To provide a game medal and a medal discrimination device that enable reliable discrimination between a prescribed game medal and game medals other than that.

On a surface of a game medal M that is thrown into a game machine to play a game, identification information that is expressed by unevenness for identification as to whether it is a prescribed game medal M or not is attached. A luminescent material for exciting and emitting light by receiving light of a prescribed wavelength is injected into recessed parts 2 constituting the identification information. A medal discrimination device for discriminating the prescribed game medal M from game medals M other than that comprises: exciting light emission means 61 for emitting exciting light to the surface of the game medal M; photographing means 60 for photographing a surface image of the game medal M exposed to the exciting light; determination means for determining whether or not regular identification information is attached, on the basis of the image; and discrimination and rejection means for rejecting the game medal M that is determined to have no regular identification information.