Abstract: A golf swing training device that is attachable to a golf club is described. The golf swing training device comprises a front surface and an opposite back surface. The front surface is a planar surface and allows a user to place a hand flush against the front surface. The back surface is coupled with at least one clip. The at least one clip protrudes from the back surface. The at least one clip comprises a flange portion and an arcuate portion. The arcuate portion is arranged to grip a golf club at a suitable position of the golf club, thus attaching the golf swing training device to the golf club. The golf swing training device when attached to the golf club allows a user to maintain a proper swing orientation and produce a straight swing, thereby preventing slicing of a golf ball.