This disclosure discloses a rotating electric machine including a rotor and a stator. The rotating electric machine includes a stator core including a teeth part, and an air core coil. The air core coil is fitted to the teeth part. The air core coil includes curved end surfaces configured to approximately define a part of cylindrical shape at inner radial side and outer radial side. The air core coil includes approximately flat end surfaces at both circumferential sides and both axial sides.