This two-dimensional driving ultrasonic motor comprises a first electro-mechanical energy converting device consisting of an ultrasonic vibrator having a unidirectional polarizing process applied to the entire surface; a second electro-mechanical energy converting device consisting of an ultrasonic vibrator laminated on this first electro-mechanical energy converting device and having a reversely directed polarizing process applied with a central line segment serving as a boundary between the oppositely polarized areas; a third electro-mechanical energy converting device consisting of an ultrasonic vibrator laminated on the first and second electro-mechanical energy converting devices and having a reversely directed polarizing process applied with a line segment serving as a boundary between the oppositely polarized areas, the second and third devices being aligned so that the line segments intersect at right angles; a friction member fixed to the lamination end of the laminated electro-mechanical energy converting devices; and a driven member pressed against this friction member under a predetermined pressure.