An in-wheel motor in which a torque will not be applied excessively to a rotor and a wheel, and in which an axial length is reduced. In the in-wheel motor, a rotor is arranged around the stator, and torque is transmitted between a drive member rotated integrally with the rotor and a driven member rotated integrally with a wheel through a transmission member. The transmission member is adapted to allow the drive member and the driven member to rotate relatively to each other when an extraordinary torque is applied to the drive member or the driven member, thereby restricting the torque transmitted between the drive member and the driven member to a predetermined magnitude.