Abstract: A golf putting training and practice aid for use by right or left handed golfers to improve their putting stance and stroke comprising a reflective sheet adapted for placement on the ground and provided with indicia to indicate eye position, shoulder position, and putter position and travel relative to the reflection of a golfer standing over the device. The indicia comprise a target line along the longitudinal center of the sheet, a center line perpendicular to and bisecting the target line, a pre-impact correction and length gauge along the target line to one side of the center line, a pair of putter head guide lines parallel to and on either side of the target line and shoulder guide lines between the putter head guide lines and the parallel edges of the sheet. Preferably, the device is made from a relatively thin sheet of transparent acrylic which measures 18.times.