Abstract: The present invention provides an improved putter and putter training device or aid that assists a golfer in improving their putting stroke. In one embodiment of the invention a putter is provided featuring a putter head having a front surface and a rear surface, and at least one guide displaceable relative to the front surface from a first position wherein the guide extends forward of the front surface to a second position wherein the front surface of the putter head is unobstructed by the guide. In one embodiment the guide is displaceable through a bore provided in the putter head. In a further embodiment of the invention the guide is rotatably displaceable in relation to the putter head. In another embodiment of the invention, a putter incorporating features of the invention is illustrated, the putter comprising a putter head having a front surface and a rear surface, two guides extending from the front surface, and two guides extending from the rear surface.