Abstract: A combination golf ball gauge and divot repair device is disclosed. The device includes a gauge portion and a divot tool portion. The gauge portion of the device may be used to assist a golfer in determining whether a golf ball has become out of round and, thereby, unsuitable for play. The divot tool portion may be used to repair divots left by golf balls on putting greens, in accordance with golf etiquette. The combination of the golf ball gauge portion and divot tool portion may provide for a convenient all-in-one tool for golfers.