A rotating electric machine having a rotor, a stator, and a coil including a coil conductor wound around teeth provided on at least one of the rotor and the stator, the rotating electric machine comprising: a coil holding member that is attached to the teeth and holds the coil; and a cooling medium supply section configured to supply a cooling medium to a coil housing space formed in each of slots formed between the teeth, characterized in that the coil holding member includes a base section around which the coil conductor is wound, and a spacer section that is protruded on an outer surface of the base section in such a posture that the long direction is along an extending direction of the base section and the width direction is along a normal direction of the outer surface of the base section, the spacer section extends along one of the slots formed between the teeth, is inserted between turns of the coil conductor, and is arranged alternately with the turns to separate the turns, a notched section is provided in a middle of an extension of the spacer section, the notched section being cut out of the spacer section in such a manner that a widthwise dimension of the spacer section along the width direction of the spacer section is shorter where the notched section is formed than where the notched section is not formed, the spacer section defines a gap between the turns, the gap including a wide portion (Gw) expanded by a total area of the notched section cut out of the spacer section, and when the cooling medium supply section supplies the cooling medium to the coil housing space, the coil conductor disposed in the coil housing space is directly cooled by the cooling medium and a portion of the cooling medium flows into the gap and is distributed in the gap, so that the contact area between the coil conductor and the cooling medium is sufficiently secured and the coil is effectively cooled. a coil holding member that is attached to the teeth and holds the coil; and a cooling medium supply section configured to supply a cooling medium to a coil housing space formed in each of slots formed between the teeth, characterized in that the coil holding member includes a base section around which the coil conductor is wound, and a spacer section that is protruded on an outer surface of the base section in such a posture that the long direction is along an extending direction of the base section and the width direction is along a normal direction of the outer surface of the base section, the spacer section extends along one of the slots formed between the teeth, is inserted between turns of the coil conductor, and is arranged alternately with the turns to separate the turns, a notched section is provided in a middle of an extension of the spacer section, the notched section being cut out of the spacer section in such a manner that a widthwise dimension of the spacer section along the width direction of the spacer section is shorter where the notched section is formed than where the notched section is not formed, the spacer section defines a gap between the turns, the gap including a wide portion (Gw) expanded by a total area of the notched section cut out of the spacer section, and when the cooling medium supply section supplies the cooling medium to the coil housing space, the coil conductor disposed in the coil housing space is directly cooled by the cooling medium and a portion of the cooling medium flows into the gap and is distributed in the gap, so that the contact area between the coil conductor and the cooling medium is sufficiently secured and the coil is effectively cooled.