Provided is a ball marker for golf, including: a round-shaped case having an opening; a disc spring fit to the round-shaped case; a thin film printed circuit board and a flexible printed circuit cable seated on a top surface of the disc spring, the thin film printed circuit board having a light-emitting diode flickering control chip, the flexible printed circuit cable being connected to the thin film printed circuit board and having a plurality of surface mounted device light emission diodes; a transparent rubber layer formed on the thin film printed circuit board and the flexible printed circuit cable; an electric cell received in a receiving portion of the disc spring exposed from a lower portion of the round-shaped case; a button switch and a button cover arranged on the electric cell; and a lower fixing portion fused and fixed with soft resin.