutter portion of the clip/cutter is used to trim excess leader or line from the hook or similar article after the knot tying process is complete. The jaws of the alligator clip or modified alligator clip/cutter also doubles as a clip to hold the knot tier in a shirt or vest pocket.