A golf ball is provided to improve the flying distance and correctness of the golf ball by forming a hole whose cross section is smaller in the center of the hole than in one side or the other side of the golf ball. A hole(14) is formed to penetrate from the surface of one side(12) of the golf ball to the surface of the other side(13) of the golf ball(10). The cross section of the hole is smaller in the center of the hole than in one side or the other side of the golf ball. The shape of the cross section of the hole is a circle. The cross section of the hole becomes smaller as it goes from the surface of one side or the surface of the other side to the center portion of the golf ball. The air flows in from the surface of one side(12) of the golf ball to the surface of the other side(13) of the golf ball(10).
