A rotor includes a rotor core. The rotor core has an outer shape including a first arc portion provided so as to intersect a d-axis, a straight line portion provided so as to intersect a q-axis, and a curved portion that connects the first arc portion and the straight line portion. The first arc portion has an arc shape centered on an axial center of the rotor core. The curved portion includes an arc-shaped second arc portion that bulges outward in a radial direction of the rotor core. The radius of curvature of the second arc portion being smaller than a radius of curvature of the first arc portion.