The present invention provides a synchronous reluctance motor that is capable of achieving high output torque and low torque ripple simultaneously. The present invention is provided with: an annular stator core 9; an S-number of slots 14 that are arrayed at equal intervals along the inner circumferential surface of the stator core 9; winding wires housed the slots 14; and a rotor core 11 that has a cylindrical shape, that has P-number of magnetic poles, that is disposed on the inner surface side of the stator core 9, that is provided with a plurality of slits 15 formed of openings in the shape of circular convex arcs, at the respective magnetic poles, toward the center of the cylinder and having respective peaks located on the q-axis, wherein an angle θ, formed at the center of the cylinder between two adjacent slits 15 at center points of portions of the opening along the outer circumferential surface of the cylinder, is constant between each pair of adjacent slits 15, the angle θ falls within the range of 360°/2Sθ360°/1.15S, and an angle formed at the center of the cylinder by the d-axis and the center point of the slit 15 located closest to the d-axis is θ/2.
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