The present invention provides a method and device for marking golf balls that allows for the placement of a putting directional indicator (PDI) along the dynamic axis of a ball. While golfers could use the device to mark individual balls after they have been purchased (i.e. after they already have marks on them from the manufacturer), in preferred embodiments, the PDI is applied at the manufacturing stage and/or before the ball has other markings placed upon it. While the PDI could simply consist of one or more lines, in a preferred embodiment, the putting directional indicator may serve as an identifying mark for a manufacturer, distributor or consumer and may be designed to incorporate letters, words, symbols, short sentences, names, initials, numbers, images and photographs.