To provide a diamagnetic motor 1 capable of generating a torque using a magnetic repulsive force of a diamagnetic sheet member 6, and reinforcing the generated torque.

In a rotor 3 of a diamagnetic motor 1, plural diamagnetic sheet members 6 held by a non-magnetic outer cylindrical member 7 are arranged at equal intervals in a circumferential direction, and a nonmagnetic part formed by the outer cylindrical member 7 is arranged between the adjacent diamagnetic sheet members 6. Also, the width of the diamagnetic sheet member 6 in the circumferential direction is made larger than the width of the non-magnetic part in the circumferential direction. The diamagnetic sheet member 6 is formed of a graphite sheet having film thickness of about several tenths mm, and arranged in a form of a plane orthogonal to a radial direction of the rotor 3. An opposite distance between the diamagnetic sheet member 6 and a magnetic pole of a stator 2 is set smaller at both circumferential ends than at a circumferential center of the diamagnetic sheet member 6.