A resolver stator comprising: a stator core including a yoke having an annular shape, and a plurality of teeth projecting inward in a radial direction from the yoke; an insulator that covers an inner peripheral surface of the yoke; a plurality of coils to be wound around the plurality of teeth, respectively; a connecting wire that electrically connects the plurality of coils to each other; and a guide hook that guides the connecting wire, wherein the plurality of coils include a first coil and a second coil, the first coil and the second coil being adjacent to each other in a circumferential direction, at least a part of the connecting wire extends from the tooth corresponding to the first coil toward the tooth corresponding to the second coil and is hooked to the guide hook so as to be curved in a convex shape projecting outward in the radial direction, the insulator includes: a first inner surface that is located radially outside of the first coil in the radial direction and faces the first coil in the radial direction; a second inner surface that is located radially outside of the second coil in the radial direction and faces the second coil in the radial direction; and characterized in that the insulator comprises a recess that is recessed outward in the radial direction relative to a first virtual plane and a second virtual plane, the first virtual plane and the second virtual plane being defined by virtually extending the first inner surface and the second inner surface until the virtually extended first inner surface and the virtually extended second inner surface intersect with each other, the first virtual plane virtually extending from the first inner surface, the second virtual plane virtually extending from the second inner surface, and the guide hook is disposed at the recess and projects inward in the radial direction from an inside surface of the recess. a stator core including a yoke having an annular shape, and a plurality of teeth projecting inward in a radial direction from the yoke; an insulator that covers an inner peripheral surface of the yoke; a plurality of coils to be wound around the plurality of teeth, respectively; a connecting wire that electrically connects the plurality of coils to each other; and a guide hook that guides the connecting wire, wherein the plurality of coils include a first coil and a second coil, the first coil and the second coil being adjacent to each other in a circumferential direction, at least a part of the connecting wire extends from the tooth corresponding to the first coil toward the tooth corresponding to the second coil and is hooked to the guide hook so as to be curved in a convex shape projecting outward in the radial direction, the insulator includes: a first inner surface that is located radially outside of the first coil in the radial direction and faces the first coil in the radial direction; a second inner surface that is located radially outside of the second coil in the radial direction and faces the second coil in the radial direction; and characterized in that the insulator comprises a recess that is recessed outward in the radial direction relative to a first virtual plane and a second virtual plane, the first virtual plane and the second virtual plane being defined by virtually extending the first inner surface and the second inner surface until the virtually extended first inner surface and the virtually extended second inner surface intersect with each other, the first virtual plane virtually extending from the first inner surface, the second virtual plane virtually extending from the second inner surface, and the guide hook is disposed at the recess and projects inward in the radial direction from an inside surface of the recess. a first inner surface that is located radially outside of the first coil in the radial direction and faces the first coil in the radial direction; a second inner surface that is located radially outside of the second coil in the radial direction and faces the second coil in the radial direction; and characterized in that the insulator comprises a recess that is recessed outward in the radial direction relative to a first virtual plane and a second virtual plane, the first virtual plane and the second virtual plane being defined by virtually extending the first inner surface and the second inner surface until the virtually extended first inner surface and the virtually extended second inner surface intersect with each other, the first virtual plane virtually extending from the first inner surface, the second virtual plane virtually extending from the second inner surface, and the guide hook is disposed at the recess and projects inward in the radial direction from an inside surface of the recess.