Abstract: A golf putter is disclosed for putting a golf ball into the putting cup, wherein the golf putter has a putter shaft, a putter head secured to the putter shaft, a mirror attached on the putter head and a guideline for aligning the putter head to a golf ball. The reflective surface is positioned such that an image of the golf ball is reflected up substantially along the putter shaft for aligning the image with an image of the guideline during at least a part of a swing of the golf putter in order to align the center of the putter head to the center of the golf ball and to align the putter head perpendicularly to the desired ball path.