A pneumatic tire for a motorcycle that secures durability while improving grip performance in turning. A pneumatic tire for a motorcycle including a belt containing a belt layer formed by coating a plurality of cords with rubber in a tire tread, wherein the tread is provided with cushion rubbers separated from each other in the tire widthwise direction in both sides of the tire equatorial plane by a separated region and located outward in the tire radial direction from the belt, and a base rubber having a modulus higher than those of the cushion rubbers located in the separated region or outward in the tire radial direction therefrom, and Wn, a length of the separated region, and Wb, a length of the base rubber in the cross section in the tire widthwise direction, satisfy the relation: Wn≤Wb.