Abstract: A putter alignment device by which a golfer may develop and improve putting skills so that such skills may be utilized when golfing. The putter alignment device includes a reflective surface accurately positioned in relation to and mounted on a golf putter head with the reflective surface being oriented in a specific angular relation to the putter head and provided with horizontal and vertical lines thereon to enable a golfer to utilize a maximum length visual sighting line between the lines on the reflective surface and the golf ball. The alignment device includes a mounting device attached to the putter head, a bracket affixed to the mounting device and a reflective mirror attached to the bracket and secured in a slot-like structure by a cam device which also enables an adjustment range of approximately 6.degree. of the reflective mirror inclination to compensate for various loft angles found on various commercially available putters.