An automatic indexing dimpler includes a housing having an interior channel substantially centered along a longitudinal axis. A cam is slidably and rotatably disposed within the interior channel. The cam includes a first longitudinal groove, a second longitudinal groove and an angled groove adjoining the first longitudinal groove at a groove bottom end and the second longitudinal groove at a groove top end. Each longitudinal groove defines a discrete indexing position. A cam follower attached to the housing engages the first and second longitudinal grooves and the angled groove to operably rotate the cam about the longitudinal axis as the cam follower tracks along the angled groove from the groove bottom end to the groove top end. At least one dimple engagable with a workpiece and operable for forming a recessed region in the workpiece is operably connected to the cam for concurrent movement therewith.