A three-dimensional motion input device in which an annular groove (10) is formed in the upper face of a case (4) of a motion commander (2), and a ring (14) for inputting three-dimensional motion and a track ball (16) are arranged in the groove. The trackball (16) inputs two-dimensional motion, and operation of the ring (14) inputs four-axis three-dimensional motion but does not input the two dimensional motion.
