To provide a dimpling apparatus which can be made compact as a whole apparatus.

The dimpling apparatus includes a ring-shaped member 31 having a ring hole 40 penetrating in the axial direction, and rotatable around the axis, a plurality of rotatable rollers which are arranged and held in the circumferential direction on an inner circumferential surface of the ring-shaped member 31, and a workpiece holding means for holding a workpiece so that the shaft-like workpiece is located in the ring hole 40 of the ring-shaped member 31. The ring-shaped member 31 is rotated around the axis to abut the plurality of rollers on an outer surface of the workpiece, consequently the outer surface of the workpiece is dimpled.